Chevy/GMC 6.2L and 6.5L Discussion of Chevy and GMC Trucks with 6.2L and 6.5L Diesel Engines

straight pipe?

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Old 10-06-2010, 11:26 AM
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Default straight pipe?

I have a 1996 1-ton dooley and I bought a 4 inch diamond eye exhaust for it from the the turbo back.

I don't really like the sound of it, anyone think I should just take the muffler out and sraight pipe it? anyone have theirs straight piped?



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Old 10-06-2010, 11:43 AM
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there not going be diff in the sound

the muffler is just like straight pipe

i have the same exhaust all i did put muffler on backwards
 
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Old 10-06-2010, 11:45 AM
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mines straight piped with no cat an no muffler sounds nasty
 
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Old 10-06-2010, 11:47 AM
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Cummins got hole diff sound then 6.5 do
 
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Old 10-06-2010, 12:11 PM
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Default Re: straight pipe?

Do it. 6.5 sounds awesome straight piped. I had 3" straight with 4" tip. An un crinkled x over makes a sound difference too.

Sounds like a bbc wound out and a diesel at idle.

Sent from my Droid using Tapatalk
 
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Old 10-06-2010, 05:35 PM
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i got a dyno max resonater with my diamondeye which is pretty close to straight and its not super loud. sounds nice.
 
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Old 10-06-2010, 07:28 PM
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mine has a 3 inch straight pipe, its loud when i want it to be but its fairly quiet cruising down the road. straight pipes sound good on all diesels IMO
 
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Old 10-11-2010, 08:16 AM
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I have a 94 Dually low rider 6.5 with straight back no muffler.

That thing sounds nice, your hear the turbo nicely and it has a deep and clappy sound.
I love driving through street with buildings close to the street echoing back at me.

But its not so loud that it bothers you in the cab. But mines a dually and kinda hides the pipe behind the big fender and tires back there, so it might be louder in the cab if yours isn't a dually.

I would get rid of the muffler and if not done already, get a down pipe thats not smashed all to hell like the stock one. Get a 3 to 4 inch round down pipe and it will improve power too.
 
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Old 11-16-2010, 11:02 PM
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i straightpiped mine and i love it i had my homemade tm turned up and when i left work from straightpiping my truck i looked at my boost gauge and it was sittin on about 20 to 22 psi
 
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Old 11-17-2010, 06:12 PM
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Originally Posted by luke22494
i looked at my boost gauge and it was sittin on about 20 to 22 psi
you will be buying new headgaskets soon or worse a block if you keep it up that high
 


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