Running pig rich on stock fuel system....

[my95tsi]

Ok so far i still have the stock fuel system on the car laong with the stock t25. I just got my datalogger recently and it tells me that my 02 sensor voltage is 1.03 at wot. I also have an apexi turbo timer with a built in a/f gauge an dit also tells me 1.03. I just thought it was a faulty gauge until i got my pocketlogger. I don't have a cat on my car and my exhaust is black on the inside, nothing too unusual. But my car tends to back fire every so often from 1st to 2nd and 2nd to 3rd. Is there a way i can lean it out a bit without using an afc. I still have stock injectors, fuel pump, etc. What could be causing this. BTW, i'm running 15psi when it reads 1.03

 

[my95tsi]

Anyone, i hit 1.05 the other day. What could be causing this??

 

[unlikely hero]

I have the same problem. Stock fuel system w/ a rewire(this is what I think bought the car used and they said its stock). I have to keep the sAFC at -10 pretty much the whole time or I'll bog. I'm waiting for my datalogger to come in this week to see if I can tune her better cause she still pops flames between shifts and rich at idle. Wish I knew what the hells going on.
=Jason-

 

[turbospyder19]

Wish I could help, I've got the same problem though! Stock fuel system, car blows gas and soot like no other! No backfire but very rich A/F mix. Hopefully someone can help...

 

[my95tsi]

well i fixed it. Turned up my voost to 15.5 psi and my o2 are .93 at wot.