5 inch turbo back or cat back? - Ford Powerstroke Diesel Forum

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

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post #1 of 11 Old 09-22-2011, 01:02 PM Thread Starter
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5 inch turbo back or cat back?

guys im looking to get a MBRP 5 inch exhaust.

what do i want lol .. turbo back or cat back?

also where is the best place to buy? EBAY?


i have been doing some searching and reading but just wana ask your thoughts. thanks guys

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post #2 of 11 Old 09-22-2011, 01:04 PM Thread Starter
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also are you guys running mufflers or cats?

SOLD - 02 F350 CC LB DRW 6 speed 2wd
SOLD - 01 F350 CC LB 12inch lift on 24's and 38's
SOLD - E99 CC DRW 2wd 6 speed
TRADED IN THANK GOD! - 2005 DODGE 2500 CC SB

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post #3 of 11 Old 09-22-2011, 02:41 PM Thread Starter
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anyone?

kinda a newb question but thanks. just wana see some thoughts out there...

SOLD - 02 F350 CC LB DRW 6 speed 2wd
SOLD - 01 F350 CC LB 12inch lift on 24's and 38's
SOLD - E99 CC DRW 2wd 6 speed
TRADED IN THANK GOD! - 2005 DODGE 2500 CC SB

CURRENT-2005 CC DRW 2wd!
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post #4 of 11 Old 09-22-2011, 03:24 PM
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Some have both some have none. I personally just ordered my 4in turbo back straight pipe. No cat no muff. From all of the research I have seen 4in is good all around unless you plan on heavily modifying it. I plan on mine being close to stock so I opted for the 4in. The biggest question is if you have to pass smog or not. If so then you will only be able to get away with a cat back unless you reinstall (at your own risk) the cat for inspections. I have the luxury of being able to register mine in a state that does not require smog inspections. Be careful with ebay. I found mine cheaper locally. Also search around on the net as there are several right now offering free shipping on MBRP exhaust.

Also there are guys that say the 5in will give you a more throaty sound

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post #5 of 11 Old 09-22-2011, 03:31 PM Thread Starter
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good point never thought of that. making a phone call now. thanks for the reply though

SOLD - 02 F350 CC LB DRW 6 speed 2wd
SOLD - 01 F350 CC LB 12inch lift on 24's and 38's
SOLD - E99 CC DRW 2wd 6 speed
TRADED IN THANK GOD! - 2005 DODGE 2500 CC SB

CURRENT-2005 CC DRW 2wd!
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post #6 of 11 Old 09-22-2011, 03:32 PM
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If you want to be 'legal' you'd have to keep the cat and muffler. But most people don't. 4inch is plenty as stated unless you just want the diff tone or have a ton of power. Turbo back is best.



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post #7 of 11 Old 09-22-2011, 03:35 PM Thread Starter
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ok well sounds like im just gonna do a turbo back and keep the stock exhaust around.

SOLD - 02 F350 CC LB DRW 6 speed 2wd
SOLD - 01 F350 CC LB 12inch lift on 24's and 38's
SOLD - E99 CC DRW 2wd 6 speed
TRADED IN THANK GOD! - 2005 DODGE 2500 CC SB

CURRENT-2005 CC DRW 2wd!
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post #8 of 11 Old 09-22-2011, 03:57 PM
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You can always punch out the CAT and put it on there to make it look stock. And get a straight flow muffler if you have to wind up having one. Still flows great and looks/is legal.



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post #9 of 11 Old 09-23-2011, 04:45 AM
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I went with a 5" turbo back. Farmboys Diesel Performance - Ford | Dodge | GM | Exhausts | Turbos | Tuning | Power They have really good prices. BTW, if you dont get a cat for it, make sure you buy the car delete pipe.



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post #10 of 11 Old 09-23-2011, 07:22 PM
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I'm running 5" with a muffler but no cat. There are no smog tests for diesels in Illinois as far as I know, and it also passed yearly inspection for D plates no problem.


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