Air/fuel problems

[95gstbeast]

I recently completed a turbo rebuild and ever since then my autometer shows I'm running lean. It is a narrowband afr which I know isn't much good but it was on it when i bought it. I am running a 14b and controlling fuel with a safc2. Even if i put the fuel at max the gauge shows lean only. I'm mainly just looking for advice on whetherr it's a ba gauge or bad o2. According to the safc2 it shows the u2 volts starting at 0 then goes up to.8 as the car warms up. It doesn't seem to cycle at all. I'm mainly just not wanting to spend money on a new sensor if that's not wht it is. Thanks

 

[RadDsm]

You should zero out the SAFC and run 12psi on that 14B.

The narrowband gauge isn't really telling you anything, and you shouldn't be making any adjustments on the SAFC without knowing what your actual AFRs are.

 

[EvilTSi_97]

You should zero out the SAFC and run 12psi on that 14B.

The narrowband gauge isn't really telling you anything, and you shouldn't be making any adjustments on the SAFC without knowing what your actual AFRs are.

Agree with this 100%. Also, what are you using to check if the O2 is cycling or not? If you're using that gauge....probably not too accurate. Plus, just for the sake of argument, if you're maxing out your AFC at idle...it should run like complete shit from all the fuel being dumped in there. If everything is running fine, no real power issues, start putting money in the bank for a Wideband O2/Gauge

P.S. Ditching that AFC for ECMLink would do you a lot of good later on down the road when you start getting several modifications under your belt, if that's your plan.