On my 01 ap1 I just recentley got both of my tanks filled up and went for a nitrous run and my afrs are low Tens? Without nitroua it's like mid 12s. My bottle pressure is around 1000-1050. I don't know what the problem is?? I know there is nitrous in the tanks. They where both filled at different places. So they are fine.

 

I also have a dyno tune window switch that activates at 5k and turns off at 8700rpm.

 

Wet system or dry?

 

Wet zex kit