Dale W Posted March 28, 2018 Report Share Posted March 28, 2018 Is anyone out there currently running these plugs? Have seen numerous articles and account of up to 3-5 HP gain from these. Can anyone verify these kinds of claims and gains? Getting to combine with a 65mm Ford Racing Throttle, 123mm JLT Intake, and Metco 2.60 Pulley on 07 GT500.....Any honest feedback would be appreciated. Thanks. Quote Link to comment Share on other sites More sharing options...
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