cornercarver240

why does everyone keep saying he needs backpressure. no he doesn't, backpressure is bad for performance. the reason it feels slower is because the exhaust is too big, it flows a very large amount of air but the velocity has been reduced a great amount, which reduces scavenging thus lowering torque. it can no longer expel the air out efficiently, and on a car that already doesn't have great volumetric effieciency this will be much more obvious. bigger is not always better, you need to find what's best for your application.