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Bglad420
01-24-2007, 06:44 PM
Well like the title says I' will begining my obd-1 conversion shortly as soon as my harness's arrive, aswell as my SAFC-2. I am using a dizzy from a 90-91 Accord, which I will be switching to external coil, and I am using a P75 ecu.
I will update this thread as the project persues with pics.

bobafett
01-24-2007, 07:17 PM
well i will be checking back frequently! good luck on your conversion!

Bglad420
01-24-2007, 07:21 PM
Thanks I'll probally need it!!

mkymonkey
01-24-2007, 07:21 PM
hmm....im just posting so i can get updates...im interested in this :D

MessyHonda
01-24-2007, 07:29 PM
lets hope this one starts for real.....it would be great to have tuning ablities

EricW
01-24-2007, 07:50 PM
Good luck, hit me up if you need any help with wiring. I have all of the wiring for the 86-87 accords written down and stuck in one of my Honda manuals around here somewhere. The 88-89 shouldn't be that different.

Bglad420
01-24-2007, 08:09 PM
lets hope this one starts for real.....it would be great to have tuning ablities


Oh this one is for real, I took this pic of my new dizzy and ecu about five minutes ago.


http://i38.photobucket.com/albums/e107/BrentBus/2007_0124obd0001.jpg

reanimator420
01-24-2007, 08:12 PM
is that the ebay ecu?

Bglad420
01-24-2007, 08:14 PM
Yep turns out its not a bomb

MessyHonda
01-24-2007, 08:15 PM
damn looks hot....i always wanted to connect one of my laptop to my car...ever since i saw it on fast and the furious but yeah....kinda rice now that i think about it now...lol

hotdoghogie
01-24-2007, 08:17 PM
hmm cant u buy harnesse for these?... or do u have to chop stuff up?

reanimator420
01-24-2007, 08:17 PM
i know where to get me one now. ill keep watching this thread

MessyHonda
01-24-2007, 08:22 PM
i know where to get me one now. ill keep watching this thread


i believe you need fuel injection first.

Bglad420
01-24-2007, 08:24 PM
hmm cant u buy harnesse for these?... or do u have to chop stuff up?


Yes you can heres the link.


http://www.xenocron.com/products.php?page=convharness
OBD0 > OBD1 Harness: $104
Dizzy Adapter Harness: $50

Bglad420
01-24-2007, 08:25 PM
i believe you need fuel injection first.


Should just buy my fuel injection stuff, I'm throwing a b18 mani on mine and I wont need it anymore.

hotdoghogie
01-24-2007, 08:25 PM
u shure that will work with our car too?

Bglad420
01-24-2007, 08:27 PM
Yeah its the one that everyone else uses.

hotdoghogie
01-24-2007, 08:35 PM
o sweet... so what all is possible with obd1?... can u get them chipped so u gaine more power?

Bglad420
01-24-2007, 08:39 PM
Anything is possible with obd-1, the one I bought is allready chipped, but Ill probally have to chip it again for my turbo setup

hotdoghogie
01-24-2007, 08:41 PM
o kewl... hmmm... so how much did u pay for your obd1 base?

Bglad420
01-24-2007, 08:45 PM
90 for the oem dizzy, and 180 for the P75 ecu. thats with shipping

hotdoghogie
01-24-2007, 08:46 PM
man i gots lotz to learn... thnx man

MessyHonda
01-24-2007, 09:10 PM
dont you need an adapter plate for the dizzy to the head?

teck
01-24-2007, 09:23 PM
sexy sexy i still have much to learn about these cars

snoopyloopy
01-24-2007, 09:26 PM
does it really matter what year the dizzy is from? because i thought 90-91 were obd-0?

ZackieDarko
01-24-2007, 10:43 PM
nice


i will be doing this soon as well

MessyHonda
01-24-2007, 11:02 PM
i want some too...do you have any rough estimates on total cost?

