3.5" mbrp downpipe question - Ford Powerstroke Diesel Forum
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Old 11-12-2011, 05:50 PM
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3.5" mbrp downpipe question

MBRP 03-06 Ford 6.0L Powerstroke Stainless Downpipe DS6206


Is the outlet on this downpipe 4"? Will I be able to weld it to the existing 4" pipe that my current 4" downpipe is welded to? If not what does the exhaust guy have to do to get the 3.5" downpipe to mate to the 4" pipe. Just so I have an idea of what needs to be done before I go in there. Thanks
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Old 11-12-2011, 07:46 PM
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It steps up to 4" after it turns under the truck.
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Old 11-13-2011, 07:11 PM
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Really? Some guy said otherwise on psn. here is a bump anyways.
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Old 11-14-2011, 01:55 AM
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Quote:
Originally Posted by darsey715 View Post
Really? Some guy said otherwise on psn. here is a bump anyways.
If I'm wrong get a 4" to 3.5" reducer and weld it to the downpipe. No big deal. But since MBRP make 4" and 5" turbo back systems I'll lay money that they include the step up to connect it all wouldn't you think.
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Old 11-20-2011, 07:07 PM
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actually i have a question about downpipes in general. For our trucks are aftermarket downpipes really that much if any better then oem, im not sure of what size the oem is off hand but i have an oem dp to mbrp 4 inch catback and im running catless. i just wanted to know if its a major difference or if i should spend my money elsewhere. thanks
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