Straight pipe or muffler???
- Thread starter Bkap725
- Start date
Depends what your comfortable with for exhaust noise, I went strait to a dp back 5", but I wanted the noise
Diamond Eye and others make a down pipe. It is not needed unless you do a lot of heavy towing or until you upgrade the turbo. A five inch system with the muffler will still drone at certain speeds and will make it hard to talk on the phone or drive long distances if the drone occurs at your cruising speed. I recommend a four inch stainless system with a muffler. The mufflers are not restrictive and don't reduce power. Sound is still good with the muffler outside the truck. If you want noise go with the straight pipe.
I've had straight and muffled, it is really personal preference.
I liked the sound of the straight but the drone was too much at times. The muffled isn't nearly as loud but I can hear everyone in the cab that is trying to talk to you
I liked the sound of the straight but the drone was too much at times. The muffled isn't nearly as loud but I can hear everyone in the cab that is trying to talk to you
What engine do you have? LB7's sound a lot different and may be louder in the cab. I have a 4" Silverline straight on my LLY and it isn't that bad imo. I had the muffler on at first and it was really quiet. I like it loud but it's not obnoxious in the cab at all. The people with open windows in other cars however when I'm WOT….I'm sure they aren't too happy. They usually earn it though, lol.
I've heard that 5inches too early from the downpipe may result in a lack of back pressure. But thats just what I've heard
I like it. I had to cut some portions of the pipe to make it fit underneath my truck (I have a crew cab standard box). Though I kind of wish I just stuck with the 4inch exhaust.
Forced induction and normally aspirated different things. You don't want backpressure with a turbo exhaust.
With the twin setup on a built engine I ran a 5" straight pipe. At highway speed it was too loud in the cab, very annoying. A week of that and it got a muffler.
i would go 5" so you have the breathable capability for future add ons. and it sounds awesome, i had 5" MBRP with their muffler, i was able to keep it kinda quiet when i needed to be but when you open it up it is like the muffler is not even there:thumb::thumb::thumb::thumb::thumb::happy2:,
my current truck came with 4" Gibson kit, will see what it sounds like when i get the dpf off again , but may go back to the 5", it might all be in my head but i love exhaust tinkering.
my current truck came with 4" Gibson kit, will see what it sounds like when i get the dpf off again , but may go back to the 5", it might all be in my head but i love exhaust tinkering.
The highway drone can be pretty annoying. And the inch difference between 4 and 5 inches wont make a difference performance wise unless youre making big power
I have the Diamond Eye 4" stainless on my 05 LLY (long bed). I did not use their muffler. I used the Magna flo muffler. It really takes the drone out. I would highly recommend this set-up. Especially if the wife is in the cab.