Project: ECU Database

Well, I'm really reep into the Accord ECU's now and I realised that the're close to NO information shared about our cars concerning the ECU.

I dedided to start this thread so we can build a nice database about our car's ECU.

Here's how it will work

Get any 3rd gen Accord ECU that hasn't been posted here. Scan it and post it here.

You just have to name the file according tothe ECU number printed on the side. Then, give a brief description of where it came from.

Here's what I got:

PJ0-A03 201. Accord SE-i 1989 Canadian Manual
PH3-0732 Accord 2.0si 88-89 JDM Auto
PH3 Accord 2.0si 86-87 JDM (I need more info from thegreatdane about this one)

I scanned the ECU's I got with my scanner set at 150 DPI. You can also use a camera with a MACRO function. What's important is that we acually see the board and the markings on the MCU.

Thanks for your time.

Once this is done, The next level will be ECU tuning :D

i have a pjo from a usdm 88-89 lxi, and a p75 from a 94+ ls (teg).

I'll edit this post and put up pictures once i get home from work.

The ecu that I scanned is an '86-'87 (JDM='85-'86) auto 37820-PH3-043 (-0431 if you go by the part nr. sticker). Date: 86.10.03

I wanted to get the ecu scanned with my scanner, but it resulted in a really dark picture???, so I took it with a digital camera.

This is a EDM A20A4 no EGR and no O2 sensor
the number is 37820-PJ0-604
the car was 89 EXi
http://www.pieszczoh.republika.pl/37820-PJ0-604-1.JPG
http://www.pieszczoh.republika.pl/37820-PJ0-604-2.JPG
http://www.pieszczoh.republika.pl/37820-PJ0-604-3.JPG

:-)

oh man i would love one of those!

one thing i've noticed about the usdm ecus is that '86-'88 are smaller than '89. the '89 ecu is longer like the jdm ecus you scanned.

here's a link to a picture of another edm ecu without egr or o2: http://www.marklamond.co.uk/ecu-data...04/pj0-604.htm

what the hell is he talking about where it says, "Base mixture is set via a potentiometer in control box in engine compartment." ?

i've got some pics, i just need to find a way to upload them. my average pic is about 3mb and i don't think photobucket will let me put something that big.

i was wrong about the '89 being longer. it looks like all the kl emission ecus are that size. another thing i noticed is the '88 and '89 kl ecus use OKI processors instead of the matsushita.

pj0, 88-89 lxi, 0bd0
http://memimage.cardomain.net/member...14_93_full.jpg

p75, 94+ integra LS, obd1
http://memimage.cardomain.net/member...14_92_full.jpg

02 rsx-s, k-pro tuned, obd2(?)
http://memimage.cardomain.net/member...14_94_full.jpg

Yep, so that's the ecu collection. You're welcome if it helps, sorry if it doesnt :)
http://memimage.cardomain.net/member...14_95_full.jpg:rockon:
http://memimage.cardomain.net/member...14_96_full.jpg

WOW!!!!

That PJ0 ECU looks like it's OKI 8XC154 based.

Do you have any close-up pictures of it?

It doesn't look like it's made by Matsushita or but by Densigiken instead. This is VERY interesting!!! It even has an external ROM.

We're getting closer to what I'm looking for!!!

ok im at a loss...im no ecu tech nerd so what are the differences you guys are looking for? and what are the advantages of one vs the others?

excuse the noobness...i just want to know

Yeah, it has Oki written all over it. But, it IS made by denshigken.
More pics, as requested:
*edit* i tried using a different pic site last night...guess i'm going back to cardomain...*

http://memimage.cardomain.net/member...14_97_full.jpg
http://memimage.cardomain.net/member...14_98_full.jpg
http://memimage.cardomain.net/member...14_99_full.jpg
http://memimage.cardomain.net/member...4_100_full.jpg
http://memimage.cardomain.net/member...4_101_full.jpg
http://memimage.cardomain.net/member...4_102_full.jpg
http://memimage.cardomain.net/member...4_103_full.jpg

My camera doesnt do high res stuff, and apparently my scanner doesnt, either. I dont get how you guys get such clear shots

....

Hmmm. This is definetly the ECU I'm looking for :p It has an external ROM and a TTL Connector. I wonder how many 3rd gens were built with this ECU. This one is DEFINETLY chippable with other fuel maps and tunable to some extend.

I got my hi res stuff with my scanner, that's all. It's an old Epson 610 but it works great.

