Quote:
Originally Posted by Navy Horn 16
This is a really good watch for the 2.5 vs 3 inch exhaust questions:
https://www.youtube.com/watch?v=_PVXvHkr-Vs
It's fairly definitive proof that the whole "lack of back pressure kills torque" thing is a myth.
One option would be to run 2.5 inch exhaust for your "running around time" time, and have exhaust cutouts for your track time. |
ive seen & read quite a few tests on exhaust pipe sizes & chose the 3" based on future power upgrades, but again ive heard guys say 2.5" supported their 600hp engines.
im not concerned with the ex pipe size or back pressure created by pipe size & mufflers etc, im more concerned about header primary tube size for my power level & secondary, the scavenging effect. the pypes exhaust system actually tucks up nicely & doesnt hang down too far so changing to 2.5" & dumps wont gain anything for my situation. its all in the headers & how far down the lowest tubes & the collector flange hangs with how low the car is.
guess i just need to decide between new headers or changing ride height.