Originally Posted by Cyclone Perf.
Positive meaning over ambient? That's not the case at all. That's a very old myth I wish would die.
So, if I step down to 2" pipes and higher backpressure, my car will perform better?
Also, in case it comes up...bigger is not better and also higher velocity isn't necessarily better either. Pressure is a result of "resistance to flow". With exhaust you do want the exhaust pulses to keep moving down the line but trying to achieve the fastest pulse travel possible will hurt performance.
So would the 2 3/4 pipe be hurtful on our cars as far as over axle? The video says v6 mustang
. Their site says 5.0 and up.