OBD 1 ECU Modding ..

[vtecjdm]

Hey,

Was wondering if any of you out there have done this or not .. modding the obd1 ecu.
I know that this is done on obd2 ecus with palms and laptops (alway using the oem ecu) .. but what about the obd1 ? I mean there is no connector to connect to the palm like on the obd2 ecus ...

How on earth do they mod the obd1 .. ? chucking out the chip and connecting it to a pc or what ?

Any info on this issue much appreciated ...

Thanks

 

[xj0hnx]

They socket it so it can be plugged into without taking it out.

 

[vtecjdm]

yeah i immagine they do that .. but specifically ... in other words, can anyone mod an obd1 ecu ? what tools are needed ? (obviously keeping in mind that you must be technical to touch the timing maps .. pretty sure its a tough job)

 

[xj0hnx]

www.hondata.com does, or you can DIY with something like uberdata and a trip to Radio Shack.

 

[vtecjdm]

Heared lots about hondata // but verrry few about uberdata .. any website or link with info ? seems like a duy job

 

[Grifter]

I have a JDM and a USDM ECU... I just modded my USDM with datalogging... works great

http://www.ecimulti.org/uberdata/index.html

there was another website to... but I have the link at home.

 

[pills_PMD]

www.pgmfi.org

 

[nfn15037]

Originally posted by pills_PMD@Oct 5 2004, 02:00 PM
www.pgmfi.org

[post=398597]Quoted post[/post]​

All you will ever care to know about Honda ECUs.

 

[kyleirwin]

instructions on how to chip your obd1 ecu.. http://www.moates.net/documentation.php?documentation_id=17

check out the uberdata forums listed above for more info on burning chips and tuning.

 

[vtecjdm]

Ok Just what i was looking for... thankssssssss

My only prob now you know what it is ??
Finding a good ol P28 OBD1 ECU ... help !!!

Also ... any writeup or diy on how to convert p28 auto ecus to manual ?

 

[kyleirwin]

check the classified forums, h-t's classified forums, ebay, the parts trader... they're all over the place, expect to spend around $120.

 

[nfn15037]

Originally posted by vtecjdm@Oct 5 2004, 03:07 PM
Ok Just what i was looking for... thankssssssss

My only prob now you know what it is ??
Finding a good ol P28 OBD1 ECU ... help !!!

Also ... any writeup or diy on how to convert p28 auto ecus to manual ?

[post=398647]Quoted post[/post]​

Auto to manual can be done in the software. Read the wiki on pgmfi.org, any and all questions you may have can be answered there.

 

[pills_PMD]

or my web page in my sig has a link to converting obd1 p28 ecu's from atuo to manual via changing resistors

 

[vtecjdm]

Thanks guys you`ve been of real help !

I got this other question i can`t quite solve.

Now.. say i got a p28 ecu .. and socket it up with the Uber socket kit, BUT for some reason i do not chip it ! Is it true that the ecu will try and find the eprom with the new parts installed, but will not work since its not there ? ..

You might say .. why on earth do i NOT want to install the eprom after i socket up the ecu ?
Well i`d like to just go back to stock if i might have some probs with mapping etc ...

I have a D15B vtec sohc engine ... i`ve been told that since the ecu will start looking for the eprom but wont work without it .... i could just pop in a chip with all the stock maps etc ..
Were do i find the bin file for a D15B though?? Or if i just import the p28 settings it will work like stock ??

HELPPPP how can i run stock p28 with an uberkit in my ecu ?

 

[pills_PMD]

you can cut the jumper you put in across J1 and it will make the ecu not look for the eprom.

i woudl imagine you can find someone who has a program for a d15, or just start out with a base map and go get that bad boy tuned.... takes out the guess work

 

[vtecjdm]

SURE ! thats my main aim to get it carefully tuned myself ./ but without a lampda meter ... its kinda risky ... too lean and the engine will go PUFFF... KAPUT if u know what i mean.

If i get that jumper cut ... will i also be able to do datalogging via usb or serial ?
In other words ... can it be done to datalog a stock ecu not chipped ? .. never saw any answer for this on the net ?

 

[pills_PMD]

in that case, you would burn a chip of a stock fuel/ignition map and still be able to datalog

 

[vtecjdm]

Ahaaa .. yeah that sounds good.
My only prob is that since in the usa eeeeeeevryone talks about B16s B18S H22s .. turbos n stuff .. (fuel is cheap in the US .. unlike in europe which is bloddy expensive!) well ... i`m not quite sure i`d be able to find a map for my small but faithfull JDM D15B ... (mind you its got 130hp)

If anyone can share one with me i`d be verrrrrry grateful

Btw .. is there anyway i can burn a map from my stock ecu p28 ?? so i`d still be able to datalogg ?

Thanks