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Old 03-01-2013, 06:10 AM
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Quick question, I have a 4 inch exhaust dumped now, I can get a 4" mbrp downpipes from buddy real cheap and was wondering is there any benefits to fighting that thing in thee even for cheap?
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Old 03-01-2013, 11:33 AM
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down pipe wasnt hard to put in. yes it will help with egt's and hp a little
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Old 03-01-2013, 03:35 PM
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It isn't going to help with HP, it may help somewhat with egt's. A 4" downpipe is easier to install in an 05-07 truck than an 03-04 truck because of firewall differences. There is a stud through the firewall that you will have to cut off to get the 4" pipe in in your truck..
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Old 03-01-2013, 03:54 PM
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Like Mitch said...gotta cut the stud that comes through the firewall. I just installed a magnaflow 4" dual setup and it comes with a two piece 4" downpipe. I had to cut the stud off. However the first piece had to go in from the top of the engine then the second piece goes up from the bottom.
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