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Hey all, just ordered an MBRP 4” exhaust “retains original cat” but wanted to straight pipe and remove the cat. Seems like nobody carries the straight pipe anymore. What is my best option for getting this exhaust installed without a cat? I found a 3.5” delete pipe online, will that work? I’m guessing Yes if the MBRP is designed to retain the original cat?
 

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2005 F350 Lariat Crew
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It'll work. What will happen is the 3.5 inch delete pipe will slip into the 4 inch exhaust piping. So get yourself 2 clamps or weld it. I'm trying to visualize how big the gap will be but I can't, so you'll just have to find out.
 

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Just go to an exhaust shop and have them flare a piece of straight pipe in your size for ya. Pay for said pipe, slide on, clamp...done deal!

-jokester
 
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