cappa
New member
I know this had been beat to death but I am trying to decide on either 5" exhaust with a muffler or 4" possibly straight piped. I want it to sound good but don't want super obnoxiously loud either. I have read some posts where guys claim that they lost throttle response with a 5" setup and was just wondering if there is any proof of this or if it's a myth. I would think any free flowing exhaust and a good intake should improve response and spool on a turbo diesel but just wanted to check with the experts. My only other experience with diesels was a 04 6.0 with 4" cool duals mbrp and their muffler and afe stage 2 intake and even on stock tune the response was night and day better than stock. I loved the way that truck sounded with the super raw turbo. I realize I will never get that same screaming turbo sound but just looking for the best setup for my new 15 6.7, thanks