power programmer?
power programmer? 
It works pretty well.. Depends on how far your going to mod your car.. If you just do basic stuff (Lid and catback) where you'll never spend the money to dynotune the car it might be worth it. Once you start doing major stuff you'll want a Good tune to dial in the A/f.
for what those things cost, you might as well get a professional dyno tune. just wait until you buy all your basic bolt ons (intake and exhaust related stuff) so you only gotta do it once (until you get bitten by the mod bug, that is)
dont waste your money just get a REAL tune that way its spot on for the "exact" mods you have or do not have. the pre set programers usally boost timing and fuel curves and with evey car being different it rarely works in your benefit. plus some i wont name actully rely on your knock sensors to keep the mptor safe by adding to much timing and the knock sensors bring it back down so as not to completly destroy the motor.
