My engine is running really rich at idle, which it used to do when I had just the Crower 403's and FPR set at 43psi and no S-AFC. I've been running the S-AFC with no problems for 10k miles, then suddenly a couple of days ago the idle got really rich again as if the S-AFC wasn't doing it's job, and it seems like the rest of the fuel curve is different too.

I checked the wiring and it seems to be okay, opened it up and it looks alright I guess.... What can I do??!! Even at idle when I unplug the S-AFC, it doesn't seem to affect the car. If it's not the module itself then how can I tell it's the wiring without pulling uninstalling the wiring? Could it be the ECU itself somehow? Any help would be greatly appreciated. I'm taking it to a shop tomorrow, but I need to have some idea of what to do.

BTW a friend installed it, but like I said it's been fine for 10k miles and the connections look/feel solid, the blue, orange, and pink wires coming from the S-AFC are not attached to anything, but I think those are extras that are not used on Integras, right?