6.5 turbo upgrades
Diesel Enthusiast
Joined: Jun 2009
Posts: 110
Likes: 3
From: Fabius, NY
They really don't spool that loud due to low boost. There really isn't a way to make it spool louder.
There is a resonator in the intake that you can remove. Adding a 4'' exhaust will allow you to hear it out the tailpipe a lot more. But it wont ever sound like the new diesels.
There is a resonator in the intake that you can remove. Adding a 4'' exhaust will allow you to hear it out the tailpipe a lot more. But it wont ever sound like the new diesels.
Diesel Wrench
Joined: May 2011
Posts: 525
Likes: 12
From: Rehoboth, MA
5inch stacks a turbo master with a 3" down pipe and a chip. 
screams
---AutoMerged DoublePost---
Or you can put a really clogged and dirty air filter in and it will sound like a new diesel
screams---AutoMerged DoublePost---
Or you can put a really clogged and dirty air filter in and it will sound like a new diesel
Last edited by ebarresi5894; Jun 9, 2012 at 01:26 PM. Reason: Automerged Doublepost
Newbie
Joined: Jan 2013
Posts: 1
Likes: 0
I have a high psi spring holding my wastegate shut...the turbo controller arm broke in half (idfk how) but I just have a spring hooked onto my intake holding the lever forward, very hobo fix but it builds right around 12 psi of boost and it is louder than any 6.5 with a GM-4 turbo I've ever heard. Comparable to the turbo noise of a 6.0 powerstroke! It turns heads in town 
Diesel Fan
Joined: Oct 2012
Posts: 30
Likes: 0
From: The Catskills, NY
Ditch the POS stock turbo and get yourself a bigger better turbo. You will have more turbo then you can handle.
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klein444
Chevy/GMC 6.2L and 6.5L
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