How good is the stock exhaust? - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 7 (permalink) Old 02-20-2008, 01:29 AM Thread Starter
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How good is the stock exhaust?

Well Im not planning on going crazy with my brothers truck. He wants a PPE hot and thats it. He isnt into racing or anything of that nature. He doesnt tow more then 8K lbs and only a few times a year. Just wondering if its really neccasary to get a aftermarket exhaust with what he is trying to do.

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post #2 of 7 (permalink) Old 02-20-2008, 01:45 AM
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It would be beneficial to get a good exhaust. Just to remove restriction, helps the flow properties with the new programmer.

Tony

2001 GMC 2500HD EC/LB, 4X4. A few go fast goodies. 540hp/1107tq Danville Dyno 11/09, Kennedy 40% injectors.

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post #3 of 7 (permalink) Old 02-20-2008, 02:18 AM
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I would add an exhaust if I'm adding a programmer. Helps keep the EGT's down, especially when towing. An EGT gauge is a good idea, too.

BTW, dont let him go over +100rwhp on a stock tranny.
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post #4 of 7 (permalink) Old 02-20-2008, 04:35 AM
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If cost is a factor but noise isn't cut out the muffler and replace it with a piece of pipe. If you don't get in the throttle too much it isn't that loud, but if you hammer on it...

I have pics if you want.
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post #5 of 7 (permalink) Old 02-20-2008, 09:12 PM
 
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how good is it juts to use stock pipe and stright pipe it i was thinking of doing that my self
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post #6 of 7 (permalink) Old 03-10-2008, 02:30 AM
 
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Aftermarket exhaust beneficial?

Using the stock exhaust with the muffler cut out is an improvement over stock, but a very small one...Exhaust costs a bit, but it will bring EGT down (I have gone both routes). If you are planning to use a chip, its really better to go with a good 4" exhaust.
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post #7 of 7 (permalink) Old 03-12-2008, 03:07 AM
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If you wanna be cheapo, a straight through muffler or straight pipe will be under $100 by replacing the stock muffler only.

Another cheap route is a 5" single stack striaght pipe from the turbo back, this is what I did and flows nice, but its a little loud.

A cheap 4" exhaust is less than $300. Soo let him make the call.

The PPE does get hot but not long enough to do serious damage.

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