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thats what Jet does though. you send it in, they reprogram and send it back next-day shipping. They recalibrate it to have the power thruout the entire band and reprogram the air/fuel, spark,and boost for turbos and whatever else based on mods and mileage. . Most of the little chips off ebay are little resistors you can get at radioshack.
^^Its impossible to reprogram a 03-05 PCM, and fo the 00-02, Howell offers the AF/x performance PCM's. Whatever you do, never buy a JET Chip, or Ebay Chip, or any kind of performance chip.
I had a jet chip in my 1st gen neon found it that was crap thats why I went with a hahn stage2 turbo with other mods . I would try over on srt forums for they have a few places on there for a cf spoiler and trunk.