Gas vs diesel muffler

92 TY 1173 · 04-11-2008, 09:45 PM

I've read about exhausts or muffler being a diesel specific or "not a gasser muffler." What is the difference? I kinda figured a chambered muffler is no good but what about a straight threw design. I have a Pypes muffler which is 3'' staight threw, fiberglass packed, would that be okay to run. Stock is to quiet but straight piped is just obnoxious and crappy sounding. I will upgrade to 4 or 5 inch eventually, just what alittle sound out of it for now.

**Tow Master** · 04-11-2008, 11:13 PM

Most diesel mufflers are sort of like a "cherry bomb" and go straight through. I think most gasser mufflers have baffles and will start to clog with soot.

Now most people want to make there exhaust bigger but the stock duramax exhaust is a 3.5 not a 3. Also Im not sure if you ever heard a diesel without a muffler but they are NOTHING like a gasser without a muffler. They sound awesome! I have my dmax straight piped and love it!

If your trying to save money and mod the stock exhaust to try to get extra sound Id remove the cat if your truck has one. The cat is the most restrictive and removing that will increase power and sound

92 TY 1173 · 04-12-2008, 06:57 AM

I have mine straight piped now and hate it. I hate the raspy sound in the higher rpm's, just like a cherry bomb. Nice low tone at idle, after that not so much. I had a 12v cummins that was straight piped and that sounded awsome. Low throaty tone but at higher rpm's no rasp. I have no cat so that's no worry. Oh well guess I'll deal with it for now.

mromoney · 04-12-2008, 11:24 AM

Quote:

Originally Posted by 92 TY 1173

I have mine straight piped now and hate it. I hate the raspy sound in the higher rpm's, just like a cherry bomb. Nice low tone at idle, after that not so much. I had a 12v cummins that was straight piped and that sounded awsome. Low throaty tone but at higher rpm's no rasp. I have no cat so that's no worry. Oh well guess I'll deal with it for now.

I have a Flowmaster 50 series 4" single muffler on my truck and I think its a sick sound all around. listen to my chip at youtube.com/mromoney and tell me what you think.

**Tow Master** · 04-12-2008, 12:25 PM

Hmm ya alot of duramax's have a raspy sound at high RPM's. I know mine does. My buddy had a straight piped LLY and it sound way different then mine. I really liked it. I think some sound different due to the turbo

92 TY 1173 · 08-27-2008, 04:09 PM

I finally put a muffler back on it. I ended up getting a Pypes 3.5" straight through muffler. All stainless, nice low rumble at idle and great gas V-8 sound up high. Only cost me $75. I know its stock size but I will go bigger eventually.

WorkTruck · 08-27-2008, 05:11 PM

Where did you get if from?

04-11-2008, 09:45 PM	eBay Motors #1 (permalink)
92 TY 1173 Junior Member Join Date: Jul 2007 Location: Mohrsville, Pa Posts: 94	Gas vs diesel muffler I've read about exhausts or muffler being a diesel specific or "not a gasser muffler." What is the difference? I kinda figured a chambered muffler is no good but what about a straight threw design. I have a Pypes muffler which is 3'' staight threw, fiberglass packed, would that be okay to run. Stock is to quiet but straight piped is just obnoxious and crappy sounding. I will upgrade to 4 or 5 inch eventually, just what alittle sound out of it for now.

