4" MBRP EXHAUST ... turbo or cat back? - Ford Powerstroke Diesel Forum
 
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post #1 of 5 Old 06-09-2012, 01:05 PM Thread Starter
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4" MBRP EXHAUST ... turbo or cat back?

im looking into getting a MBRP 4" turbo back black powdercoat exhaust.. but i dont know if i should get turbo back or cat back. what i really want is more horsepower, but on the other hand i dont want to lose any gas mileage.

any input please?

thanks
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post #2 of 5 Old 06-09-2012, 01:10 PM
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do you even have a cat? regardless turbo back
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post #3 of 5 Old 06-09-2012, 01:26 PM
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As Bruce said, turbo back. I don't think most of the trucks have cats, only some


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post #4 of 5 Old 06-09-2012, 02:07 PM Thread Starter
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alright i didnt know then, because i thought all trucks came stock with cats.

and how much of a difference would it make with the horsepower? like would it be a noticable difference from what i have now, stock 3.5" exhaust but i took out the muffler and put a straight pipe on it

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post #5 of 5 Old 06-09-2012, 02:19 PM
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I honestly do not think you will feel any difference but you may see slightly lower egts. I ran my old 99.5 with just a TS chip and was just fine. I really do not think you need to upgrade exhaust unless you want the cooler sound or plan on a good amount of HP. My 99.5 never had egt issues with stock exhaust and turbo. This includes towing through the rocky mountains.


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03 F350 7.3L Auto CC LB Dually 410's (LS Rear)315's

PHP/Beans tuned, 250/100 FF inj's, BTS Tranny, Strictly Diesel complete fuel system w/RR & FB Delete, Pius LASB from Irate, Swamps hvhf IDM
Autometer Nexus Guages (TT,FP,BP,EGT), 4"MBRP, DieselSite Coolant filtration system/billet housing/HP X-Over line, Baldwin PA2818(6637) RR Boots, 26 row 6.0 Tranny & PS Cooler, LarryB's Denso Starter
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