Your best bet is to HANDS DOWN find a person that can tune your car in person. Every car is different. While a mail order tune might get close, they still have to tune it for safety or else they'd never sell a cheap. So they must be overly careful. You could get a spot on tune via a mail order chip but its VERY doubtful. What you posted, where you send in your mods list, and they send you a chip back, thats really a base line tune that should be FINE tuned on a dyno with a wideband. To get the most out of your car, you're going to have to spend some dough to drive to get to a tuner worth 2 shitz...then thats what you gotta do! You gotta pay to play!! Sh1t, I've got friends that literally, pay to FLY people in from across the country to have them come tune their cars....of course we're talking 1,200rwhp supras but still...tuning is SO important. Its not something you want skimp on.