I know when you are tuning on a dyno, it's best to use 4th gear to get the most accurate horsepower measurement.
But I'll just be tunning my a/f ratio. Do I still need to use 4th ? Would gearing load effect the a/f ratio ? I'm thinking it shouldn't.
I'd rather do a 3rd gear pull on the freeway than a 4th gear pull... yikes .
