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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.

 
       

View Poll Results: Which Exhaust is Louder
4" Straight 4 19.05%
5" Straight 17 80.95%
Voters: 21. You may not vote on this poll

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Old 10-04-2008, 12:41 AM   eBay Motors   #1 (permalink)
mromoney
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Whats louder Dual 4" OR stright 5" Exhuast!!!

Ok guys I don't want to hear about you don't need a 5" exhaust if you don't make 500hp's. I and I know other want to know hands down what the loudest exhaust we can get!!! I'm talking 18 wheeler loud! Open Header on a 1969 Yako SS camero 454!!!

Dual 4" exhaust with 4" downpipe (stright or with muffler)

OR

Single 5" exhaust with 4" downpipe (stright or with muffler)

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2004 LB7 Crew Cab 4x4 SLT
Dyno stock numbers 454.3rwTrq and 246.8rwhp boost 22psi EGT 1100

Amsoil-Air Filter, motor oil, both Diff's, Tranny, Tranfer Case Autometer C2 0-35boost and 0-1600temp gauge Cooper STT Tires 285/75-R16
PPE Boost valve Single Flowmaster 4" with a SS 5" tip, two Interstate battery 800 CCA

My Wish list!EFI Live V2,HD tie sleeves, 5" Exhaust, Airdog 150, BD Manifold, Suncoast IV, Water/Methanol injection, AFE cold air induction Guard 7, 71.5 mm cheetah and about 12,000 bucks for the goodies!
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Old 10-04-2008, 12:48 AM   eBay Motors   #2 (permalink)
Tow Master
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My opinion.. I like the 4 inch.. easiar to work with, cheaper,easiar to get parts and clamps for, and it doesnt look over sized!

I have my truck straight piped and its pretty loud. IMO its pretty fun. Id do a 4 and straight pipe it. Sell the muffler you get on ebay!
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2006 Silverado 2500HD LBZ CC SB
Escalade Handles, Front windows tinted to match the rear, painted bumpers, billet grille
4 Kicker 10in Subs in 2 custom box's, Autometer Ultra lite II Pyro and Boost gauges
MBRP Turbo Back Stainless Exhaust (Straight piped), w/ stainless tip! PPE Hot+2
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Old 10-04-2008, 12:51 AM   eBay Motors   #3 (permalink)
mromoney
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do you have dual 4s or a single 4?
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2004 LB7 Crew Cab 4x4 SLT
Dyno stock numbers 454.3rwTrq and 246.8rwhp boost 22psi EGT 1100

Amsoil-Air Filter, motor oil, both Diff's, Tranny, Tranfer Case Autometer C2 0-35boost and 0-1600temp gauge Cooper STT Tires 285/75-R16
PPE Boost valve Single Flowmaster 4" with a SS 5" tip, two Interstate battery 800 CCA

My Wish list!EFI Live V2,HD tie sleeves, 5" Exhaust, Airdog 150, BD Manifold, Suncoast IV, Water/Methanol injection, AFE cold air induction Guard 7, 71.5 mm cheetah and about 12,000 bucks for the goodies!
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Old 10-04-2008, 04:10 AM   eBay Motors   #4 (permalink)
Meyerperformance
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The 5" will be pretty loud thats what i run and if you ditch the muffler its will really come to life 23-2500.

Tyler
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December Sale items. Quadzilla, Airdog, FASS, Diablosport PM for details.
I will be out of country Dec. 4-8th. Let me know if can help before i leave, or upon return.
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Old 10-04-2008, 06:24 AM   eBay Motors   #5 (permalink)
BigRedChevy
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The 5" is louder, but if you really want loud do some stacks.
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05 Chevy LLY Crew Cab LT Dually 4x4 with lots of go fast goodies!!!
Suncoast Tranny, TTS lift pumps, 5" straight pipe, and much more!!!
Send me a PM if you want more info on my mods.

EFI Live Tuned by IdahoRob!!!!

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Old 10-04-2008, 07:28 AM   eBay Motors   #6 (permalink)
1LoudDuramax
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Quote:
Originally Posted by BigRedChevy View Post
The 5" is louder, but if you really want loud do some stacks.
Yep ive got 5" straight and it gets pretty loud but stacks would probably bellow out more
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Old 10-04-2008, 12:35 PM   eBay Motors   #7 (permalink)
TYREBOYZ_DEMAXIN
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the 7" Stacks with a 5" bed kit are louder then any 5" Straight exhaust i have heard..
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Pulling Truck called Late Nights.05 LLY 3500 EC LB DRW tuned By Idaho Rob.
Work truck,06 LBZ 2500 CC SB SRW,tuned by Idaho Rob and PPE at times
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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Old 10-04-2008, 12:41 PM   eBay Motors   #8 (permalink)
1LoudDuramax
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Quote:
Originally Posted by TYREBOYZ_DEMAXIN View Post
the 7" Stacks with a 5" bed kit are louder then any 5" Straight exhaust i have heard..
Is that the kit you have on the dually? It looked GOOD
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2003 DURAMAX 2500HD 4x4
5 INCH Turbo Back STRAIGHT,S&B INTAKE,AIRDOG 150,EFI LIVE,Towing Mirrors,Helo 835's(black/machined)w/ Firestone Destination A/T's, 8,000k HID's
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Old 10-04-2008, 12:46 PM   eBay Motors   #9 (permalink)
TYREBOYZ_DEMAXIN
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yep..7X36's..they are in my brothers LLY Reg Cab Long bed now..
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James

TyreBoyz Pulling Team
Pulling Truck called Late Nights.05 LLY 3500 EC LB DRW tuned By Idaho Rob.
Work truck,06 LBZ 2500 CC SB SRW,tuned by Idaho Rob and PPE at times
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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Old 10-04-2008, 02:22 PM   eBay Motors   #10 (permalink)
mromoney
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Stacks aren't my thing, just looking for the deep loud sound. between dual 4" or 5" stright. So with other the two whats my best bet?
__________________
2004 LB7 Crew Cab 4x4 SLT
Dyno stock numbers 454.3rwTrq and 246.8rwhp boost 22psi EGT 1100

Amsoil-Air Filter, motor oil, both Diff's, Tranny, Tranfer Case Autometer C2 0-35boost and 0-1600temp gauge Cooper STT Tires 285/75-R16
PPE Boost valve Single Flowmaster 4" with a SS 5" tip, two Interstate battery 800 CCA

My Wish list!EFI Live V2,HD tie sleeves, 5" Exhaust, Airdog 150, BD Manifold, Suncoast IV, Water/Methanol injection, AFE cold air induction Guard 7, 71.5 mm cheetah and about 12,000 bucks for the goodies!
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