1st question, im converting obd0 to obd1 on my 91 integra with a b20z no vtec, ecu, jumper harness, dizzy harness is all phearable & their saying that they deleted the 4 wire o2 even tho i mention nothing about it & when ask they told me dont worry about hookin it up but dont my car need this to run properly? 2nd question, my car currently has a 1 wire o2 now, does that mean i'll be running a one wire & a 4 wire o2 or like they said none at all? they also didnt tell me which chipped ecu they sent me either & theres no decal on the side of it, its been peeled off.

 

well an obd1 ecm is gonna look for the 4 wire o2. otherwise, it'll throw a code. so their tune may be open loop. you won't get as good mileage if so. i would find out exactly what tune it is. and ask for a detailed explanation on why you won't need a 4 wire on an obd1 ecm

 

apparently if my car is properly tuned it should not need it is the answer to my question

 

sure. but then you'll get no fuel trim correction. your mileage is going to suffer. plain and simple. it's going to run on the rich side, because that's what's safe

 

think when i have it tuned the tuner can turn it back on? really dont want to spend money sending it back and waiting. I wanna wire it up this weekend if it can be enabled

 

TBH, i'm not all that adept to the tuning aspect. i'd imagine they'd have to rewrite the tune though