this is something all you people with the hesitation could consider....i just replaced my injectors, and i dunno if its the more cc's (i doubt it) but my old injectors were real dirty, at the filter up top and a lot more at the bottom....so try cleaning out your injectors, and see if it helps...i can now gun it in 5th at 2-3k rpms, and it just starts pulling w/o a hesitation