sho89mtx Posted July 7, 2017 Report Share Posted July 7, 2017 my car was a very good deal because of having close to 165,000 miles, but i'm going to my local shop and having them install the range colder plugs for my car that people say are needed to mod my car, the motorcraft SP-534's gapped at 0.30 and they suggested a full fuel injection cleaning system for an extra $200, is this worth it or not? What do u guys think? Quote Link to comment Share on other sites More sharing options...
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