4" exhaust: put it on, got some questions

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Jun 26, 2011 | 05:12 AM

#11

Highlander

Diesel Enthusiast

Joined: May 2009

Posts: 105

Likes: 2

Quote:

Originally Posted by ebarresi5894

hi, i just put a 4" on my 6.5 from the downpipe back and i was wondering if anyone else had done this and had any positive or negative outcomes.

let me know please!!

What is the downpipe..

Jun 26, 2011 | 05:35 PM

#12

jasoncooperpcola

Diesel Fan

Joined: Jun 2010

Posts: 30

Likes: 0

From: Pensacola FL

I put a 3" downpipe just to clear the frame and 4" pipe the rest of the way. My mpg stayed the same. And no i am not driving it to hear the turbo.

Jun 26, 2011 | 11:15 PM

#13

Crazy

Diesel Bomber

Joined: Sep 2010

Posts: 1,322

Likes: 51

From: Reddick,Fl.

Quote:

Originally Posted by Highlander

What is the downpipe..

DP is pipe from turbo down to the cat

Jul 2, 2011 | 03:14 AM

#14

stinkyD

Newbie

Joined: Jun 2011

Posts: 8

Likes: 1

dont replace the down pipe, straight pipe it all the way back
you will loose back pressure and use a bit more fuel but will indeed sound good, and you will be happy- people behind you will be sad!!haha