o2 sensors make a big difference too, all four of mine are going to be replaced soon. right now i get from 20-25, a while back i got around 29, this is all mixed driving

98.5 Black SE ATX S&B filter, SVT MAF, optimized SVT TB, mesh grille, removed orange reflectors, painted rear reflector, gutted pre-cats, optimized SVT LIM, 19lb injectors, resonator removed cant afford an svt but lookin for 1 in nc