Depends on the thickness of the stack, especially on the 24s, they'll drone like a ****. Straight 5" dp to 7" or 8" stack. But personally, before I got my exhaust, I just cut from the resonator back off the stock and it roared like a semi, badass sound.

 

straight 5 inch to 7 inch tip is pretty loud. silencer ring gone and bhaf.