bumpinwheels95

hey guys i was on the highway the other day n i was racing an sts caddy n i was shifting at 6200 n all of a sudden booom it was the loudest backpressure ive ever heard

its neva done that b4 however i just want to know if u guys eva got backpressure like that before n should i just ignore it>?

straitwangin

u mean loudest back fire?

bumpinwheels95

it sounded like my car blew a head gasket or sotin but it was only packpressure have ur cars eva done that

4.698GT

It back fired. Backpressure is the resistance by mufflers and cats to leave the motor. Backfiring is usually caused by a load of gas in the higher rpms and exiting through the exhaust valve, or something along those lines.

bumpinwheels95

so nothing to worry about right cuz im going to my first drag race friday at new england dragway

4.698GT

Yea, the backfiring is because of you lack of cats and the straight pipes that you have.