Ok, I've got a question about a tune. I have a diablosport tuner, which has worked pretty good until the last couple of weeks. I've started getting a MAF check engine light that keeps coming on, and I can't seem to get the MAF correct on the tune. It starts out at 0 on the steeda CAI tune and I have changed it to +1, +2, -1 and -2 as well as the 0. I think this problem has really just occured since I did underdrive pulleys. Anyways, I'm wondering if anyone has tried a mailorder tune from Brenspeed and if so, what mods did you have and how well did it work? The mail order tune from Brenspeed is $75. I have a guy locally that said he will hook it up to his system and custom tune it for $100. (I just don't know how well he will do) Or, if I wanted to save up some $ a proffesional custom tune will cost me $400. Right now I have a Steeda CAI, Borla catback exhaust, the Diablosport tuner, Steeda underdrive pully kit, and I just did Motive 4:10 gears. What are your suggestions/input?