Ive got 4 into 1 extractors and a straight thru 2inch pipe with a single straight thru muffler (NOT CANNON).
Crackles, pops, farts and shoots flames on mega over run.
If your on a budget, google "keybangers". Do a few of them and it should make a hole in your rear muffler. Mine had a hole the size of my fist in the bottom and later found it had split the seam on the top. AND IT SOUNDED TOUGH :dance: