Turbo-back straight: 4" w/tip vs. w/out tip, vs. 5" w/tip... - Ford Powerstroke Diesel Forum

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post #1 of 10 Old 02-19-2013, 07:57 AM Thread Starter
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Turbo-back straight: 4" w/tip vs. w/out tip, vs. 5" w/tip...

I'm leaning toward MBRP turbo-back straight (aluminium) installer series. (mild weather in my parts) Going on a 99-04 7.3l

Wondering the differences in the 4" MBRP turbo-back package with a tip vs. no tip (does it change tone or just for eye candy?) vs. the 5" MBRP turbo-back again with a tip vs. no tip.

Please chime in on the diameter of the downpipe's of these kits. Does a 4" have a true 4" DP or is it the 3.5"? I assume the 5" has a 4" DP?

Thanks!
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post #2 of 10 Old 02-19-2013, 08:34 AM
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Im not sure about 7.3s but mbrp is a true 4" DP on my 6.0
5" i believe is just a deeper sound and as far as tips go, the bigger the better! those 10" tips usually add 20-25 horse and 40+ TQ

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post #3 of 10 Old 02-19-2013, 08:47 AM Thread Starter
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Quote:
Originally Posted by mackattack6.0 View Post
...and as far as tips go, the bigger the better! those 10" tips usually add 20-25 horse and 40+ TQ
I think you're confusing the tips with the Metal Mullisha stickers :-P

I saw that with an Eagle Eye turbo-back, they only come with muffler? So you have to buy the delete pipe separate?
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post #4 of 10 Old 02-19-2013, 08:47 AM
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Re: Turbo-back straight: 4" w/tip vs. w/out tip, vs. 5" w/tip...

All dp are 4" and the 5" pipe adds a deeper tone I personally love the deeper tone and with any tip it will change the tone some but mainly just for looks

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post #5 of 10 Old 02-19-2013, 08:54 AM Thread Starter
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I'm a little confused because I've read a few posts that said they had a 4" MBRP but they're DP was 3.5"...

I def. want the 4" DP.
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post #6 of 10 Old 02-19-2013, 09:13 AM
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Yea different kits will be different, but I'm pretty sure it's a 3.5 inch do on that kit....just have to make rue before ya order it....tips are mostly for loos won't change the sound enough of u to notice it...and I always tell people to get the 5 inch kit just cause u will want it later so just save the money and go big first...
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post #7 of 10 Old 02-19-2013, 10:15 AM Thread Starter
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Received an email from sales guy over at Beans in response to DP size for Eagle Eye and MBRP 4" and 5" turbo-back kits:

"All 94-03 7.3 exhaust systems will come with a 3.5” downpipe to clearance the cab and then flare out to the desired size for the rest of the exhaust (whether you choose 4 or 5 inch)."

Does this sound right? I'm not looking to buy a separate 4" DP.
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post #8 of 10 Old 02-19-2013, 10:44 AM Thread Starter
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Received another email from sales over at Beans; issue resolved.

"I’m sorry I made a mistake in the last email. The 94-97 come with a 3” downpipe, the superduty’s come with the 4” downpipe."
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post #9 of 10 Old 02-21-2013, 04:02 PM
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I actually just installed the 4" mbrp installer series earlier this week on my 02 7.3L ccsb. It's a true 4" dp and a great sounding system from outside the cab. Interior nose hardly changed at all. Depending on your cab/bed configuration, the only thing you will need to modify will be extension tube just before the muffler. CCLB will use the whole tube, scsb will not use it at all, and all others cut to fit. For some reason, my neighbor and I couldn't get the dp installed without removing the transmission cross member and some subsequent "massaging". Whether this was due to my manual tranny, 4x4, or our inexperience with this particular installation, I can't say. I spray painted the system with high temp black paint (1200deg) and the chrome tip really pops now. Just my $.02.
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post #10 of 10 Old 02-21-2013, 04:30 PM
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Im cant wait to get my mbrp exhurst put on

Jess
01 F350 Crew Cab 4x4 7.3 once again!!
MBRP 4'' Turbo Back and Chrome
05 Grille
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LIFE IS TO SHORT SO RIDE A FAST HORSE!
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