Reply to thread

Message: [QUOTE="FX44AU, post: 1307748, member: 22740"] I still need to do some sound clips of the big Donaldson..... the shorter one sounds just like the video on youtube of the 40" Donaldson on a 6.7L so it's kind of pointless to make one of it. It seems to me the 2015 has a bit less turbo whistle though. The Donaldson mufflers definitely reduce the hissing at idle but it is still there. What I find odd is that at idle the shorter muffler seems to quiet the hissing more than the longer one. While driving the longer one is definitely stock-ish quiet and the shorter one has just a slight bit more grunt than it did stock. In the end I went back to 4" straight on my personal truck. Still debating on what I want to do. I'm either going to install a Magnaflow 5" *** back exhaust on my de-leet pipe or go with a full 5" exhaust. At this point I'm kind of leaning towards just buying the Magnaflow kit. [/QUOTE]

Verification

Random media

110

gopro

Kazakhstan

E3C86D5E-47C5-49F5-8132-236D0B14FEDD

1454550_10200346642387597_1700296517_n

IMAG0529

new_turbo_006

2008 FX4

2005

maple_grove_013

Latest posts

Gauge cluster face plates
- Latest: crash86
- Today at 5:15 PM
6.0 Aftermarket
B
6.4 head gasket job cost
- Latest: bowhunter
- Today at 2:07 PM
6.4 Aftermarket
S
6R140 surging issue
- Latest: Smokin 6.0
- Today at 12:11 AM
6.7 Tech & FAQ
Won’t start
- Latest: psduser1
- Wednesday at 11:33 AM
7.3 Tech & FAQ
GT37 Turbocharger w/10 blade turbine, billet comp.
- Latest: hskfab
- Jun 6, 2025
Engine and Drivetrain

Members online

dieseljohn76

Total: 266 (members: 1, guests: 265)

Top