I called Saleen. According to the person I spoke to, the software will re-program the PCM computer. If you have changed your MAM, then the Powerflash won't work. It will recognize changes made to the throttle body, R&P gears, exhaust, and pulleys. I did not ask about a change in heads, intakes, or S/Cs. For $200, it seems to be a good deal for 20hp. It all depends if you're going to only add on basic bolt-on mods. I think I'll go over to the Corral to see the discussion Snakedriver mentioned.
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