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  1. R

    Help! Performance Chip

    Thanks Grand Daddy! That explains it. Yes I do have something behind my mirror. Now I know what that is. I bought the car a little over a year ago with 38,000 miles. I love it. So much fun to drive. Added a Corvette rear sway bar that bolted right up and it handles like it is on rails. I guess...
  2. R

    Help! Performance Chip

    Thanks Grand Daddy! By the way, what is that device on your trunk lid?
  3. R

    Help! Performance Chip

    Has anyone had any experience with this P7 Power ECU Engine programmer plug in performance chip? CADILLAC ATS PERFORMANCE CHIP - ECU ENGINE PROGRAMMER - P7 POWER - PLUG N PLAY | eBay
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