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Old 05-01-2013, 05:41 AM
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Race Exhaust

I'm on the fence about which exhaust system to go with on my 6.7. I would like to keep the truck "relatively" quiet, and I'm wondering about the decibel level if if I install just a delete pipe. I thought about putting a 4" straight-through muffler in with the delete kit.

I'm also considering going with a 5" exhaust with a muffler, to get a deeper tone, and not be "straight-pipe" loud. Opinions?
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Old 05-01-2013, 07:37 AM
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its loud with just delete pipe in my opinion. i added a donaldson muffler to my delete pipe and now its very quiet.
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Old 05-01-2013, 05:58 PM
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I have a 4" delete pipe and stock tail pipe section and cruising down the highway at 15-1600rpm is no louder than stock that I've ever noticed. Only time I even hear the exhaust is when you're getting up to the 2000rpm range and higher.
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