ZackieDarko
01-25-2007, 03:14 AM
the OBD-1 people should get together and figure out an OBD-0 to OBD-1 kit and post it up so we can all enjoy the fun

/thread jack

shepherd79
01-25-2007, 06:10 AM
well, first you have to hack up the distributor to make it fit. that will be interesting.
second, even with convertion harness, you still have to do a lot of wirring. For starters you have to run new wires from distributor all the way to the ECU for crank sensor. harness should come with 4 wire O2 sensor wirring.
After that you have to wire up the gauge cluster for speed pulser sensor.
it is not as easy as you think it will be.

bobafett
01-25-2007, 08:33 AM
one thing to consider is that with most of the open tuning platforms you can choose to use a 1 wire or stock 4 wire, or even a true wideband o2 sensor, but really that is probably the least of one's worries.

IMO getting the dizzy mounted is scariest part.

MessyHonda
01-25-2007, 09:53 AM
well, first you have to hack up the distributor to make it fit. that will be interesting.
second, even with convertion harness, you still have to do a lot of wirring. For starters you have to run new wires from distributor all the way to the ECU for crank sensor. harness should come with 4 wire O2 sensor wirring.
After that you have to wire up the gauge cluster for speed pulser sensor.
it is not as easy as you think it will be.



we should contact painless wires and they want to build us a harness...lol

thegreatdane
01-25-2007, 12:04 PM
Yes you can heres the link.
http://www.xenocron.com/products.php?page=convharness
OBD0 > OBD1 Harness: $104
Dizzy Adapter Harness: $50

You will have to repin some of the wires if you buy that harness. Boomslang makes a harness specifically for our Accords, I dont think they list it but they make it.

Legend_master
01-25-2007, 02:26 PM
You will have to repin some of the wires if you buy that harness. Boomslang makes a harness specifically for our Accords, I dont think they list it but they make it.

I was going to say our obd-0 is different then all the other obd-0's . Rywire can make an entire engine, distributor, and ecu setup. He has all the wireing digrams and knowledge of the convertion. I know some people have had trouble with him, but he has been very good to all my projects.

thegreatdane
01-25-2007, 02:32 PM
I can personally vouch for boomslang as a solid product. I know rywire makes them too but as you said someone had troubles with it. It might just have been a glitch though.

shepherd79
01-25-2007, 03:23 PM
i a lot of people who make wirring harnesses for our cars, but most of them switch wirring for sensors from the distributor to ECU.

89T
01-25-2007, 04:41 PM
I' will begining my obd-1 conversion shortly as soon as my harness's arrive, aswell as my SAFC-2.
did anyone else catch this?
what on god's green earth are you going to do with a safc-2?:huh:
the whole point of getting a chipped 0bd1 ecu is to directly tune the ecu via hondata, chrome, or neptune.
am i missing something?

damn looks hot....i always wanted to connect one of my laptop to my car...ever since i saw it on fast and the furious but yeah....kinda rice now that i think about it now...lol
it's cool as fuk to be able to see what you'r car is doing on the fuel map and datalogger but when you are rolling on a sat. night with the lap top sitting on the passenger side floor.eeh.... it feels kinda ghey..
but when the tunner is rollin with you! you feel like you'r the shit! lol.

Accordtheory
01-25-2007, 04:44 PM
Rywire can make an entire engine, distributor, and ecu setup. He has all the wireing digrams and knowledge of the convertion. I know some people have had trouble with him, but he has been very good to all my projects.

...cough...cough
Just do it yourself. Beats paying them and Then having to do it yourself, like I did..

plus that guy just reminds me of someone I used to know, and don't like. It's uncanny.

Anyway, good luck with the conversion. I wish someone had firmly told me obd1 is the unavoidable first step in modifying my car years ago. It would have saved me a lot of headaches.

Legend_master
01-25-2007, 05:02 PM
...cough...cough
Just do it yourself. Beats paying them and Then having to do it yourself, like I did..
plus that guy just reminds me of someone I used to know, and don't like. It's uncanny.
Anyway, good luck with the conversion. I wish someone had firmly told me obd1 is the unavoidable first step in modifying my car years ago. It would have saved me a lot of headaches.


:lol: I didnt know if you wanted me to acknowledge you as the one with the problem.

