Good day I have a friend with a 2018 hellcat swapped 70 Challenger.

On decell they are getting quite a bit of exhaust pops.

Looking at the log they are happening at and below 16k and 35 and under Kpa the ecu is pulling timing. Is there a necessary purpose or can this be minimized safely?

Thanks
Dave

Road test backfire on decell 1600rpm and bleow.hpl
Max idle pn to 1100.hpt