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backfire?

51OOO

By 51OOO,
in Engines & Forced Induction

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51OOO Enthusiast

51OOO

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guys i have a r32 gtst "limitted mods",just had it on the dyno and all seems ok they tell me, however i get loud POPPING/BACKFIRE noise coming from the exaust.The guys at the dyno place said my air fuel mixtures were spot on?Any ideas it normally makes it when i am off boost and at mid range revs,then sooon as i put the foot on the accelerator it pop/backfires??? :flower:

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