Bglad420
01-25-2007, 05:13 PM
Reply to 89 turbo'ed, I'm going to be turboing the car, and I assumed it would come in handy. I just purchased an AEM UEGO wideband air/fuel as well so that's another peice of my puzzle.

Bglad420
01-25-2007, 05:14 PM
...cough...cough
Just do it yourself. Beats paying them and Then having to do it yourself, like I did..
plus that guy just reminds me of someone I used to know, and don't like. It's uncanny.
Anyway, good luck with the conversion. I wish someone had firmly told me obd1 is the unavoidable first step in modifying my car years ago. It would have saved me a lot of headaches.


Deal with that kind of headache! No thanks, Id rather just buy one thats done and just deal with a few wires as opposed to 100...

89T
01-25-2007, 05:35 PM
did anyone else catch this?
what on god's green earth are you going to do with a safc-2?:huh:
the whole point of getting a chipped 0bd1 ecu is to directly tune the ecu via hondata, chrome, or neptune.
am i missing something? :dunno: :sadwave:

Bglad420
01-25-2007, 05:38 PM
OK so what you're saying is not to get the AFC, what will I need to run that other stuff?? Will I need to use my computer to tune??

Legend_master
01-25-2007, 06:03 PM
OK so what you're saying is not to get the AFC, what will I need to run that other stuff?? Will I need to use my computer to tune??


You could run hondata and tune specifically for your application, they even have a system specifically for turbo applications or you can get the regular s200 system. Also I am curiose about your first post, you say your going to be switching to an external coils, but we already ahve external coils. Why not just run an internal one :dunno: .

89T
01-25-2007, 06:09 PM
www.hrtuning.com/ here ya go!
http://www.hrtuning.com/rtpsoftware better yet!

Bglad420
01-25-2007, 06:14 PM
To legend masters Q, everybody says that they don't last, or else I would prefere to keep the internal, which I still might.

To 89 Turbo--Thanks!

Bglad420
01-25-2007, 06:18 PM
SO I would need to buy one of those boards??

Legend_master
01-25-2007, 06:28 PM
To legend masters Q, everybody says that they don't last, or else I would prefere to keep the internal, which I still might.
To 89 Turbo--Thanks!


What is your definition of last. The external coils go out to, but I cant say that they last longer then an internal coil. Plus I believe you have to get some sort of MSD box to run external coil on obd-1 (not 100% sure on this one, but you should look into it).

89T
01-25-2007, 07:00 PM
all he needs is a blaster coil, and a msd cap. or http://www.3geez.com/forum/showthread.php?p=721283#post721283 post #2

Bglad420
01-25-2007, 07:07 PM
I'm still kinda confused about what to use for my tuning.. I would need to buy that board, but which one?? What are my options for that other companys, do you have links for them?? Sorry to be so dumb about it but I have no idea really, I thought all I needed originally was the ecu, dizzy, harness's, and controll it with an AFC, but now that this new to me info has come up I would like to get what is best.




I should have a MOD change the title to My OBD-1 Conversion retarded questions.

89T
01-25-2007, 07:10 PM
SO I would need to buy one of those boards??
yea! for neptune.
same board just a bunch of diffrent pic's of it. witch ecu's are compatible? http://www.hrtuning.com/pages/category/compatibility/
alot of the pro's are running this now.

for chrome, handata, turbo edit, i belive you need a rom burnner, to burn new chips. this should help if you want to run one of these.
http://www.pgmfi.org/twiki/bin/view/Library/WebHome

Bglad420
01-25-2007, 07:20 PM
So the neptune would be a better way to go you think??

Should I get the Neptune, or the RTP??

89T
01-25-2007, 07:32 PM
So the neptune would be a better way to go you think??
Should I get the Neptune, or the RTP??

the rpt is the board that goes in the ecu, then neptune is the software.

when money allows i am switching over to neptune. It has anti-lag and 4 stages of boost control. yea I like it!
the autherized neptune dealers are the tunners, they offer neptune/rtp and dyno tuning as a package.

