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6.0L Performance Parts Discussion What has or has not worked for you?

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Old 09-14-2007, 07:21 PM
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help from vendors?

still looking for a 4 inch downpipe for my 04 ford 6.0 that will work with the 4 inch mbrp dual system thats on my truck. my goal is to have a true 4 inch from the turbo back. someone once said that mbrp made a 4 inch dp but i cannot find one anywhere. can you guys get me going in the right direction.
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Old 09-14-2007, 07:43 PM
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Do you have an aluminized system?
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Old 09-14-2007, 07:57 PM
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I know I can get a 4" Down pipe from Bullydog, but its aluminized. There is another company that makes a 4" Off Road system in 409 or Aluminized, and it has a 4" Downpipe. Its not MBRP, but it shouldn't be impossable to make it work.

I had the Bullydog true 4" system on my 05 for 6 months till the downpipe broke my up-pipe. It was just too tight in there for it. I have not tried it with this other company to tell if it would rub or not, or if it would line up to your MBRP system. I cant see how it would be too far off, but I honestly dont know.
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Old 09-14-2007, 09:43 PM
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the 4"downpipe is a real PITA to install because there is just not enough room between the turbo and the firewall. you will need to get in there with a port-o-power to make room. you should be fine with the 3.5" downpipe to the 4" exhaust. i doubt you're making 800HP and really need that extra half inch.
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Old 09-15-2007, 02:16 AM
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thanks guys i was thinking more of lowering egts and maby a little bit better sound than more hp- and of coarse you never know when i might decide to go all out for power(not likley though). mine is a 304 ss from mbrp. i was also wondering if they have a 4 inch cat delete pipe- i ordered one last year but it is 3.5- it is still new in box never been on truck my current cat has been opened.
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