How much do you want for that ECU? :p j/k

Honestly, this definetly needs to be investigated.

I bought it from Bitesize or something, from ebay. This one was in good condition, and really cheap. Make me an offer, i already have an ecu. If it'll help you, or the site, then i'll gladly give it up.

Carrot, can you point out on his pics where you are seeing the external ROM and TTL connector? Also, what makes you think this is chippable?

Getready, please post any/all numbers that are on the outside of the ECU to show what type it is (PJ-0, Y-1 etc.). Also, is it for a manual, or automatic, and what model/year?
Thanks.

I'll give you what i've got:

i bought it off ebay from a member on this board named BITESIZE. The ecu is, from what i understand, a manual 88-89 usdm lxi. under the barcode, it has the number 37820-pj0-l022. Under that, there's a KL . Under that, there's the number 312-110590. For one of the plug outlets, it has the number 312-110590 l20 stamped on it.

Well, reason I ask is that I have a manual '89 LXi, but my PJ-0 ECU looks completely different. Here it is:
[IMG]http://img78.imageshack.us/img78/788/pj014ly.th.jpg[/IMG]

As you can see, it is completely different. Wonder why?

Yeah Rob, this one is made by matsushita. It have that same one here and still can't do anything with it. It has no external ROM or connector.

The OKI ECU is much more vesratile.

On this picture you can see everything.

http://memimage.cardomain.net/member...4_101_full.jpg

The 28 pin IC is the actual ROM. To the right, you have the OKI 80C154 MCU. The 24 pin IC is the RAM.

Just below the OKI MCU, you have the TTL connector (CN3)

I can desolder the ROM, read it in my chip burner and see where the fuel tables are. I wonder how they look like. Will they be similar to the PH3 or the PM6 ?

There's only one way to know :D

This is cool, i thought i had a normal ecu. But i looked at all the pics, and it looked way different from the other pj0s mentioned.

Cartoman i have a stock Rom out of a usa PK2 MT Ecu if you need let me know.

Yeah, anything that is similar to our ECU will be profitable.

I need to get my hands on an OKI PJ0 now :p

from my junkyard research, all of the kl (california emissions) '88-'89 ecus have the OKIs and say denshigiken on the top right of the board.

the only ka ecu i have is from an '88 lx-i, and it is the smaller size with the matsushita.

Hmmm California ECU's might gain some value soon. I definetly want one of those just to look at them. I can't beleive no one thought about this before. Those Matsushita units just suck (so far).

Since the PJ0 has no control over the ignition, the fuel tables will be pretty straightforward I guess.

Cailfornia ECU 37820-PK2-6684 L-MT http://memimage.cardomain.net/member...7_153_full.jpg http://memimage.cardomain.net/member...7_154_full.jpg

let me see if i've got this right:
IC4 is the IO (oki6260)
IC5 is the MCU (okiC154)
IC6 is the EPROM:omg: (oki38256)
IC7 is the RAM (oki5128)
IC9 is the ADC (nec7004c)
CN3 is the TTL
looks like we have a full-fledged obd-o ecu! just like a pk2 or pr4, etc.

that's right!

That ECU might lack the ignition outputs tough. This is where the fun begins. If it's based on an Oki processor, there are many things that might be interchangeable with those other OKI ecus

so this means that we might be able to chip our ecus?? if so we wouldnt need to conver to obd-1 would we??

i'm no expert, but i don't see any reason why we wouldn't be able to chip these ecus. when people would say, "you can't chip the pjo" their main point was always the lack of a replaceable ROM. in the '88-'89 kl it appears to have a replaceable ROM.

if you want control over the ignition, you would have to go obd-1. but with this ecu we could still change fuel maps, the rev limit, the use of emmissions sensors, etc. also, for people going to obd-1 or standalone we could get them a basemap to download so they would have a basic idea of where to begin tuning from.

*edited*

TWOLOUDNPROUD's ECU is a PK2 (at least. that'S what he said)

whoops. i totally missed that. that would explain the similarity:uh:

I found this on PGMFI.org

Nice heh?

http://carotman.no-ip.com:8888/3geez/ecu/JET_PJ0.JPG

so wtf exactly does this mean... i have a really hard time telling what im looking at by seeing these, obviously its a jet chipped pj0 by the name of the file, but does this mean that in theory we could run turbo edit on an 88-89 pk2 ecu and have tunable setup?

No, we're far from that point now.

