unless the a/f guage has a wideband sensor then its not going to be that accurate. you can have a better idea oh how rich/lean the car is running from the egt compaired to a non wideband.Peter Poland said:I am thinking that EGT and A/F monitor are almoust the same. I have K&N A/F monitor kit with separate o2 sensor - it is really fast. Do I need to double it by adding EGT????
Please advice, maybe any other gauge would be more important?