4 or 5"

calidies · Nov 12, 2016

How would you describe the difference between a 4 & 5 inch turbo back. Newbie sorry

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heavydoc · Nov 12, 2016

The exhaust pipe is either 4" in diameter or 5" .

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dillpurdy92 · Nov 12, 2016

1994.5 CCLB zf5

calidies · Nov 12, 2016

heavydoc said:
The exhaust pipe is either 4" in diameter or 5" .

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Obviously. I meant the sound and differences in how they work

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96F350KID · Nov 12, 2016

www.youtube.com

I don't think a forum consisting of text can tell you how something sounds.

heavydoc · Nov 12, 2016

Loud and louder.

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DocBar · Nov 12, 2016

There is no performance gain from a 5" over a 4" at the HP levels most people are at. A 5" downpipe will NOT fit unless you bash the hell out of everything, including the downpipe. 4" is what I would suggest you go with, unless you're running close to 4 digit rwhp. The saved money can be put towards a set of headers. They sound badass.

D66stroke · Nov 12, 2016

I had 4" with a long 6" tip on one of my 97's, it would get this loud sweet spot crackle at like 2500rpm (3:55 gears) and just all around sounded good. I have a friend with 5" on his 02 and it sounds good at lower rpm but at wot it doesn't sound much like anything, just noise

Magnum PD · Nov 12, 2016

What year?

VA Vince · Nov 13, 2016

I have a 4" MBRP and it is pretty loud, sounds good though.

BS Hauler · Nov 13, 2016

I have a MBRP 4 inch turbo back on my 6.0 and my 7.3 I started out without the muffler pulling my horse trailer and they were ready to kill me. It didn't take long to put the MBRP mufflers on both trucks. I was not going to listen to that much drone for 850 miles at a time when we go on our horse vacations.

emev0l · Nov 14, 2016

I made 666rwhp threw a 4" exhaust with a muffler

Strokersace · Nov 14, 2016

I've had both on a 7.3. Mufflers and straight pipe on both. As I've gotten older, there's no question the mufflered 4" is the way to go on a 7.3. The 5" straight was awesome, loud and deep, but the constant rumble and drone got to me. After years with that setup, I'm now currently putting a 4" with muffler back on it.

No power gains, just sound.

VA Vince · Nov 15, 2016

So, how hard and what price would it be to add a muffler to a 4" turbo back MBRP? I only ask as I am trying to find an inspection staition that will pass without a muffler and get the troopers off my ass.

TARM · Nov 17, 2016

The cost of a muffler clamps and whatever saw or cutting wheel you use to place it.

Really with the open straight thru design of the mufflers you can get there's no reason not to run one to keep it legal.

junglejoe · Nov 17, 2016

4 inch down pipe into a 5 inch all the way to the back and love it.

calidies · Jan 28, 2017

junglejoe said:
4 inch down pipe into a 5 inch all the way to the back and love it.

Did you buy the downpipe and exhaust separately or did it come complete

97 f250 7.3 xclb E4OD
I also don't know **** about **** so teach me, respectfully.