1995 EX Turbo - backfiring, feels like it is gonna die
I have not had a problem till today.
This car had 180k miles on it
We swapped the motor for another 1995 ex with a lot less miles.
Day after that we put the Apexi turbo on it and installed a new performance fuel pump on.
It has been running great since day one, no check engine, no nothing.
All of a sudden today, I was not even driving hard, it backfired. When this happened, I didn't even realize that it was me.
I parked the car for a couple hours and drove it again. After driving 2 miles I stopped and idled for about 3-4 minutes and while just idling, it felt like it was going to die, my air fuel gauge went to 10.0 (very lean) and the rpms kept going down. My check engine light then came on.
I tapped the gas to keep it at 1000 rpms so the car would not shut off and then drove off slowly. My air fuel was fluctuating between 10.0 and 18.1
I drove it 2 miles home and stopped. On the way home this time it backfired again, and now I knew it was me.
I let it sit for 8min and then it shut off (turbo timer shut it off). While it was idleing the rpms were at 1100 whereas usually they are at 750.

Please help me.

P.S.
This is SPOOL using "UndercoverSI"'s sign on id.

 

Hmm...check your PCV valve. While idling, pinch the hose that connects to the PCV valve, it should make a rattle sound.

No signs of smoke?

 

also, what kind of a/f meter are you using. backfiring is usually attributed to too much fuel especially if you cel came on. it's probably a rich code. if you have too adjust your idle to stock.