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#3: 11-14-2012, 12:01 PM
 
 pfoyle
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Title: Contributing V.P.
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Location: Medford, MA
Car: Brentuned '10GT-RacerX TMIC, Invidia TBE
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I am NOT an expert of any sort...

Do you have something you can use to read any engine fault codes? Could be a misfire in one/some of the cylinders (which could be caused by bad spark plugs or bad gas or faulty ignition coil)... there are lots of things it could be... best bet is to check the ECU with an OBD reader and see if it gives you any clues...