Author Topic: What mufflers to use (Read 7331 times)

Cuda_451 · « **Reply #30 on:** March 20, 2016 - 08:24:50 PM »

Which give the most performance gains?

Bullitt- · « **Reply #31 on:** March 20, 2016 - 11:19:36 PM »

Which give the most performance gains?

insignificant ... real world test on a Pontiac 455 yielded .15 second difference in 1/4 mile
A low restriction air filter will do more for performance http://www.pontiacstreetperformance.com/psp/exhaust.html

Cuda_451 · « **Reply #32 on:** March 20, 2016 - 11:49:02 PM »

Thanks!

dfrazz · « **Reply #33 on:** March 21, 2016 - 10:13:38 AM »

Which give the most performance gains?

Straight through will always give you some (not much) HP and TQ gain than "S" type mufflers.