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My 91'M3 loses HP in 5th gear! (archive)

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Posted by ///MFasT on July 18, 2000 at 01:54:41:

: Funny but nothing to laugh about, my M3 in 5th gear driving on the freeway loses horsepower when I reach 85-90mph. The rpm slowly drops but not that much. This only happens when I step on the gas pedal to the floor to over take a semi-truck or a slower vehicle. The only upgrade I have is a K&N replacement filter. What could this be? Thanks for your time.
///Marty
southern california




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