Originally posted by ZiviCase10287
if you have a Fuel Pressure Regulator the A/F ratio gauge is VERY helpful just to let you guys know, that think its stupid.
An FPR alone and an A/F ratio gauge aren't exactly the best tuning tools. For one thing, an FPR can only richen or lean out THE ENTIRE fuel map, and an Autometer-style A/F ratio gauge is only going to give stable readings at WOT. If all you want to tune is your static fuel pressure at WOT, then I guess they're useful.