Thread: Hartge Tunes the 1M Coupe to 401hp
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      03-14-2012, 05:46 PM   #18
Beemw335
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Quote:
Originally Posted by Dan Parker
Are my eyes deceiving me or does the hp fall off above 5600 rpm's just like stock?
What do you expect? The stock n54 thrbos are small and run out of air at high rpm, a tune wont help, only bigger turbos will.
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