can anyone give me any insite on why this truck is backfiring at the top of first between 2500rpm and 3200 at 100% throttle bk 2 1-29-21.hplbad backfire race tune 1-29-21.hptit backfires 2-4 times then when i shift into second it goes away truck is stock engine with FMVB transmission i have a sligtly bigger AFE bladerunner turbo