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Go Back   Chevy and GMC Duramax Diesel Forum > Specialty Forums > After Market Mods. > Performance Upgrades
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Performance Upgrades Discuss what Intakes,Exhaust,Fuel System,Programmers,Tuners,&Trans. are right for you.

 
       

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Old 10-01-2008, 08:33 AM   eBay Motors   #1 (permalink)
04LB7DmaX
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Best Turbo-back exhaust system?

Hey guys, im just wondering what you all think is the best turbo-back exhaust system out there, i had a 4" flowmaster w/5" tip for 3 years, it sounded awesome, was plenty deep and loud, added noticable power and looked good, just for a change i now have 6" grand rock stacks and seem to be getting worse mpg!!!!, so im looking into a new turbo-back setup, i see none of you are running a flowmaster, is there a reason why? So for performance, sound, and looks what do you guys say i should get? lookin for a single system not dual. You guys are the best, counting on ya!
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Old 10-01-2008, 08:39 AM   eBay Motors   #2 (permalink)
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Quote:
Originally Posted by 04LB7DmaX View Post
Hey guys, im just wondering what you all think is the best turbo-back exhaust system out there, i had a 4" flowmaster w/5" tip for 3 years, it sounded awesome, was plenty deep and loud, added noticable power and looked good, just for a change i now have 6" grand rock stacks and seem to be getting worse mpg!!!!, so im looking into a new turbo-back setup, i see none of you are running a flowmaster, is there a reason why? So for performance, sound, and looks what do you guys say i should get? lookin for a single system not dual. You guys are the best, counting on ya!
magnaflow is top of the line. as for the bad mileage its the lift. you have more underflow air drag making worse mileage
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Old 10-01-2008, 08:40 AM   eBay Motors   #3 (permalink)
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Yes the lift hurts and the added rolling resistance, all exhaust are good , i would either go with a Magnaflow,Silverline, or MBRP all great systems, and magnaflow you can get ss for the price of Alumin. in most cases.

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Old 10-01-2008, 08:42 AM   eBay Motors   #4 (permalink)
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Yea, well i had the lift with the flowmaster and i was getting better mpg than with the lift w/stacks. Thanks for the fast replies guys.
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Old 10-01-2008, 08:43 AM   eBay Motors   #5 (permalink)
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Well the 3 listed are top notch companies, and cant go wrong with them.

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Old 10-01-2008, 08:46 AM   eBay Motors   #6 (permalink)
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MBRP is my favorite, period. There fit/finish is top quality and dont charge Gibsons-like prices. Also they have a lifetime warranty for any of there stainless kits. Mangaflow and Silverline are also good brands, but Diamond Eye is the only true TURBO back all others are cat back or down pipe back(You dont have a cat). Get a stainless exhaust and youll never have to replace it. 409 will get a slight amount of surface rust but will never rust through. 304 is expensive as all get-out but it can be polished and stay the way though even the saltiest winters. I have a 4" MBRP on and a Diamond Eye downpipe that im too lazy to put on.
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Old 10-01-2008, 09:45 AM   eBay Motors   #7 (permalink)
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I read somewhere that the Magnaflow has a 14" muffler compared to others which is 24", so it will be a little louder and maybe what you are looking for compared to Flowmaster.
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Old 10-01-2008, 10:00 AM   eBay Motors   #8 (permalink)
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the magna flow is 24" and the MBRP is 30". the big difference is inside the muffler, the magnaflow doesn't use a louver style baffle like MBRP which causes them to have a little deeper tone.
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Old 10-01-2008, 10:05 AM   eBay Motors   #9 (permalink)
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4" or 5"

want new exaust for performance but dont want to be too loud..
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Old 10-01-2008, 10:08 AM   eBay Motors   #10 (permalink)
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The 5 not to loud with muffler, just at wide open throttle , you will notice the exhaust note.
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