do i really need 3" exhaust

Where do you get off introducing science into this discussion? Lol.
I wish more threads contained this type of information. Assuming it is accurate, it beats single data points and wild *** guesses that pervade some of these threads.

Lol I'm a soon-to-graduate mechanical engineering student so I guess it comes with the territory... There's nothing fancy going on with exhaust besides a few math equations, but knowing how they work is the key. You can learn from trial and error over several years building exhaust systems and engines but it's a lot easier reading a bit and then pushing buttons on a calculator lol. Don't get me wrong nothing replaces real-world experience though :thumrigh: