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Old 08-12-2013, 05:22 PM
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stock engine/truck exhaust question

2003 F250 crew cab 4x4 7.3 auto.......bone stock except the 6637 air filter. If I were to consider removal of the factory exhaust system, and install a 4" turbo-back system, would there really be any gains? My brother has a 4" MBRP system he wants to sell me...he mistakenly bought it for his '97 and he offered it to me for about half of what he paid for it.
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Old 08-12-2013, 05:39 PM
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If emissions are not a problem for you i would take it. it can increase fuel economy a little and you might have a small increase in power. plus it sounds mean. I'd also get a 4" downpipe
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Old 08-12-2013, 05:41 PM
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just read your post again. sounds like it comes with the downpipe
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Old 08-12-2013, 05:42 PM
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if you ever chip it it will also help with egts. i would jump on it, mbrp systems are good quality
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Old 08-12-2013, 06:52 PM
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Quote:
Originally Posted by TSbeanspowerstroke View Post
if you ever chip it it will also help with egts. i would jump on it, mbrp systems are good quality
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Old 08-14-2013, 04:33 AM
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Untill you are pushin 400 hp or more the stock exhaust is fine. The stock muffler is the bottleneck. Straight pipe replacing the muffler is very cost effective.

The tone of the exhaust from the larger pipe is the only real advantage at your stage of the game and for half price it's a heck of a deal. If you plan to add a chip it might be marginally worth it...

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Old 08-14-2013, 11:17 AM
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the stock downpipe is pretty restrictive too!
it looks tiny compared to a 4 inch downpipe.
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Old 08-14-2013, 11:20 AM
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If you don't want it, let me know what he wants for it lol.
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