obd2 to obd1
 

i boosted my d15z6 civic 98 and bought a obd1 ecu and conversion harness. the ecu was suposed to be chipped and had turbo maps ect. but installed it and straight away had problems... engine light is on, holds back allot on revs, runs rich on idle but lean when boost and sometimes will run irracticly on idle, overall its worse than the standard obd2 ecu, is there something im missing?? or anything i can do. thanks

Did you give your specs to the guy who programmed it? How do you know it's lean or rich? Do you have a wideband o2 sensor? You can't just slap an ECU in there without tuning.

yer i did give my specs to him, i told him max psi and he said yer i have the maps for that. i know its lean because i have a air fuel ratio gauge running off my lamda sensor. and know when its rich coz she stink

by lamda sensor, you mean stock o2 sensor or wideband? At any rate, you still need to tune. He made you a "base" map- something to start with...

basemap wont get u far, and u cant really tune just based on what setup u have telling someone. climate and location vary, he might could get u close, but wont get u very far. if u boost under lean conditions u are gonna have problems, sooner rather than later

the standard o2 sensor single wire.... is something rong with this set up cause it seams to work fine? and i just found out its a universal sst512 reprogramable chip so like you said just need some1 to tune it

Don't waste your time with the stock O2 sensor. An LC-1 wideband will run you $150 and uberdata or crome tuning software are free. You'll need a datalogging cable and burning hardware too. Or, you find someone locally who will tune it for you. pgmfi.org has a tuner directory.

Do you know how to check for your CEL?

thanks for your help... you say uberdata and other software is free.. where could i get it. and i probaly have to find some1 to tune it as i prb wouldnt have a clue what i was doing as i image it must b fairly complicated. also im not even sure wot CEL is?

pgmfi.org • Index page

crome, uberdata and other software can be had there. There's also a tuner directory.

CEL - Check Engine Light