GM ECU and 180* headers?
07-31-2013, 02:32 AM
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GM ECU and 180* headers? Will a standard GM ECU work with/be tunable with 180* headers? The reason I ask is because when I accidently reversed my O2s (driver on the passenger side, and vice-versa), when the car was cold and in open loop mode everything was fine, but when it was warm, the second is switched to close loop it barely ran (passenger side was barely firing and I had no exhaust pressure from the passenger side, etc...). So it makes me wonder, with 180* headers, if you're merging 2 banks from each side, how it would run fine if it barely ran when the O2s were reversed?
07-31-2013, 03:58 AM
#2
It ran fine because you were not referencing the O2's. The issue is that each O2 would now be controlling fuel on two left cylinders and two right cylinders.
Your options are:
Run an O2 on a single cylinder for each side. I'd think the back would be best.
Run in OL all the time.
Your options are:
Run an O2 on a single cylinder for each side. I'd think the back would be best.
Run in OL all the time.