However, having a JET chip for the PJ0 is a nice thing. With this we can compare what has been changed and reverse engineer the code. It would be easier to understand how those fuel tables work. This is an Euro PJ0 with an external ROM tough. I still need to get my hands on a 86-87 PJ0 and see if it has an external ROM too. The 88-89 I have doesn't.

One day, Turboedit might support the PK2/PH3 and the PJ0 :D. Since Turboedit is open source, we might call our little version 3geezEdit

What do you think?

i think www.megasquirt.com :( so much easier, and in the longrun, probably better. and its just as viable a solution on a pj0 powered car as any other car. :(

Simpler for now maybe. But not everyone has the skills to install this kind of thing. If all works out as planned all you would need to do is install a chip and socket in the stock ECU, that's it. Alot simpler than the megasquirt setup.

Also, if we can mod the stock ECU, we can retail the stock emission controls.

I like complicated things anyway. I can learn the how the deep guts of the car work and I just love it hehe.

carotman your awsome :rockon:

Quote:

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Originally Posted by carotman

Simpler for now maybe. But not everyone has the skills to install this kind of thing. If all works out as planned all you would need to do is install a chip and socket in the stock ECU, that's it. Alot simpler than the megasquirt setup.

Also, if we can mod the stock ECU, we can retail the stock emission controls.

I like complicated things anyway. I can learn the how the deep guts of the car work and I just love it hehe.

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if it came to chipping the pj0 in the next 6 months i will probably go that route as opposed to megasquirt. i have several months to actually decide on a management solution. would pj0 chipped solve our lame lack of computer controled timing? if there is a way to get timing tables into the maps then im all for this solution. :)

Well, you see, the Cali emissions PJ0 is OKI80C514 based. The other ECUs that use this architecture all have ignition control so in "theory" if would be possibe to mod this ECU to control the timing. You would still be stuck with the vacuum dizzy tough and will have to find another obd-0 dizzy that fits there.

The other problem is that most of the PJ0s are made by Matsushita. I don't know how compatible the codes are between the OKI and Matsu architectures are.

This is totally new stuff we're working with. We're the bastard child that no one cares about. I don't know how to code in assembly "yet" but I reading this site will help for sure

http://www.8052.com/tutintro.phtml

BTW, if anyone else wants to join efforts, come on in!

im struggling in C++ code right now, i dont think u want my help trying to fuck up with assembly code! :)

yeah at this point i think ditching accord ecu and rolling out with megasquirt would be nice. then we could run a different ignition system and get rid of that bastard distributor once and for all!

the '86-'87 california ecus have a 28 pin chip in the same spot (IC3) as the jet chipped one you posted. the chip has HN613128P on it.

Are those made by Matsushita too?

This is a 128k chip.

yes, the '86-'87 are matsushita.

i'm a little familiar with asm. And i liked it too... that is just pure sick. Nice things about assembly is it's always the same so you can make an assembler and have a little higher code then pure hex!

Quote:

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Originally Posted by Strugglebucket

yes, the '86-'87 are matsushita.

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Well, they could be chipped with that JET program for sure then. I'm not sure about the 88-89 but I will come with something soon.

88 Preludr ECU Mag Date 6-15-1987 37820-PK2-6623 -MT http://memimage.cardomain.net/member...7_159_full.jpg http://memimage.cardomain.net/member...7_160_full.jpg

Quote:

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Originally Posted by carotman

Well, they could be chipped with that JET program for sure then. I'm not sure about the 88-89 but I will come with something soon.

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hey, what year is that edm ecu from? do you have that ecu in your possession or do you have the file from the jet chip?

It's from an 86-87. ANyway, the EDM ECU's were similar from 86 to 89 because the idle controls and manifolds stayed the same for those years.
I don't have this ECU. Someone asked for some info about this on www.pgmfi.org. I hope to have the .BIN very soon...
Time for ECU upgrade my friends!

Well, I got the Cali PJ0 in today. Thanks to Strugglebucket!!!

Here's what it looks like
PJ0_L022 picture

And the BIN I extracted
PJ0_L022 ROM

I compared it with the PH3 ECU I have here... Bad news,

Edit: This is wrong information, see other post below ==> These 2 are not compatible. The PJ0 will not run the PH3 or PK2 code out of the box. I got a solid CEL when trying the PK2 code in the PJ0. There's no luck with that then.

However, the boards are "relatively" similar. I will work on the PJ0 ans wee what I can do about it. There are no traces on pin B10 and B12 on those for the Crank sensor. This doesn't mean we can't add one but it sure looks bad.

