Originally Posted by indy99gpgt
How is that? If you turn up the boost dont you need the hardware to support it? Ive always considered supporting mods to be the most important. You can make 22psi all day but if you dont have the fuel/injector to push the fuel, you are going to run lean. Most of the afr graphs i have seen of the high hp cars on here seem to start getting in the high 12's for afr. I always considered 11.5:1 to be the perfect afr for a FI car. I could be wrong but that is how ive always gone about modifying cars.
DI equipped cars can run leaner AFRs.