Is there much of a sound difference between a 4" and 5" turbo back exhaust w/o muffler on a 6.7L? Looking to get new exhaust this weekend, was curious to if theres a different or how much considering its about $100 more on the price tag?

5's like getting in between 2 raccoons fighting over a bag of feed. its bigger then you think :w2:

"Tiny" had some mechanical harshness-notes that would echo thru the pipe until I found a cheap 4-in I.D. glasspack. Kept the rumble and turbo-whistle, but lost that mechanical echo.

I have a 12 ram with straight 5 with 8 inch tip sounds awsome!

I would swap a 12 valve manifold on a 5.9 cr if i had one. On a 6.7 i probably wouldnt just to keep the factory ex-brake.