Now for the ROM itself. This rom is 64k (256 kilobits) but honestly it could have been a 32k.

I did find something in this ROM

At offset 62C8

There is something that looks like a 2 COL table. Could it be the fuel?

Same thing at 645E

There is also something at 662E (11col) and a similar table at 66F9

I'm still looking!


I will compare this ROM with the other early Honda programs and see what I can do.
Now, I desperately need a Matsushita ECU ROM and see if it's compatible with this one.

Oh, you guys can work on this too huh!. Use the analyse.exe tool found on www.pgmfi.org

Well, I'm a dick. :Owned2:

I don't know why but this PJ0 ECU didn't like the 27C512 ROM that I used for the PK2 code.

I tried it with the original PH3 ROM (256k) and I didn't get a solid CEL. Instead, I got a code 15 (Ignition output signal)

No surprise here since the PJ0 doesn't have any output for this..... YET :D

This means the PJ0 isn't a hopeless platform, at least the cali emissions. I have yet to figure out about the Matsushita one. With slight mods, the PJ0 could maybe use the same code as a PM6, PH3 or PK2


Stay tuned.

alright, now it's getting interesting! glad you finally got the ecu.

Well, I noticed that one of the 2 wires for the crank, cyl and TDC sensor are all wired together on the PK2 and PH3 ecus and they are just not connected to anything on the PJ0 !! This is pin B12, C2 and C4.

The wire is there, it's present on the dizzy, it goes to the ecu but the ECU just doesn't use them. They are basicaly a ground. My question is, WHY?!? why would they take the time to put a wire if it's to ground it anyway.

This leaves me with only 1 wire to add for the crank sensor on a PJ0 tough. It sure has alot of stuff connected to it so I don't know if I'll ever be able to add it but who knows.

Carotman look what's on Ebay http://cgi.ebay.com/ebaymotors/JDM-H...QQcmdZViewItem

Quote:

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Originally Posted by carotman

Well, I noticed that one of the 2 wires for the crank, cyl and TDC sensor are all wired together on the PK2 and PH3 ecus and they are just not connected to anything on the PJ0 !! This is pin B12, C2 and C4.

The wire is there, it's present on the dizzy, it goes to the ecu but the ECU just doesn't use them. They are basicaly a ground. My question is, WHY?!? why would they take the time to put a wire if it's to ground it anyway.

This leaves me with only 1 wire to add for the crank sensor on a PJ0 tough. It sure has alot of stuff connected to it so I don't know if I'll ever be able to add it but who knows.

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sorry, i'm not quite following you. the pjo makes use of the cylinder and TDC sensor, right? so which wire are you talking about that is only a ground? and is pin B12 connected to the ecu circuitry on the pjo?

Nice PH3 on Ebay. I wonder if it's any different from the one I have. If no one buys it, I gues I'll get this one too and compare both electricaly and also the Code. This way, we can be 100% sure if there'S a difference between the auto and the manual ECU.

Strugglebucket, I wanted to add a crank sensor to the PJ0 (if it's even possible) and I noticed that one of the 2 wires for the crank sensor is connected to ground on the other Honda ECUs. In fact, the Crank,Cyl and TDC sensor all have one lead connected to ground.

hmm. maybe the timing is more precise with a common ground on an equal path as the switch?

Carotman check this out http://cgi.ebay.com/ebaymotors/ws/eB..._BIN_Stores_IT

Hmmm, the guys says it's not a simple rechip. However, the ECU looks just too OEM to me. I mean, the sticker is a OEM Honda. I'm sure this part number matches one at the US Honda dealer.

I sent him a message asking him for more pictures. If he's legit, we'll have pictures. If not... well you know what to do.

He send out the ecu out to reprogram the stock rom with the mugem program so the ecu looks stock.

Well, that's exactly what I'm talking about. This "Mugen" program (if it's really from Mugen) can be bought for dirt cheap on ebay. There's no point in asking 200 bucks for this.

Quote:

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Originally Posted by carotman

Well, that's exactly what I'm talking about. This "Mugen" program (if it's really from Mugen) can be bought for dirt cheap on ebay. There's no point in asking 200 bucks for this.

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where did you get your rom reader from i will buy one and the ecu off ebay to .

