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Thread: No Muffler

  1. #1
    Join Date
    May 2002
    Location
    Corpus Christi, Texas
    Posts
    109

    Default No Muffler

    Anyone taken the muffler off the DMax and just put in a straight pipe. Wonder how loud it would be and if it would give the motor any performance issues.
    Don't worry about the Mule, Just load the Wagon!!!!!!!

    Hunting Vehicle: 1980 Cj7, 304 v8, Brute Mudders, 8000lb Warn winch, Go Anywhere!

    2004 2500HD, Silver Birch, 4x4, D/A, Biggest R&K Tool Box They Make, Rubber Bed Mat (tits up), Headache Rack & Grill Guard Painted To Match, K&N Filter, Halogen Backup Lights, Gooseneck hitch, Limo Tint On Windows, LT295/75 BFG Tires, Escort Brake Control, Ruger Security
    System.

  2. #2
    Join Date
    Feb 2000
    Location
    Houston, Texas, USA
    Posts
    251

    Default

    I had that on my 03. It seemed loud at 1st but I got used to it. I liked it. Though if you live in a "high falutent" neighborhood people will turn around and watch you drive down the street.
    David Proske #418
    '06 CHEVY LBZ 2500HD CC LWB
    '03 GMC 2500HD D/A *sold* :-(
    '94 K2500HD W/GV OD

  3. #3
    Join Date
    May 2002
    Location
    Corpus Christi, Texas
    Posts
    109

    Default muffler

    Did you have any problems with the Turbo? Or loose/gain power?
    Don't worry about the Mule, Just load the Wagon!!!!!!!

    Hunting Vehicle: 1980 Cj7, 304 v8, Brute Mudders, 8000lb Warn winch, Go Anywhere!

    2004 2500HD, Silver Birch, 4x4, D/A, Biggest R&K Tool Box They Make, Rubber Bed Mat (tits up), Headache Rack & Grill Guard Painted To Match, K&N Filter, Halogen Backup Lights, Gooseneck hitch, Limo Tint On Windows, LT295/75 BFG Tires, Escort Brake Control, Ruger Security
    System.

  4. #4
    Join Date
    Feb 2000
    Location
    Houston, Texas, USA
    Posts
    251

    Default

    No issues with the turbo or anything else with taking the muffler off. Turbo did spool up a little quicker. Maybe a little power increase but hard to tell.
    David Proske #418
    '06 CHEVY LBZ 2500HD CC LWB
    '03 GMC 2500HD D/A *sold* :-(
    '94 K2500HD W/GV OD

  5. #5
    Join Date
    Mar 2001
    Location
    williamsburg, ohio ,usa
    Posts
    340

    Default

    Lost the cat and have a Magnaflow straight through muffler on an 04 LLY. Sound almost normal w/o load. With 38' GN trailer on hill along guardrail a little louder, roll rt rear window down and WOW definetly more noise! Kinda fun w/ windows down. Windows up just a little louder on 500mi plus trip @ 22000#gvw. bob........ oh yes better pulling mileage of about 1 mpg.
    Bob O.
    2004 K2500 DA LLY CC LT LB Wow! Edge w/A + BS + CAT pre fuel filter, 06 air box,
    2002 C6500 EC. 7.2 Cat NoMar rollback/ 92 C7500, 7.2 Cat, 25ton No-Mar / 2005 C5500 D/A rollback / 1969 Corvette 350-350 4spd AC T-top stock orginal
    XP850LE WOW nice ATV, 09-550XP hers, 03-Predator, 04 Honda400EX, 05-Banshee, 08-KTM525, 08 KFX700, 38' enclosed GN hitch

  6. #6

    Default T T T

    I am finally picking up my 2500HD LBZ on wednesday and am wondering how it would sound with the cat left in and the muffler removed. One aftermarket shop said it is a cheap way out and sounds better than some aftermarket systems. I want it to be quiet/throaty at idle and nice and throaty under heavy load. I don't need it to sound like my CAT Kenworth boom truck with 7" straight stacks, but just a little something to let you know its there.

    Also, would the muffler removal set off any codes with the cat left in place?