Bglad420
01-25-2007, 07:36 PM
OK all this is a little foggy to me which is why I asked.

89T
01-25-2007, 07:47 PM
[email protected].
e-mail this guy. his name is jeremy, tell him jerry with the 89turboaccord refered you. he is really cool, he can clear up any questions you have.

Bglad420
01-25-2007, 08:06 PM
Any dealers in seattle area??

89T
01-25-2007, 08:21 PM
Any dealers in seattle area??
check the dealer list on the hrtuning web site.

shepherd79
01-26-2007, 06:55 AM
actually hondata has on the fly system. it is S300. all you need is laptop and someone who knows how to work it.
IMO hondata FTW.

Bglad420
01-26-2007, 09:45 AM
actually hondata has on the fly system. it is S300. all you need is laptop and someone who knows how to work it.
IMO hondata FTW.

http://neptune.evans-tuning.com/viewtopic.php?t=274



.

shepherd79
01-26-2007, 10:05 AM
that comparison between crome and neptune. there is no where in the thread stated that it is better than hondata.
i still think hondata is a lot better. they have been on the market for as long as i can remember. They have a lot of experience and technical support if something is wrong.
http://www.hondata.com/s300.html

bobafett
01-26-2007, 10:37 AM
Interesting. I may lean towards the neptune route after reading that. Seems a lot more functional once you can get past the learning curve.

2oodoor
01-26-2007, 01:04 PM
I will post this as a note to ALL. You are going to have to learn these systems inside and out anyway if you are going to do your own install. So making up a few little wire harness's is really such a minute part of the process.
I suggest having a good book on all obd1 and 2 systems to gain a thorough understanding of it.
I say this because it appears no body makes an ideal bolt on kit to make this conversion, and you are going to have to be a master at trouble shooting these systems anyway once you have crossed over yes?
just 2 cents worths but me love you long time foo ten dolla

Bglad420
01-26-2007, 01:39 PM
We weren't worried about wiring, at least I'm not. I'm researching the management systems. Thats what were discussing as of rightnow, but thanks for the 2 cents now I'm rich BEOTCH!!!

2oodoor
01-26-2007, 05:15 PM
We weren't worried about wiring, at least I'm not. I'm researching the management systems. Thats what were discussing as of rightnow, but thanks for the 2 cents now I'm rich BEOTCH!!!
ooOk. sorry man, I was up in the begining of the thread and posted before I finished.
Yea I would like to see this thread go somewhere, guys we like to see diagrams and pictures , links etc. hint hint, there is a real thirst for this subject here.
Even still, management systems are something that needs to be understood second nature before one really begins to know Obd systems enough to stay outta trouble and not zap good (expensive) parts and troubleshoot.
It seems like there are vendors out there that want to keep you coming back to them and do not reveal "secrets" totally until you pay more. It really is ,however, rocket science but not all that difficult to keep up with once you have a base knowledge of electronics and what the objective is of the management system, which ever one you choose. cough cough

EricW
01-26-2007, 09:57 PM
IF you want run crome or uberdata you can run an ostrich (http://www.moates.net/product_info.php?cPath=50&products_id=57) and use a laptop to tune with.

As for the distributor, if you want to switch from a internal to external with out buying the msd conversion cap. You could just buy a cap for an external coil distributor and run the two wires for the coil from the distibutor to the external coil.

For the harness, IF you've done all of your reasearch you should be able to repin a civic harness(any obd0 to obd1) in a few hours, taking your time.

SQ is the SQUAD
02-25-2007, 09:02 AM
IF you want run crome or uberdata you can run an ostrich (http://www.moates.net/product_info.php?cPath=50&products_id=57) and use a laptop to tune with.
As for the distributor, if you want to switch from a internal to external with out buying the msd conversion cap. You could just buy a cap for an external coil distributor and run the two wires for the coil from the distibutor to the external coil.
For the harness, IF you've done all of your reasearch you should be able to repin a civic harness(any obd0 to obd1) in a few hours, taking your time.

this is the route i am going. chiped p06 ecu, converted civic 0db0 to obd1 harness, modded 93 accord distributor w/ external coil msd cap.

