other ECM options

[Oldblueaccord]

yea I have the manual for the accord, but I haven't been able to get a complete pin out for any OBD-1 ECU. So you didn't have to swap any pins on the harness, from what I was seeing there was a couple that needed to be relocated.

http://locashracing.com/store/index....b625c4df6a204b

this guy has alotta harnesses made up might help you guys out.

wp

[guaynabo89]

yea I have the manual for the accord, but I haven't been able to get a complete pin out for any OBD-1 ECU. So you didn't have to swap any pins on the harness, from what I was seeing there was a couple that needed to be relocated.

Some of the pinouts were different and did need to get changed.

Here are some places that have manual downloads.

http://www.streetlegalkhk.nl/multime...?dir=computer/


http://www.integra.orcon.net.nz/manuals

[A20A1]

In order for it to clear everything you have to bend the water pipe in the head down and away a little bit.

For the water pipe I have mine capped off with a rubber plug, so I migh just find a way to remove the pipe a plug the hole

[Justin86]

well adding the wires shouldn't be tought. If you can post up what pins to swap and wires you added to where on the ECU it would make life much easier on the rest of us.

[RobT5580]

If you still need pinouts go to www.aempower.com and go in the forums and under the first honda section go into notes on the 30-1000 or the 30-1040 ecu and they have the pinouts there. I had a link but i lost it when my hard drive crashed a few months ago. Its relatively easy well it was with the boomslang harness.

[AccordEpicenter]

apexi also has some pinouts in the VAFC install manuals...

[guaynabo89]

well adding the wires shouldn't be tought. If you can post up what pins to swap and wires you added to where on the ECU it would make life much easier on the rest of us.

Will defintately try when I have time.

[Justin86]

well any news yet and I can't get those manuals to work from those site or load up at all.

[guaynabo89]

well any news yet and I can't get those manuals to work from those site or load up at all.

its alot of info to write up and right now im just to busy to do a full write up.

Just ask me some questions bout what you need and I'll help you like that.

[Justin86]

ok then what I have got so far is.........
The conversion harness will work, but on the OBD-0 plugs A6 needs to go to B2 (purge control solenoid), B11 needs to go to C1 (CYP-P), B12 needs to go to C2 (CYP-M). OBD-1 pins (B15)CKY-P & (B16)CKY-M needs to have the wires added for the dizzy and be removed from their OBD-0 pins C1 & C2 to another, and one wire added for the O2 heater. Then you need to add that resistor for the speed sensor. also add a wire for the ignitor to either pin B15 or B17 on the OBD-0 plug or both?

[guaynabo89]

ok then what I have got so far is.........
The conversion harness will work, but on the OBD-0 plugs A6 needs to go to B2 (purge control solenoid), B11 needs to go to C1 (CYP-P), B12 needs to go to C2 (CYP-M). OBD-1 pins (B15)CKY-P & (B16)CKY-M needs to have the wires added for the dizzy and be removed from their OBD-0 pins C1 & C2 to another, and one wire added for the O2 heater. Then you need to add that resistor for the speed sensor. also add a wire for the ignitor to either pin B15 or B17 on the OBD-0 plug or both?

What yr is your car?

I have the 87 model and the pinouts vary slightlyfrom the 88-89.

Also what ecu are you running?

[Justin86]

It's a 87 wire harness so it will be the same, and I'm using the civic P06

[guaynabo89]

I hada list of what pinout differences there was but I need to find it. I'll try and find it soon and I'll let you know.

Yeah the only things that need to be added are the o2htr, icm ang crank sensor.

Then under the hood the dist has two plugs totalling 10 cables. 6 are the sensors, the icm, power, coil neg.(if using a dist with an external coil) and rpm wire.

I'll try and get those pinout differences soon.

[Justin86]

yea then it sounds like I got most of it, how about how you hooked up the O2 sensor. There is the main one there, heater wire, and ground, and the 4th one I'm not sure on?

[guaynabo89]

o2 uses lg1 or 2 and igp1 or 2.( basicly power and ground) You can get these off the engine harness itself. I used the leads going to the egr lift sensor I think. The ls teg ecu dont use an egr valve.

Then you have the htr wire an o2 sensor leads that go to the ecu.

[AccordEpicenter]

if you burn a new chip for your ecu using uberdata, you can change the code to support a 1 wire o2 sensor instead of a 4 wire, and you can turn off closed loop which eliminates the EGR etc

[Justin86]

well i plan on running a wideband O2, but disabling the EGR I plan on doing.

[rjudgey]

Do a search under Megasquirt a whole load of custom ECU's that are DIY and cheap, but not for the beginneer good understanding of electronics is usefull. Also theirs a company in U.K Emerald ECU's just brought out a cheaper ECU under £400 that seems good value for those who don't like soldering!! I think the biggest prob for most these systems is getting new sensors in or ones that will work to fit, mainly fiddly than impossible!!

[bobafett]

http://www.homemadeturbo.com/forum/i...?topic=31055.0

my contribution to the thread. if you are not a member u should be, its worth signing up...

I have been chipping ECUs on here for a while now pretty successfully (thanks to all my HMT clients!!!) and I have to decided to broaden my horizons a little bit.

Although I will continue to only chip OBD0 ECUs (except for locals, i will do OBD1 as well) for you guys that want it done well and right the 1st time with no mistakes and great service after the sale...I want to offer you the opportunity to learn more and do it yourself at an affordable price.  My goal is to broaden your horizons and make it easy for you to learn about DIY engine management.

Besides the products below, I also chip ECUs.  See my ECU services page.

I have made two chipping 'kits' thus far:

$21 - OBD0 TurboEdit Chipping Kit


$23 - OBD1 Uberdata/Crome Chipping Kit


These are complete, high quality parts kits and I have tried to make it easy to order using Paypal (or you can always send a MO). Prices already include shipping and if you need a chip burnt and sent with the kit, its only $5 extra and I will donate a portion of the price to the Engine Management System of your choice. (In your name if you want)  Smiley

Other donations will be made to PGMFI.org as well for teaching me what I have learned and continuing to make advances in the DIY ECU arena.

PGMFI Chipping Guide for Do-It-Yourselfers

Other products -


RS232 Datalogging Complete Cable
$28.00


RS232 Datalogging Board Kit
$18.00


ZIF Socket
$9.00


Amtel 29c256 Chip
$6.50


(2) - SST 27SF512 Chips
$7.00

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[dillirk]

Do we need to switch to OBD1 injecters too?

[88' Accord Ltd]

no you dont have to

[deevergote]

Man that was a good read!

For guys who want junkyard parts (p75, F22 dizzy) you should check out www.car-part.com . It's a junkyard search engine, and you can find some VERY good prices on there. I just missed a $50 P28 a few months ago! (search for a P28 on ebay... they go for a minimum of $80, some over $150) There's a 92 dizzy on there right now for $25...

[dillirk]

car-part.com kicks ass. I use it at work to find cheap tempered glass. Its so mutch quicker than calling around.

If we use our injectors do we need to use resistors for them.

[AccordEpicenter]

If we use our injectors do we need to use resistors for them.

if we re use our injectors... would we magically not need resistors anymore? Peak hold injectors you need resistors across the board. You can use a ecu designed for saturated type injectors with peak hold type injectors, as long as you keep the resistor box

[dillirk]

I didn't Know we had a resistor box allready. I thought one would need to be added to use our injectors. Thanks for the info. I would have found out the hard way when upgrading to bigger OBD1 injectors and not removing the resistors.