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Recent content by Jrsfinest24

  1. J

    JB4 Misfires

    Hello all, I’ve had the JB4 on my 2019 Stinger GT for about 15,000 miles now. Car is at 21,000. I haven’t ran into issues until recently. At high RPM, I’m getting misfires and loud pops from my exhaust. I usually just run 93 octane. - 15,000 miles on performance plugs - Borla Catback -...


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