SQ is the SQUAD
02-25-2007, 12:01 PM
i love ghetto engineering

A20A1
02-25-2007, 12:16 PM
i love ghetto engineering

I wanna get the MSD part though for my next one, what I have now is a pain to make again.
At $40 a discap I have to be careful not to mess it up.

hondaman1986
03-24-2007, 08:52 PM
sence u have a p75 you can use a hondata unit for all your tuning and it has a boost feature. you can tune for everything with it. www.hondata.com

Tomisimo
03-25-2007, 05:22 AM
actually hondata has on the fly system. it is S300. all you need is laptop and someone who knows how to work it.
IMO hondata FTW.

Agree. + you'll need a romulator to hook up esu to a laptop.
http://shopping.lightningmotorsports.com/customer/bmy_search.php?brand=Honda&model=Accord&Year=1988&type=

hondaman1986
03-25-2007, 11:23 AM
actualy all the tuning software comes with the hondata s300
and you can download the software right from there website too!


my friend had it on his 90' accord and i tuned it. its easy if you have some time and if you want... a dyno.

you can get great power numbers with the s300.

good luck with the conversion

MessyHonda
04-15-2007, 08:41 AM
bump anyupdates? the more i think about it the more i want to swap also.

'A20A3'
07-23-2007, 05:49 AM
okay so what extra wires/sensors do i have to handle to get this to work?

basically i need the dizzy and adaptor plate, the OBD0 to OBD1 harness jumper, the dizzy OBD0 to OBD1 connector, ECU,have to run a wire to the gauges for a speed sensor thing? what other extra wires is there?

someone please help i am a noob with OBD

EricW
07-23-2007, 02:08 PM
You have to run two shielded wires to the distributor, and 3 for a 4wire O2 sensor if you use the existing wire, I just ran 4 new wires for the O2 sensor since the shielded wire i got already had 4 wires in one jacket. You don't have to run any wires to the dash, you just have to solider in the resistor and zener diode.

Bglad420
09-13-2007, 07:49 PM
OK I'm picking up where I left off, I just ordered my harness, hopefully it arives with in the week, but what I'm looking for is the pin out for rewireing the harness, or if someone can tell me which wires I need to swap out and what not thanks! And where or what wires for the dizzy???

Bglad420
09-15-2007, 08:41 AM
Bump for good info???

MessyHonda
09-15-2007, 11:27 AM
Bump for good info???



yup....but we want to see it on the car running.

Bglad420
09-15-2007, 12:27 PM
OK I got the harness today, fastest I've ever got anything off ebay! Payed thursday got it this morning. I want to get this bad boy on the car, but I need the wireing information for 88-89 MT. I'm using a P75 ecu what wires go where!!!

Bglad420
09-15-2007, 12:45 PM
Pic to prove the harness and ECU

http://i38.photobucket.com/albums/e107/BrentBus/2007_0915dsfg20001.jpg

MessyHonda
09-15-2007, 02:12 PM
Pic to prove the harness and ECU

http://i38.photobucket.com/albums/e107/BrentBus/2007_0915dsfg20001.jpg



i have a running OBD1 kit at my friends house...im not going to put it in till i rebuild my engine.

Bglad420
09-15-2007, 03:57 PM
OK I was looking at carrot's ECU pinout he has for the 88-89 Accord, Is all that acurate? And what is A B and C on the ECU??

Bglad420
09-15-2007, 04:24 PM
i have a running OBD1 kit at my friends house...im not going to put it in till i rebuild my engine.

What ECU are you gonna run?? Is it pinned for your 89?

EricW
09-15-2007, 05:06 PM
I have the pinouts for the harness from when i did my swap. The 86-87 pinout should be close enough to the 88-89 to get you started. Send me a PM with your email and i'll send it to you. Its an excel file or i can convert it to open office.