Yeah i'm kinda interested in a rom reader now too.... since all this talk converts to 2nd gen prelude ecus too....

carotman, i'm still looking into how long those 4 similar pieces of code are. They are the same for the 25 bytes they take up. I'd be curious also what they stand for. I'm going to keep on looking into how long they are similar for... I'd imagine it has more to do with sensors that have similar functions, or it's a reference to something that has the same address in memory.

ok well i've compared the first 2 sections you've mentioned. They are both preceeded by 32 bytes of 255 (FF) the next 374 bytes have the same code. I'm not too sure what it does, I'd be curious as to what has the 2 same codes, unless it's a checker of sorts. guess i'll keep looking my self.


Now one thing i did kinda notice is from section 65F4 to 708A, i'm curious if that isnt' the fuel curve. I dont know much what these particular chips control, nor do i know how it address each of it's own pins, but if we can find a way to find how it differentiates between it's pins, or what address it's at, then this project would be a bunch easier cause then i could just search for that particular screen... deassembling is a very slow and hard process...never did like it much... what ever happened to the good olll.....new days of visual this and that!.... can you imagine a visual basic version of this chip...hmm me either.

Immeraufdemhund, if you wan to dissassemble the chip, you can try this program

http://www.pgmfi.org/twiki/bin/view/Library/PgmfiD51

This is a dissassembler program for the Intel 8051 chip.

If you guys want a ROM reader, I know of a few good ones but a basic ROM reader for the Honda ECUs would be the Willem Burner. You can get this one on Ebay or simply at www.mcumall.com

You can get the enhanced or dual power. I got the dual power and it does everything I need so far.

Now, for that PK2 Mugen ECU, the seller told me that it's a stock ECU shipped with the Mugen rom..... This rom sells for 10 bucks on Ebay and I'm not even sure it's a real Mugen ROM. Asking 200 bucks for this ECU should be considered as fraud IMO.

Wow great work guys!! Keep on it!

This is really exciting to see... keep up the good work!!

i finally got analyze.exe to open the bin but i have no idea what i'm looking at.:rolleyes:

what should i set the columns and precision at?
*edit* 15 and 1, yay.

Great job, carotman, and all of you guys. this is very exciting. I would, more than anything, like to make my pj0 let me hit closer to 8000rpm (at least 7400++), and you guys are on the road to unlocking that.

I've toyed with going obd1, and/or finding a real ph3 ECU, but this is what I think I would like to go for the best.

Wish I had any way of helping.. good luck

ok this is what i got out of the 4 pages.

The California Emissions kl pj0 fomr 88-89 made by denshigen (however its spelled) with OKI are the best bet for chipping. Every sensor you need is there, but a crank sensor, and there is even a wire for it, at pin b12, but it only functions as a ground.

basically you are very close, but hit a wall? keep up the good work, and let me know if i can help any. I just found out that my car is a Cali SE-i, just let me know.

Quote:

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Originally Posted by carotman

Oh, you guys can work on this too huh!. Use the analyse.exe tool found on www.pgmfi.org

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Is that what it's called... where on PGMFI is it? I got to their home page then looked under software but only saw uberdata programs.
Do you have a direct link to the download?

here's the link to analyze.exe. it's at the bottom of the page.

http://www.pgmfi.org/twiki/bin/view/Library/NicoAnalyze

Is it supposed to be in a different language. :) oh well I think I figured it out.
Thanks for the link.

aqnalyse.exe basicaly helps you to find where the fuel tables might be. It can do nothing by itself unfortunately.

If the fuel tables setup can be worked out, we can modify them easily as needed.

hey carotman, do you know where the fuel tables are located in the pk2? if i could take a look at those i think i'd have a better idea of what to look for.

I noticed that there are four 20X16 tables beggining at adress 5900h
There are two 11X17 tables at 5DF5h
There are two 20X4 tables at 5FA0h

I don't know what they are for yet but my guess is that the 20X16 should be the fuel.

okay, i think i'm starting to get it. you manipulate the number of columns to help you identify different tables. i looked at the the pk2 tables you listed and those ones sure are easy to see. so far i don't see anything like that in the pjo, except those 11col tables you listed but they're tiny. it just looks weird, like most of the interesting stuff is down around past 6000.

that 2col you found is pretty big.

Would that PH3 flash work, even without an ignition output? Would I be able to let it have its CEL, and just deal with the CEL and have the motor run with my vacuum advance dizzy?

Because that sounds just fine to me...

Nope it won't work. The PK2/PH3 program doesn't work in the PJ0 ECU so far. I tried it and I only got a Solid CEL (same thing as a dead ECU). I'm planning to get involved a bit deeper into this and at least try to find the Rev limiter so turbo guys can push their A20A a bit harder.