    Thanks
    Jesse

  7. #7
    Join Date
    May 2002
    Location
    Corpus Christi, Texas
    Posts
    109

    Default

    Jesse,

    Sounds like you want the same thing I want my truck to sound like. I just haven't done it yet. Let me know how it turns out.

    Ranger
    Don't worry about the Mule, Just load the Wagon!!!!!!!

    Hunting Vehicle: 1980 Cj7, 304 v8, Brute Mudders, 8000lb Warn winch, Go Anywhere!

    2004 2500HD, Silver Birch, 4x4, D/A, Biggest R&K Tool Box They Make, Rubber Bed Mat (tits up), Headache Rack & Grill Guard Painted To Match, K&N Filter, Halogen Backup Lights, Gooseneck hitch, Limo Tint On Windows, LT295/75 BFG Tires, Escort Brake Control, Ruger Security
    System.

  8. #8

    Default

    I tried it on my '01. Didn't see any measureable gain in power or fuel mileage, it was just noisier and seems like maybe more turbo lag on inital (unloaded) acceleration. Lag not noticable when towing, but the drone is and I like my CDs...

    Will eventually install a true performance 4" system with a decent resonator.

    My advice? Don't do it.
    2011 Chevrolet Tahoe 5.3L daily driver
    • Previous owner of two 1994 6.5L K3500s, '01, '02, and '05 6.6L K2500s, '04 C4500, '06 K3500 dually, '06 K3500 SRW, '09 K3500HD SRW, '05 Denali
    • Total GM diesel miles to date : ~950K

  9. #9
    Join Date
    Nov 2000
    Location
    foxboro,ma.
    Posts
    908

    Default

    Quote Originally Posted by Mark Rinker
    I tried it on my '01. Didn't see any measureable gain in power or fuel mileage, it was just noisier and seems like maybe more turbo lag on inital (unloaded) acceleration. Lag not noticable when towing, but the drone is and I like my CDs...

    Will eventually install a true performance 4" system with a decent resonator.

    My advice? Don't do it.
    ************************************************** ********

    I dont advise doing a truck without a cat , it would be VERY noisy!

    2004 and newer trucks have a cat , your 2001 did not. I feel fairly safe in saying you should not find a truck with a cat and a muffler delete being too loud. I dont think it will code also , I have a 2006 lbz with a strait threw 4" exhaust it doesnt code. I think the cat produces enough back pressure to keep the EGR happy .

    Get er done!

    I am only guessing but a shop shouldnt charge much to cut out a muffler and strait pipe it..... Maybe $100.00 tops , good aftermarket systems start at 400.00 (parts only)
    93 c-2500 6.5td,96 6.5td x cab,01 GMC lb7 Xcab ,2004 lly crew cab ,2006 lbz crew cab,honda CBR1100xx,2003 polaris prox 700 , 2001 31' holiday rambler 10K lbs house on wheels!

  10. #10

    Default thanks...

    Good input everyone. I think I'll give it a shot with the back-up plan of adding a small resonator down the road if needed.

    Thanks again and I'll let you know how it turned out.

    Jesse

  11. #11
    Join Date
    Dec 2005
    Location
    Klamath falls/keno Oregon
    Posts
    466

    Default

    Quote Originally Posted by O&A party rock View Post
    Good input everyone. I think I'll give it a shot with the back-up plan of adding a small resonator down the road if needed.

    Thanks again and I'll let you know how it turned out.

    Jesse

    And?....
    06 1ton 4X4 duramax/6speed ext.cab WT
    Hummer wheels :^)
    dual lift pump
    Banks air intake

  12. #12
    Join Date
    Jan 2001
    Location
    Knoxville,Tennessee
    Posts
    2,639

    Default

    Quote Originally Posted by spongebob View Post
    And?....

    Spongebob dont hold your breath. That post is from 2006
    "The Constitution is not an instrument for the government to restrain the people, it is an instrument for the people to restrain the government."
    -Patrick Henry


    A5150nut
    2006 K3500 D/A
    94 6.5 4x4 5spd Sold

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