Plug Diagrams
http://hondaswap.com/attachments/9d1100714191-obd0.jpg

http://hondaswap.com/attachments/10d1100714226-obd1.jpg

Bglad420
09-15-2007, 08:30 PM
I have the pinouts for the harness from when i did my swap. The 86-87 pinout should be close enough to the 88-89 to get you started. Send me a PM with your email and i'll send it to you. Its an excel file or i can convert it to open office.

Plug Diagrams
http://hondaswap.com/attachments/9d1100714191-obd0.jpg

http://hondaswap.com/attachments/10d1100714226-obd1.jpg

Thanks for the pinouts, now since I'm not doing a VTEC swap do I just not worry about those?? And another question is do I just swap wires on the harness that plugs into my ECU and use the conversion harness as is or do I need to swap wires on that aswell?? MY email is [email protected] Thanks!

Bglad420
09-15-2007, 09:29 PM
...

Bglad420
09-16-2007, 11:29 AM
...

Bglad420
09-16-2007, 11:36 AM
...

Bglad420
09-16-2007, 01:57 PM
OK another problem with Carrot's ECU diagram for 88-89, B1 says a yellow wire for AC relay, but there is an empty slot there, and my car had A/C Then next is B7 says GRN/RED but its a TEAL or LT BLUE on the harness, B9 says GRN but its RED on the harness, and B11 Lists BLUE/RED, but its PINK on the harness.

Bglad420
09-16-2007, 02:06 PM
Now for Clip C..

C2 says WHT but the wire is PINK, C4 says WHT/BLU but its PINK/BLU, and finally C16 says WHT, but its PINK. So Carrot your information is a litlle off, where did you get this from have you verified this to be correct.

Bglad420
09-16-2007, 02:09 PM
i have a running OBD1 kit at my friends house...im not going to put it in till i rebuild my engine.

You should pull it and send it too me to copy, then I'll send it back cause this is driving me crazy I can't beleive no ever did a write up for this and there are so many dead end threads about the subject.

89T
09-16-2007, 05:13 PM
if you have the pinouts for both ecu's just use the pin numbers and forget the color code. i would write down wire color and the place you removed each wire from just in case though.
no matter what the pin's in the ecu don't change but from car to car the wire colors do.

89T
09-16-2007, 06:55 PM
integra pinout http://technet.ff-

88-89 pinout
squad.com/wiring.obd1.htmhttp://pages.infinit.net/omus/1989A20A3pinout.html


86-87 pinout
http://pages.infinit.net/omus/1987A20A3pinout.html

this is a good read also.
http://www.3geez.com/forum/archive/index.php/t-37494.html

Bglad420
09-16-2007, 07:34 PM
I have most of that information thanks the last one I'm going through right now. Have you done this yet?

Bglad420
09-16-2007, 07:41 PM
How did I miss that thread. Now I'm looking at the pinouts that are listed on there the ones with question marks are they used?

89T
09-16-2007, 07:44 PM
No sir I have not done this, I have a standalone ems.
you missed that thread because it is in the archives and it does not show up on a search, and i am not sure on those pin's, i only read through th first page.

I am only trying to lead you in the right direction.

Bglad420
09-16-2007, 07:47 PM
No sir I have not done this, I have a standalone ems.

Well damn you. No just kidding. A lot of this is new to me, how does stand alone work? Are you running your original ECU?

89T
09-16-2007, 07:57 PM
my standalone uses it's own wiring harness, and it's own sensors(gm style).it also has it's own tunning software.
you do not retain the stock ecu or harness.

Bglad420
09-16-2007, 07:59 PM
Oh, I'm not going to get into it too much cause I don't want my thread to trail too much. But I was just curious. How much work was that to instal?

Bglad420
09-16-2007, 08:02 PM
you missed that thread because it is in the archives and it does not show up on a search, and i am not sure on those pin's, i only read through th first page.


I'm looking through what they have and comparing them to my notes, and filling in the peices, once I get this done I'll do a complete chart for 88-89 I've already been able to fill in a few peices for the question marks in a short while.

89T
09-16-2007, 08:17 PM
just look at my thread it'll give you an idea on what needs to be done.

b7 you dont need unless you have an automatic trans.
b9-b11 just make sure those wires are the same at the sensors same for plug "c"
2 of those wires in question are oxy. sensors, witch you may have to run acouple more wires for anyway.

