ecu discrepancies

[jurizar]

Hey guys. I have a 92 EX. So from what I understand, the pt3 came in the A1 and the A4, and the pt6 came in the A6. My 1992 EX should have an f22a6 motor. A previous owner swapped in an A1 for whatever reason. So, knowing that I had an A1, I assumed that I could swap in a p12 for better performance. I went in today and looked at my ecu and wouldn't you know it? The PO didn't swap in the pt3 with the A1. I'm running an A1 with a pt6. Can this cause any problems? I've had some problems with my car in the past like anyone else, but I'm wondering if the mismatched ecu could be the culprit of any of my problems? Also, will I improve performance by swapping in a p12 regardless of the pt6? Thanks for any input.

[deevergote]

No problems will come from running an A1 with a PT6, but the fuel map isn't correct for it. The PT6 is fueling for a different camshaft, and accounts for the IABs opening at a certain RPM... which, in most cases, is likely overfueling for your F22A1. You may notice a dip in the powerband where the IABs would normally be opening. Too much fuel for the amount of oxygen entering the cylinders.

A P12 would do some good. Hell, a PT3 would probably wake it up some. Getting the A6 manifold and camshaft would probably do even better, though.

[jurizar]

Could the overfueling make my engine bay smell like gasoline while the car is running? I know one of my exhaust gaskets needs changing on the catback and it smells really strong coming from the underside of the car, but the engine bay smells of gasoline as well.

[jurizar]

My mechanic told me that I need to replace my fuel injector o rings to stop the gasoline smell in my engine bay. any insight on this? Also, does anyone think that my pt6 could be making my car smell like gas due to overfueling?

[kinguin7]

Running rich would cause your exhaust to have a bit of a fuel smell, but that would be behind the car unless you have a pretty major exhaust leak. A fuel leak is a pretty serious safety hazard, inspect your lines and figure out where it's coming from before anything.

[GhostAccord]

If it has been running rich for a prolonged time your oil may be contaminated with fuel. To check, pull your oil dipstick and smell your oil. If it smells like fuel that is obviously where you are getting your fuel smell from.

You should also check for fuel leaks as well. Around the injector seals is a regular area to find small leaks.