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plugs tr6 tr7ix idle

  1. TR7IX plugs

    Engine/Supercharger
    I light of resent threads and where the cars is at now power wise Im considering switching from TR6 plugs to TR7IX plugs. Is there any reason I shouldn't use these? When I change them I wont be installing anything else so I should be able to notice any idle or drivability issues. Edit for...
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