madZ vs pcmforless
04-15-2007, 05:36 PM
#17
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Join Date: Jun 2003
Location: Carol Stream, Il.
Posts: 3,557
As was stated, a mail order tune might be right on or very close. Then again sometimes it's off a good deal. In my opinion, a mail order tune is suppose to be close enough so that you can drive the car to a shop to have it dyno tuned, without doing any damage to the engine on your way to the there.
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