04-11-2008, 11:13 PM	eBay Motors #2 (permalink)
Tow Master Oh...... Squirrel! Join Date: Oct 2006 Location: Irwin PA Posts: 23,053	Most diesel mufflers are sort of like a "cherry bomb" and go straight through. I think most gasser mufflers have baffles and will start to clog with soot. Now most people want to make there exhaust bigger but the stock duramax exhaust is a 3.5 not a 3. Also Im not sure if you ever heard a diesel without a muffler but they are NOTHING like a gasser without a muffler. They sound awesome! I have my dmax straight piped and love it! If your trying to save money and mod the stock exhaust to try to get extra sound Id remove the cat if your truck has one. The cat is the most restrictive and removing that will increase power and sound __________________ Jason 2006 Silverado 2500HD LBZ CC SB Exterior: Escalade Handles, Front windows tinted to match the rear, painted bumpers & mirrors, billet grille, 285/70/17 Nitto Crossteks on Pro Comp Wheels, Cognito Braces, Stainless Sleeves, Train Horns Interior: 4 Kicker 10in Subs in 2 custom box's, Autometer Ultra lite II Pyro and Boost gauges, Aeroforce Interceptor Gauge, HID Lows & Fogs, Painted accents Performance: EFI Live Tuned by Blackout Performance, Custom *Blackout Performance* S475 over stock twins, 45 over stock injectors, MBRP Turbo Back Stainless Exhaust (Straight piped), Raptor Lift Pump, AFE Filter, GMAX6 kit with Suncoast 1057 converter installed by *Blackout Performance* 1999 Ford F-550 PowerStroke ''Wrecker'' **Jerrdan bed, S&B Intake

04-12-2008, 12:25 PM	eBay Motors #5 (permalink)
Tow Master Oh...... Squirrel! Join Date: Oct 2006 Location: Irwin PA Posts: 23,053	Hmm ya alot of duramax's have a raspy sound at high RPM's. I know mine does. My buddy had a straight piped LLY and it sound way different then mine. I really liked it. I think some sound different due to the turbo __________________ Jason 2006 Silverado 2500HD LBZ CC SB Exterior: Escalade Handles, Front windows tinted to match the rear, painted bumpers & mirrors, billet grille, 285/70/17 Nitto Crossteks on Pro Comp Wheels, Cognito Braces, Stainless Sleeves, Train Horns Interior: 4 Kicker 10in Subs in 2 custom box's, Autometer Ultra lite II Pyro and Boost gauges, Aeroforce Interceptor Gauge, HID Lows & Fogs, Painted accents Performance: EFI Live Tuned by Blackout Performance, Custom *Blackout Performance* S475 over stock twins, 45 over stock injectors, MBRP Turbo Back Stainless Exhaust (Straight piped), Raptor Lift Pump, AFE Filter, GMAX6 kit with Suncoast 1057 converter installed by *Blackout Performance* 1999 Ford F-550 PowerStroke ''Wrecker'' **Jerrdan bed, S&B Intake

08-27-2008, 05:11 PM	eBay Motors #7 (permalink)
WorkTruck DuramaxForum Fanatic Join Date: Jun 2008 Location: Traveling, Cohocton, NY right now Posts: 337	Where did you get if from? __________________ '07 Classic 2500HD ext. cab nerf bars delta diamond plate tool box back rack Edge Juice w/attitude K&N CAI MBRP 4" turbo back w/5" tip Moto Metal 16 x 9 (hopefully 285's soon!) 04 GMC Yukon Denali 07 Honda Rancher 400 w/ITP Mudlites!

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04-12-2008, 06:57 AM	eBay Motors #3 (permalink)
92 TY 1173 Junior Member Join Date: Jul 2007 Location: Mohrsville, Pa Posts: 94	I have mine straight piped now and hate it. I hate the raspy sound in the higher rpm's, just like a cherry bomb. Nice low tone at idle, after that not so much. I had a 12v cummins that was straight piped and that sounded awsome. Low throaty tone but at higher rpm's no rasp. I have no cat so that's no worry. Oh well guess I'll deal with it for now.

08-27-2008, 04:09 PM	eBay Motors #6 (permalink)
92 TY 1173 Junior Member Join Date: Jul 2007 Location: Mohrsville, Pa Posts: 94	I finally put a muffler back on it. I ended up getting a Pypes 3.5" straight through muffler. All stainless, nice low rumble at idle and great gas V-8 sound up high. Only cost me $75. I know its stock size but I will go bigger eventually.

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