5in MBRP exhaust

bigjohnspowerstroke · #1 (**permalink**) 10-18-2007, 04:13 PM

I am about to install a 5in MBRP cat back exhaust on my truck tomorrow. I was reading the directions and i saw that is said you have to remove the spare tire and it may not fit back in its spot. Can anyone tell me if the spare tire will fit back under the truck???

***vitalidle*** · #2 (**permalink**) 10-18-2007, 04:17 PM

Seems to me I have heard that, but Im not totally sure.

holleywood · #3 (**permalink**) 10-18-2007, 05:27 PM

why run a 5 inch cat back? Probly would be better to run a 4 inch back from Farm Boy then just get a 6 inch tip

04TurboStroker · #4 (**permalink**) 10-18-2007, 05:43 PM

I ran the 5" a while back. What you have to do to make the installation much easier for you is remove the spare tire, then have a friend help you squeeze back in the tire once your done. You will have little spaceing b/w your spar tire and shocks! But over it will sound GREAT!

**Marty** · #5 (**permalink**) 10-18-2007, 05:50 PM

I'd go 4" turbo back w/ a 6" tip!

04TurboStroker · #6 (**permalink**) 10-18-2007, 05:52 PM

One more important thing. If your full size spare has good tread, forget it, the pipe will just melt the rubber off. So if installed right you may not have any problems. Either way lose the spare or install the exhaust.

~CrazyDiesel~ · #7 (**permalink**) 10-18-2007, 06:09 PM

Yeah, with my 5" I've got about 1/3" between the tire and the exhaust, and about 1/2" between the shock and the exhaust, it's a tight fit. Granted, I shouldn't have gone with 5" with my set-up, but I wanted the extra deep sound, you know? The spare is a tire that's got very little tread on it, and I bet if it had lots of tread it'd be melty like you say.

It all depends on your preference though.. With the 5" with 4" DP, the exhaust rattles on the transmission corss member every once and awhile. If I had to do it all over, I think I would go with the 4"

farmboysdiesel · #8 (**permalink**) 10-19-2007, 07:12 AM

5in turbo back system would certainly work but a 4in system is sufficient.

ncbowhunter · #9 (**permalink**) 10-19-2007, 04:54 PM

hey guys i found myself a muffler delete pipe the other day and was wondering how much different the sound will be. i have the 4 inch duals with cat delete and the mbrp muffler now. dont mean to steal the show just curious?

jostaman · #10 (**permalink**) 10-19-2007, 04:59 PM

what if you dump before rear axle then you not have to lose spare at all.

this might help
http://www.powerstroke.org/articles/...all/Page1.html

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