air fuel ratio gauge

[poweredx2]

My a/f ratio gauge will go blank when I engage the nos,it only happens with the 100shot zex the first time it happen my vacuum line to the fpr had blown off it reads on motor but not on the spray,I think I may need to replace my fpr its happening more now than before and I have notice the smell of gas every so often.PLEASE HELP

[AFBeefcake]

My air fuel ratio gauge goes blank when i'm at more than 3/4 way down on the gas. I have not found the a way to fix it yet.

[poweredx2]

It seem like we have a common issue except you didn't mention whether yours did it on motor or nos mine will do it on the spray,but the car still is pulling I think it may be my fpr or too much bottle pressure.

[AFBeefcake]

I don't have NOS in my car.