Air Fuel Ratio anomaly

[Speedy3]

I was wondering if any of you engine geniuses can tell me why the calculated B1-S1 AFR is peaking out at 29.25 when the engine isn't under load? Look at the attached graph. The overall AFR looks good (I think). I went through gears 1-3 one at a time going almost WOT in 1st and 2nd, then WOT in 3rd. Also, note the fuel pressure everytime I punch it. It drops momentarily, which causes a boost stall everytime i Punch it.

Btw, I haven't gotten the reflash yet.

 

[Jays07MS3]

I was wondering if any of you engine geniuses can tell me why the calculated B1-S1 AFR is peaking out at 29.25 when the engine isn't under load? Look at the attached graph. The overall AFR looks good (I think). I went through gears 1-3 one at a time going almost WOT in 1st and 2nd, then WOT in 3rd. Also, note the fuel pressure everytime I punch it. It drops momentarily, which causes a boost stall everytime i Punch it.

Btw, I haven't gotten the reflash yet.

Thats normal. No fuel is being burned during zero load conditions so the sensor is reading mostly air.

Similar topic vvv
http://www.msprotege.com/forum/showpost.php?p=3510622&postcount=48

 

[nig3]

totally normal when you let off the gas dude.