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| 01-04.5 LB7 Performance Parts Discussion Discussion of Performance Parts For the 01-04 LB7 Duramax Trucks No Advertising |
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04-01-2007, 05:22 PM
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eBay Motors
#1 (permalink)
| | Junior Member
Join Date: Jun 2006 Location: ponchatoula La
Posts: 25
| Is it worth running my
stock exhaust without the muffler or should i just go get the 5in Magnaflow exhaust? i say 5in because i am told that i will be able to hear more turbo with the 5in exhaust. and thats what i want. | 
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04-01-2007, 05:57 PM
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eBay Motors
#2 (permalink)
| | Member
Join Date: Mar 2007 Location: Way down in southwest La
Posts: 35
| Turbo whistle isn't the only reason to run a bigger exhaust.
__________________ 2008 4x4 CC Dually, PPE Hot Race, Magnaflow 4" str8 pipe, Ranchhand bumpers  | |
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04-01-2007, 05:57 PM
|
eBay Motors
#3 (permalink)
| | Duramax Forum Moderator
Join Date: Feb 2007 Location: Barnesville OH
Posts: 3,398
| i runnin a 5" magnaflow and i wouldn't do without the 5",it sounds wicked
__________________ James 
05 LLY Chevy LS E/C L/B DRW my older brothers truck now
2006 LBZ GMC SLE C/C S/B,sold the truck to my dad for a business truck
My Truck now,1987 Chevy 2500 350 tweaked,6" SuperLift,350 V8 bored 60 over,Elderbrock headers Cam and Titanium Rockers,750 Twin Pumped Holley Carb and some other goodies.crank dynos over 400HP. | |
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04-01-2007, 06:29 PM
|
eBay Motors
#4 (permalink)
| | Junior Member
Join Date: Jun 2006 Location: ponchatoula La
Posts: 25
| are you guys running the magnaflow with the muffler? | |
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04-02-2007, 12:08 AM
|
eBay Motors
#5 (permalink)
| | Super Man Moderator Points: 10,356, Level: 43 |
Join Date: Oct 2006 Location: Irwin PA
Posts: 3,068
| When I was looking at exhausts I narrowed it down between a Magnaflow and a MBRP. I heard some people say the magnaflow didnt fit correctly and rusted faster so I went with a MBRP 4in stainless.
IMO I'd get a stainless 4 before I bought a 5 so it wouldnt rust and last more than a few years. The big killer in exhausts is the cat. If you eliminate that then you will get alot more HP and noise from the motor and turbo.
So to answer your question Id get a down pipe back exhaust. Alot more power and alot more noise. 
__________________ Jason 2006 Silverado Shortbed Crew Cab LBZ Escalade handles, Line-x, Painted bumpers and towing mirrors, Tinted Front Windows & Tail lights 4 Kicker 10in Subs & Punch 250amp in 2 custom boxs. Autometer Ultralite II Pyro & EGT gauges with pillar pod MBRP Turbo Back stainless exhaust (Straight piped), AFE Stage II Intake, PPE Hot+2 285/75/16 Nitto Terra Grapplers on Gear Alloy wheels Lost Kitty Reward if found!! 1999 Ford F-550 Powerstroke Tow Truck-Wrecker **Jerr-Dan Bed, S&B Intake  | |
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04-02-2007, 04:49 AM
|
eBay Motors
#6 (permalink)
| | Duramax Forum Moderator
Join Date: Feb 2007 Location: Barnesville OH
Posts: 3,398
| Quote:
Originally Posted by claydog  are you guys running the magnaflow with the muffler? | i did run my 5" exhaust with out the muffler but it had to much of a whistle so i installed the muffler the came with the setup and it sounds great,but like it was posted above the aluminized will rust quickly so don't go cheap buy the stainless steel....good luck on your choice
__________________ James
05 LLY Chevy LS E/C L/B DRW my older brothers truck now
2006 LBZ GMC SLE C/C S/B,sold the truck to my dad for a business truck
My Truck now,1987 Chevy 2500 350 tweaked,6" SuperLift,350 V8 bored 60 over,Elderbrock headers Cam and Titanium Rockers,750 Twin Pumped Holley Carb and some other goodies.crank dynos over 400HP. | |
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