I have turbo, Uprev, Innovate boost and AFR gauges.

The car was tuned and ran fine for a couple months, so I don't think this is a tune problem. However, looking at logs may reveal the problem.

The problem is that sometimes, the car looses power upon acceleration and the AFR spikes. I don't hear any pinging at all when this happens, but my wideband has hit as high as 17. I have calibrated the sensor and that didn't change it either. It seems much more related to throttle position than it does boost. I originally thought it was boost because as I accelerated hard it would do this, but when I accelerate slowly and watched cipher, it will usually act up about 1.30v on the throttle. Sometimes I can pass that if I accelerate slowly enough past it.

It seems to happen a lot when the throttle sensor reads about 1.30v. The car will stumble and lose power badly. I back off the throttle and it straightens up.

I have fuel recirc and aeromotive FPR. NO gas smell in the vac hose to the fpr and pressure at idle is about 43. I can't see it while driving since it's under the hood.

Can anybody help me out by looking at some logs or telling me what to look for?

I don't know anything about reading the O2 parts in Cipher because it's in volts. There are also lines that are digital, just 1 or 0. I don't know what they are indicating.

 

Do you have a nice smooth voltage increase while watching your throttle position sensor?
Are you able to graph the tps with Osiris? So you can see if your values suddenly drop off and then go back to normal?It's much easier to seeing it drop off during graphing than watching voltage values.
All of your ducting clamps tight? A false air reading could cause the issue too

Anyway you could check your fuel pressure during these driving conditions?I.e tap a FP gauge into your system so you can watch your pressure?

Sounds like a fuel delivery issue,or possibly a tps reading incorrectly.IMOP anyways

 

I took apart some intake piping the other day and replaced the cork tb gasket from kinetix with a graphite paper one I cut out. I also cleaned the tb. The cutting out has stopped but afr still goes high. I think I may have a leak in the exhaust before the afr gauge, which would give me false readings, inconcictent with how the engine is running.

On the tb voltage... I should do like you said and slowly increase the pedal while watching the voltage. I can probably Even do that without starting the engine, so it will eliminate other variables.

 

This sounds like the notorious lean spot a few people encounter with larger injectors. The problem is a resonance in the fuel rail that puts the antinodes of the pressure waves created by the injectors opening and closing right on top of the injector inlet, dropping pressure. The only fix is mechanical- you need to install another fuel pressure damper on the rail.