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perryo91 Given the other discussion here I'd say if your tune isn't a stage 2 then it might not be aggressive enough to warrant the colder plugs N20 plugs. The fact that when going from stock to stage 1 you mentioned the hesitation made me question but you're using a jb4 which I'm not sure which the stg 1 target numbers are like but even when my n55 plugs weren't holding up and I went from my custom tune (gives me an additional ~100 hp / tq over stock), the BM3 stg 2 OTS map made the car feel better as its more relaxed than my custom tune being more aggressive.
What numbers are you putting out with your jb4 on the stg 1?
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