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superchips 91 tune
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  1. Multimedia
    Bro-in-law putting my 2009 PSM G8 GT through its paces a few days after Borla Catback and Rotofab CAI installation by Haddad Motorsports. http://www.youtube.com/watch?v=TQsSnh7vmno
  2. Superchips
    I recently installed Pypes axelbacks and tuned my car with the superchips 91 octane tune (So Cal has no 93 octane). I love the pypes and the tune but at highway speeds between about 1800 and 2000 RPM (70 to 75 mph)I get terrible drone and have to shift manually shift to 5th gear. Is there a...
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