from everyones experience... which makes the most power? i am suspecting the richer AFR will yield a little less but we're not talking more than 5 rwhp...right? i have an opportunity to dyno tune my car real cheap but i will only have time to flash my computer once since this will be on a dyno day and i need to know which target AFR i should shoot for. thanks

 

With my old GTP set up my car made the best power at 13.2..