Originally Posted by Muscle Master
at the cost of fuel economy, don't see the point of still having it active, the AFM
I dont know what their mpg's are after the sc install, ill have to look into it. but the other thing to keep in mind is that EPA estimates are just that.... estimates.
just like the 4th gens where people were getting 30+mpg in their cars, im sure that both the LS3 and L99 will get better than the EPA estimates