i put on the bonez racepipe and i have 2 freeflow mufflers..everytime you rev/shift anything it pops/backfires as if its shooting flames. is there a way to make it stop popping everytime even if you shift at like 4k rpm?

 

Not really any way to make it stop that I know of. Rotaries love to backfire & will even more when you open the exhaust up. You can put 3 main cats on and 2 stock honda civic mufflers on if you want, but don't think you wanna do that