If everything goes as planned, my C program will be able to find the REv limit for the PK2/PH3 and the PJ0.

I'll keep you guys updated.

which potentiometers?

sorry, still lost. which ecu are you talking about and what are the adresses on the board?

Carotman, have you figured out what the map sizes are in the OKI PJ0 ECUs yet? I haven't even looked, but I would guess we do the same with these as the PK2/PH3 hybrid, where we just implant the PH3 or PK2 Maps in to a PJ0 ROM... I guess I need to look at this to be sure.

Well, the PJ0 is really different from everything I've seen. The fact that the ROM I got was from a california emission car might be the reason.

I would like to get my hands on the regular PJ0 ROM but the 88-89 ones seem to use an internal ROM that I haven't been able to get out.

I suggest that you look at this by yourself. Maybe you can see something I didn't see.

hey, did you ever get the .BIN for the 86-87 jet ROM?

No http://forum.clubcivicquebec.com/images/smiles/cry.gif

carotman what do you think of the PR4 Ecu from the 90-91 integra to run the b20a? http://i7.ebayimg.com/03/i/07/be/d8/f3_1.JPG

bump

It would work with the OBD-0 distributor and upper bracket from the B18A1

However, that thing will run too lean and won't have enough timing for the B20A. It will need to be dyno tuned and have a custom program made for it.

Carotman have you tried Data Logging with the PK2 Ecu ? The pk2 has cn3 socket for the Data Logging.

You can not just solder in a datalogging cable and start datalogging on a sctock ecu. And since no one knows the code of the PK2 ecu's it's unlikely that it will ever be possible.

That's right. There's probably a software somewhere that enables datalog in the ECU but it's not available to anyone in the public. Some of the other Honda ECU have been reverse engineered and can now be interfaqced with... it's just not the case with our ECUs yet.

totally unrelated question to the current discussion, but i figured i'd hijack a thread without searching or reading the thread and just ask. is there any benefit for using an auto ecu on a manual car or vice versa?

Check out my PK2 Hypertech controller i got it from Egay for more info go here http://www.caraddons.com/Catalog/sub...ech_shogun.htm http://i21.ebayimg.com/01/i/07/dc/88/ff_1.JPG http://i4.ebayimg.com/06/i/07/e2/67/1c_1.JPG

Quote:

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Originally Posted by snoopyloopy

totally unrelated question to the current discussion, but i figured i'd hijack a thread without searching or reading the thread and just ask. is there any benefit for using an auto ecu on a manual car or vice versa?

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It wont improve shifting or anything like that. Our auto trans isn't controlled by anything more then the TV cable.

As for timing / fuel curves differences or anything like that I dunno.

Other then that I say stick with the ECU you have.
You may end up with an extra function manuals don't need or a loss of a function auto needs, like an idle controller solenoid that kicks in when you're in gear to help keep the idle up.

bump

Quote:

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Originally Posted by TWOLOUDNPROUD

Check out my PK2 Hypertech controller i got it from Egay for more info go here http://www.caraddons.com/Catalog/sub...ech_shogun.htm http://i21.ebayimg.com/01/i/07/dc/88/ff_1.JPG http://i4.ebayimg.com/06/i/07/e2/67/1c_1.JPG

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have you tried it yet? if you go by their list it says it should work on '88-'89 accords. i'm guessing the rev limit is only adjustable up to the stock limit so that's kind of useless. and i don't see how it would be able to control ignition timing on a vac advance systed unless it just works like one of those msd timing controllers with a constant advance or retard.

Quote:

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Originally Posted by Strugglebucket

have you tried it yet? if you go by their list it says it should work on '88-'89 accords. i'm guessing the rev limit is only adjustable up to the stock limit so that's kind of useless. and i don't see how it would be able to control ignition timing on a vac advance systed unless it just works like one of those msd timing controllers with a constant advance or retard.

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i have not got it yet but as soon as i do i will post.

bump

http://i21.ebayimg.com/01/i/07/dc/88/ff_1.JPG I just got it today and it works sweet i can change my Air/Fuel Ratio and RPM Limiter up to 8000RPM and Ignition Timing Adjustable from10- to 10+ you can feel the difference.I will have pics of it installed tomorrow.

so it can bypass the ecu's rev limiter? have you tried to rev past it yet?

is the air/fuel programmable for different rpm points?