from what ive read you can safely go to about maybe 8000 but is definitely not recommended most say no further than 7600 although you wouldnt really make any more power. i think 7500 would be okay. one day i was messing with things and i did 7400 i think and why the current gear say 1st isnt really gaining much up there the shift to 2nd sure is nice lol
HATCH NATION #56
2004 Sonic Blue SVT!!! 2.5" orp and flex and trubendz catback, toms tune, steeda sts, custom intake, good ol motocraft copper plugs!