Just wondering, I"m logging my car with a wideband, the first run with a blind tune my AFR was in the 12.5-13.0 range & the car for some reason felt strong to me then it did after I tuned her, I made sure that from 3krpm to 6k she was about 13.0 afr & from 6k rpm I was anywhere from 13.0-13.5. Wouldn't that be a good AFR for an N/A setup? LMK what you big horsepower guys are shooting for in AFR & at what RPM what I should have, like I said, I think she felt stronger being richer.

Matt.

 

Each car is going to have a different point that it likes, but I believe the general rule of thumb is going to be to shoot for a WOT Air Fuel ratio of 12.8-13.2. Just my $.02