well, ive messed with it a few times and doing big changes scare me without any help. ive done it on the stock/near stock performance tune and it seems to have some more power in the upper band but when i put it back to stock it seems to have a bit more down low power. does this seem right or is there anything i can do with it seeing my car is pretty much stock? and no i dont have money for other upgrades right now cause im piss broke