Hi guys, I just installed an AEM wideband A/F gauge in my CRX. It seems to work fine when I hit about 4000 rpm but it only flat lines between 1000-4000 rpm. i'm running a chipped ODB0 ecu with high compression pistions. I also just installed a Fields hyper SFC. Is it a case that im running lean at that point or something with the gauge. Any info is well appreciated.

 

i would like to know also...