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  1. #1
    Jr. Engineer
    Join Date
    Jan 2009
    Rochester, MN

    Default Newly Installed Dynomax Superturbo Catback System is Too Loud

    So I just finished installing my Dynomax Cat back exhaust system today and it seems a little too loud for what I thought it was going to be. I wanted something that would sound throaty and strong and not be too loud so I got the super turbo muffler as everything I have heard about it is that it is one of the quietest performance mufflers around. It is incredibly loud and makes backfiring noises and I am not very happy with it. Has anybody else tried one of these out before? My Suburban had custom duals with a Flowmaster (don't know what kind) and it was not anywhere nearly as obnoxious as this one. Do they need to break in to quiet down or something?
    99 Silverado Z71 4.8
    2" Suspension lift (Add-a-leafs and leveling keys)
    Long tube headers with 3" offroad Y-Pipe
    Volant Cold Air Intake with Ram Air Intake Tube
    Jet Mass Air Flow Sensor
    Diablosport Predator Tuner

    Previous Truck:
    97 Suburban K1500
    3" Body lift
    2" Suspension Lift (Add-a-leafs and cranked up torsion bars)
    35" Yokohama M/T's
    K&N Intake
    Airraid Throttle Body Spacer
    Hypertech Programmer
    Dual Flowmasters

  2. #2


    i have only heard one dynomax before and like you said i was not overly impressed. i dont know what kind it was though. i put a genaric magnaflow muffler on my 04 silverado. when i found out what it sounded like after havin a buddy do a drive by for me. i was actually impressed. but i still think i want a bit louder. so i was gonna look into flowmaster. but it could be worth a look if your not going to get desired sound from your current set up.

  3. #3
    Legend 2ToNe04's Avatar
    Join Date
    Apr 2009
    Fresno California
    Blog Entries


    i bet it sounds like a beast

    if you dont like it ill trade LMAO

    2004 4.8| Custom Paint| Tint| De-badged| Shaved Tailgate| Rollpan| Smoked Tails| Color Matched| Lowered 5/8| Suede Interior| Color Matched Interior| Indash & TVs| Mids-Lows & 2 12" CVRs| 500 & 1100 Interfires| Soundeadener| Outlaw CAI| Magnaflow|
    Future Mods: 6.0 LQ4/9| Bags|

  4. #4
    Jr. Mechanic
    Join Date
    Nov 2008
    Northern Colorado


    i had an aero turbine installed on 5.3L because i have heard them on that motor before and really liked it. I liked the way it sounded when going down the road but it wasn't very loud idling so I had it side dumped to make it louder when it idled.
    My first Chevy :great:
    2005 Silverado 1500 ECSB Z71 5.3L:
    3'' Aero Turbine exhaust with side dump
    6000k HID's Highs, lows and fogs with H-4 mod
    Rough Country Full Leveling Kit
    285/70/17 Firestone Destination A/T's
    Dick Cepek DC1
    EFI Live
    more to come..

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