Straight Pipe Cummins

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Jan 20, 2010 | 08:51 PM

DieselFreak556

Thread Starter

Newbie

Joined: Jan 2010

Posts: 6

Likes: 0

From: San Antonio

Straight Pipe Cummins

Hey would straight piping my cummins make it loose power or back pressure? and if i do, what pipes would be best. Mbrp? Flowmasters? or Diamond?

Jan 20, 2010 | 08:59 PM

captain_stabbin

Diesel Wrench

Joined: Aug 2009

Posts: 919

Likes: 27

From: houston, tx

actually, it would runn a little better an have cooler egt's!!!!

Jan 20, 2010 | 09:11 PM

0sneed1rr

FormerVendor

Joined: Feb 2009

Posts: 151

Likes: 9

From: upper lake, CA

if you straight pipe it go 5 inch, I liked my 4 inch at first but now I hate it, way to loud and raspy the 5'' has a deeper sound and not so raspy

Jan 20, 2010 | 10:52 PM

Uncle Bubba

BOMBARDIER

Joined: Mar 2007

Posts: 12,854

Likes: 1,112

From: Illinois?

Here's some good discussion on this same topic. https://www.dieselbombers.com/5-9l-2...-pressure.html

Jan 24, 2010 | 05:34 PM

MudTJ

Diesel Fan

Joined: Dec 2009

Posts: 16

Likes: 0

From: Bayville, NJ

I lost a ton of Low End torque when I put a straight pipe on, I ended up putting a muffler on again. It was most noticeable when towing.

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