last time i got dynoed i dont think the dyno was accurate at all. i had a gm stage 2 tune, 42lbs injectors and a 3 inch pully, f5 cai and a greddy evo2 muffler.
and it said like 260 but that is too high. now i have a 2.85 pully catless dp and a megan racing driftspec cat back exhaust. pretty soon i will be rocking 60 lbs injectors and a new tune