Bglad420
09-16-2007, 09:23 PM
Do I need to add any other sensors to my motor? And another question is I know that this swap gets rid of the famed black box, but as far as removing that do I just pull it and blug whatever ports are left open on the engine? Or do I still need a few things from that?

EricW
09-16-2007, 09:34 PM
Do I need to add any other sensors to my motor? And another question is I know that this swap gets rid of the famed black box, but as far as removing that do I just pull it and blug whatever ports are left open on the engine? Or do I still need a few things from that?

If you do OBD1 you need to pull the Map sensor out of the black box and i used the egr solenoid too for the Purge control solenoid valve although its not required.

Bglad420
09-16-2007, 09:46 PM
If you do OBD1 you need to pull the Map sensor out of the black box and i used the egr solenoid too for the Purge control solenoid valve although its not required.

Is that all I need to pull?? What does the map sensor look like never pulled the box open and looked. Where would I mount it after?? And would it be more benificial to use a 4G map sensor?? Oh and thanks for the e-mail!

EricW
09-16-2007, 09:57 PM
Is that all I need to pull?? What does the map sensor look like never pulled the box open and looked. Where would I mount it after?? And would it be more benificial to use a 4G map sensor?? Oh and thanks for the e-mail!

The easiest way to locate them is to find the connectors on the outside, they both had their own connectors, 3 wires for the map and 2 wires of the egr solenoid. That's on the 86-87 any way, not sure if they changed anything in the black box for 88-89. The map sensor is a small black box about an inch by and inch and a half that has one vacuum hose attached to it and the vacuum hose connects to the throttle body. The egr solenoid has two vacuum ports on it and its about an inch in diameter and about 3 inches tall. I mounted mine to the old mounts for the black box on the fire wall. You could use the 4g map sensor but the 3g one will run just fine.

Bglad420
09-16-2007, 10:15 PM
ok thanks for that info. So the rest I just unhook and junk, and plug whatever vacuum ports are left open. right?

EricW
09-17-2007, 05:43 AM
ok thanks for that info. So the rest I just unhook and junk, and plug whatever vacuum ports are left open. right?

Yes, I even removed all of the metal lines in front of the intake manifold.

Bglad420
09-17-2007, 09:18 AM
Yeah I'm looking over all the pinout's at work examing what I can so when I get home I can poke at the harness some more. Any idea where I can get pins for the harness to add ones that aren't there or do I just hack them from my ecu and soilder [sp?] wires back to them??

Bglad420
09-17-2007, 09:26 AM
What about the dizzy I'm using a 90 accord dizzy, for the wiring what wire goes to what on the 3g dizzy clip?? Also what two wires go to the coil?? It was an internal coil, bit I'm going to keep my MSD blaster SS coil instead. Any help with that??

EricW
09-17-2007, 12:07 PM
Yeah I'm looking over all the pinout's at work examing what I can so when I get home I can poke at the harness some more. Any idea where I can get pins for the harness to add ones that aren't there or do I just hack them from my ecu and soilder [sp?] wires back to them??


There where extra wires in the Obd0 to Obd1 conversion harness that weren't used that i removed and placed them where I needed them. I still have 5 or 6 in my tool box that i didn't use.



What about the dizzy I'm using a 90 accord dizzy, for the wiring what wire goes to what on the 3g dizzy clip?? Also what two wires go to the coil?? It was an internal coil, bit I'm going to keep my MSD blaster SS coil instead. Any help with that??

http://i110.photobucket.com/albums/n117/ericrw165/OBD1%20swap/th_F22Distributorcopy.jpg (http://i110.photobucket.com/albums/n117/ericrw165/OBD1%20swap/F22Distributorcopy.jpg)


I'm running a MSD and blaster 2 coil. The msd fried my ignitior in the distributor though so i had to build this, not saying you'll have to but just letting you know about it ahead of time.
http://i110.photobucket.com/albums/n117/ericrw165/n12804481_31516198_576.jpg

