cabezzzdb8
BBS wanted
True but on a stock LS motor a 2.5 inch exhaust is too big, you will lose power, even on a stock GSR which has more compression= higher exhaust velocity a 2/5 inch exhaust is too big, the gas pulses will distord and bounce around because lack of velocity, but go aheadnexgenintegra said:i didnt say bigger means more power the point is to get the right size to make the exhasut pulses even and not distorted. you have to get them as even as possible with as little backpressure as possible. if you have backpressure the exhaust just has to do more work to leave the cumbustion chamber