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Do I need to change exhaust ?

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Old Sep 19, 2007 | 09:14 PM
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Do I need to change exhaust ?

Hi all - I am considering getting an SCT tuner and am wondering do I absolutly have to do exhaust ? Just want to live'en her up a little, I dont need to go to the tracks but I do tow a 10K lb camper from time to time, I have 315's and 5.5" lift low end isn't real good even w/stock tires. I would go with gauges though from what I have read. I appreciate any input.
 
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Old Sep 19, 2007 | 09:28 PM
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Definately get some gauges, EGT included. If you see that your EGTs are running around 1300+ you should seriously consider a more free flowing exhaust.
 
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Old Sep 19, 2007 | 10:00 PM
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Your motor will thank you that you did, and so will your pocketbook later. It's well worth the investment for the exhaust and real gauges.
 
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Old Sep 20, 2007 | 08:46 AM
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Will just a cat-back do?
 
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Old Sep 20, 2007 | 09:02 AM
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For the most EGT reduction a turbo back is better,
Nick
 
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Old Sep 20, 2007 | 06:44 PM
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Thanks for the info, are duals any better performance or just for looks, and with the SCT what is the most cost effective exhaust system?
 
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Old Sep 20, 2007 | 06:46 PM
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Duals are for looks. You won't get any performance benefit from them. Call Matt@spartan diesel tech. 1-828-606-3263 or email him matt@spartandieseltech.com. He'll be glad to answer all your questions and give you good prices.
 
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Old Sep 20, 2007 | 08:44 PM
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Won't the turbo back void the warranty?
 
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Old Sep 20, 2007 | 09:45 PM
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for your purposes, you will be fine with a cat back.
 
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Old Sep 21, 2007 | 02:30 AM
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Originally Posted by MIKE1646
Won't the turbo back void the warranty?
It can, depending on FMC's mood and the dealers mood. However the OP is installing a tuner, so warranty is not a problem for him.
 
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Old Sep 21, 2007 | 06:17 PM
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Go with the 4" MBRP stainless turbo back system, you won't be disappointed.
 
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Old Sep 21, 2007 | 08:28 PM
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Originally Posted by Rizvi54
Go with the 4" MBRP stainless turbo back system, you won't be disappointed.
I second that !
 
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Old Sep 22, 2007 | 11:48 AM
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Hey guys what is the difference in sound with the MBRP exhaust? Is it as loud as a straight-piped pickup? I ordered an SCT from Matt yesterday. I'm going to run 3 economy tunes so he told me exhaust should go on next before gauges. I'm all for installing one when I have the funds if it won't be too loud. I just don't want too much noise.
 
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Old Sep 22, 2007 | 12:15 PM
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I got the mbrp cat-back, at idle you can't hear it, when driving you need to have the windows open to hear it.
 
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Old Sep 22, 2007 | 07:21 PM
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The biggest difference you will hear is the whine from the turbo. As far as "rumble", you will only notice it under hard acceleration or with the windows down. I have no in cab drone whatsoever. There is a difference between loud and awesome sounding loud. I absolutely love my MBRP system.
 
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