Here is the thread about it. Since I had to find alternate components for some of the parts.
http://www.3geez.com/forum/showthread.php?t=56779

Bglad420
09-17-2007, 12:32 PM
There where extra wires in the Obd0 to Obd1 conversion harness that weren't used that i removed and placed them where I needed them. I still have 5 or 6 in my tool box that i didn't use.




http://i110.photobucket.com/albums/n117/ericrw165/OBD1%20swap/th_F22Distributorcopy.jpg (http://i110.photobucket.com/albums/n117/ericrw165/OBD1%20swap/F22Distributorcopy.jpg)


I'm running a MSD and blaster 2 coil. The msd fried my ignitior in the distributor though so i had to build this, not saying you'll have to but just letting you know about it ahead of time.
http://i110.photobucket.com/albums/n117/ericrw165/n12804481_31516198_576.jpg

Here is the thread about it. Since I had to find alternate components for some of the parts.
http://www.3geez.com/forum/showthread.php?t=56779

Thanks for the info. I the pins I'm talking about are the ones that go to the A clip on the 3g my conversion harness is missing A8, A10, and another one not sure beings I don't have the harness handy right now. but where would i go about getting those from? The dealer?

EricW
09-17-2007, 07:16 PM
Thanks for the info. I the pins I'm talking about are the ones that go to the A clip on the 3g my conversion harness is missing A8, A10, and another one not sure beings I don't have the harness handy right now. but where would i go about getting those from? The dealer?

According to my notes, and the honda manual i'm looking at, you shouldn't need a wire connected to A8 on the obd0 connecters in the conversion harness.

I had to move a few pins around in the conversion harness also. I just desoldered them and the pulled them out with a pair of pliers and pushed them back into the places I needed them. If you don't have enough spare pins then I would contact one of the company's that makes conversion harnesses and see if they can sell you what you need to complete your harness.

guaynabo89
09-17-2007, 07:38 PM
Yeah man your best bet is to compare every single pin on both sides of the harness to make sure all of them are right. Some will be OK, some will need to be swapped, and some you wont need at all and just cut.


You can also save yourself some time in wiring things up if you use wires that are already in the harness. Example is or the heated o2. It has 4 wires and the stock only has one. I sent the signal wire of the 4wire o2 through the original 1 wire o2. I then used the switched power from wires alreading running through the engine harness. I also used some of the wires that were for the solenoids in the black box to run eld sensor signal and just repinned the conversion harness accordingly.



I was actually looking though my notes where I basicly made myself a list to where everything should be . Its about 5-6 pages full of notes. So take your time and just make yourself some notes using the pinouts of both ecus you are using. For the vac lines try n mimic the setup from the car you pulled the ecu out of.

IE: I used a p75 which is a ls teg ecu. That car has like three vac lines. one for the map, one for the charcoal canister solenoid and fuel pressure regulator. So those are the only vac connections I needed to keep the ecu happy and out of limp mode.



The wiring and repining of the conversion harness is actually the mos time consuming. Just take your time and make a plan of attack.

Bglad420
09-17-2007, 07:48 PM
OK thanks for all the help, I ended up having enough pins, just relocated them like you pointed out. It's done I think, I need to connect some wires together w/ solder then it will be done. Accually looking over all my notes and papers the ecu harness I bought lists for the dizzy wires I should have looked, so now my next step is getting the dizzy adapted to the a20 head. I really appriciate all your guys help! I'll be needing more soon I'm sure. But yeah I was super teadious withthe harness to make sure no mistakes. I'm using a P75 aswell.

Bglad420
09-20-2007, 12:07 PM
Just bought this today, so hopefully it arrives soon...

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=260048895856&ssPageName=STRK:MEWN:IT&ih=016

MessyHonda
09-20-2007, 01:13 PM
Just bought this today, so hopefully it arrives soon...

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=260048895856&ssPageName=STRK:MEWN:IT&ih=016



to take advantage of that intake you will need to get some headwork done to the car....also make it rev to 8200RPM...haha