Will I get better gas mileage with MagnaFlow Performance Exhausts?
Yes! In general, a better performing engine uses fuel more efficiently,all other things being equal (e.g. there is no variation in driving habits ) . There is no guarantee of better mileage however (Our mufflers are performance mufflers!).Diesel trucks using Magnaflow Performance Diesel will see the most dramatic improvements since that system drops EGT’s (that is, Exhaust Gas Temperature) over 150 degrees.