Im still trying to nail what is causing the break in my car when the throttle is still at a certain point. At narrow throttle and any %, if i hold it there it will not stop breaking up. Is this something to do with it being obd0-obd1? I have dsm 450's, crome, obd1 everything etc. Is there some way to tune the narrow throttle fuel in crome? Or do you think it is something mechanical? The breaking up feels like injectors/fuel delivery misbehaving. All my obd0 days, Ive never had this problem. My first obd1 converted car, same fuel/turbo setup and now it acts like this. Is it maybe because I have crome set to run closed loop? (no o2)? Any suggestions would help alot thanks.

 

Honestly, I doubt you are going to find a solution to your problem over the internet but I will try to give you a hint as to what your problem is...

Are you running a wideband ?
If so, what are your air fuel ratios at X vacuum level ?

Does the vehicle idle normally ?

 

Turn your primary o2 on.

 

 

Its disabled because I havent gotten the bung welded in yet, Ill do that next time Im off work early. I was thinking that was the problem, obd1 relies on the o2 sensor more than I thought.

 

You are both incorrect. You can leave the o2 sensor feedback disabled in crome or hondata without any problems at all (if the vehicle is tuned properly).

You did not answer my questions that I asked, therefor I am done trying to help you figure out if your problem is your tuning or wiring over the internet.

Good luck with your setup.

 

You are either running too lean at those load points, something is wrong with your TPS or something is wrong with your distributor.

 

Or his wiring, or he is running the incorrect distributor... Who knows.

 

It could be he has a bad Bin. Happen to me once (long time ago).
What ECU you running?

 

If he is tuning his car, he would want to run it in open loop (disabled O2). You dont want the O2 to make any short term chages while tuning.

I believe it has to be 2 things. wiring like MTBER said: meaning his conversion from OBD0-1 he missed something or he used tape to do all his wiring hack instead of properly soldering them.
or he has a bad BIN.