GM Truck Club
THE PREMIER CHEVY TRUCK & SUV FORUM
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Page 1 of 2 12 Last Post byLast Post by
Results 1 to 10 of 16
  1. #1

    Default exhaust question

    hey there. i have a question about my dual exhaust on my '96 5.7. How come it goes quiet(like stock quiet) at certain rpms? is there a way to fix that or does every aftermarket exhaust do this? I think this is a stupid question but i have to ask it because its just odd to me

  2. #2
    Master Mechanic
    AMac's Avatar
    Join Date
    Feb 2012
    Location
    New England
    Posts
    944

    Default

    well for me, if my foot isn't on the peddle it is fairly quiet. Sometimes I like to use the 'shift on the fly' to down shift (safely of course) so I can hear the exhaust when going through the tolls in the morning.

    What rpms are you experiencing this at?




  3. #3
    Jr. Mechanic
    Join Date
    May 2011
    Location
    Bridgeville, PA (Pittsburgh)
    Posts
    75

    Default

    I've noticed this as well. I'm pretty sure that it's common on every aftermarket exhaust. Like AMac said if my foot isn't on the pedal then it seems fairly quiet, but as soon as I lay on it she roars.
    2010 Red Silverado Crew Cab Z71 LT
    Blacked Out
    15% Tint all around
    22" KMC Slide Series Black Chrome Rims
    305/45/22R Nitto Dune Grappler Tires
    ReadyLift Leveling Kit
    K&N CAI
    IPCW Black Halo Projector LED Headlights
    IPCW Black Third brake Light
    IPCW Black LED Taillights
    Street Scene Front Bumper Valance
    Street Scene Black Chrome Grille
    Black Bowties
    Magnaflow Dual Exhaust
    Alpine Touchscreen Headunit
    4 Kicker RS Componet Speakers
    Kicker 12" L7 subwoofer w/ Kicker ZX1500.1 Amplifier

  4. #4

    Default

    I am experiencing this at 2200 or 2500 and again around 4000

  5. #5

    Default

    I think it is normal as mine does it too. more about how much air is having to be extracted and going through the exhaust which is related to how much is needed going in through the intake.
    David
    2004 Silverado 2500 Crew Cab 4x4, AMSOIL EA air filter, Granatelli MAF sensor, Throttle body spacer, Magnaflow exhaust (true dual to 2 in 1 out muffler), 6" ProComp lift (add a leaf and 5" superlift rear block), Bilstein shocks, 35's (Cooper Disoverer ST) and 4.10 gears, Rhino Liner, EGRUSA fender Flares and widow visors, extended stainless steel brake lines, firestone airbags w/onboard air compressor, Pioneer Avic X940BT navigation, Accel backup camera.
    http://www.gmtruckclub.com/forum/sho...Silverado-2500
    1960 Land Rover Series II 88
    2001 Pontiac Sunfire
    2013 Toyota Avalon Limited (Wife's Car)
    NRA Life Member

  6. #6

    Default

    Same here quattro but it would be nice if the tone stayed through the rpm range...lol. My stepfather has dual flowmasters on his '06 2500hd and it dont seem to have this problem. Could how the muffler is made make a difference? I dont understand what you are trying to say floyd

  7. #7
    Jr. Mechanic
    Join Date
    May 2011
    Location
    Bridgeville, PA (Pittsburgh)
    Posts
    75

    Default

    He's saying that when you press on the pedal your intake sucks in more air. Which then results in more air going through the exhaust making the rumble louder. So when your at low rpm's there isnt as much air going through as when it's in the higher rpm range. I don't understand why your truck isn't still loud in the 4000 rpm range. That does seem odd. I don't think how the muffler is made really effects the rumble in different rpm ranges, but don't quote me on it lol.

  8. #8
    Legend

    Join Date
    Feb 2008
    Location
    Red Wing, Minnesota, United States
    Posts
    3,389

    Default

    every exhaust will sound different, I have had the same setup on my suburbanfor 5 years but have had 2 different mufflers, and it was completely different results. My pickup has a flowmaster super 10 and isnt even that loud either but I also still have the factory setup just swapped mufflers. the wrong pipe size can effect it as well. use youtube and figure out what you want and read the posts on the vids to figure out setups mind you that even though they may have one sound when you get it done on your truck it wont sound the same, exhaust is a trial and error.
    99 K1500 Suburban LT "THE BEAST"
    Hypertech III, K&N, true dual
    285/75/16
    ___________________________
    Jason

  9. #9

    Default

    Quote Originally Posted by AMac View Post
    well for me, if my foot isn't on the peddle it is fairly quiet.
    Your feet reach the pedals?!

  10. #10
    Master Mechanic Burden33's Avatar
    Join Date
    Mar 2009
    Location
    Goose bay, Labrador Canada
    Posts
    982

    Default

    Quote Originally Posted by SurrealOne
    Your feet reach the pedals?!
    She got those adjusting pedals so she can reach them.


    Fabtech/Banks Ram Air |Fuel Off Road/ 315/70/17 duratracs |Hyper tech / Spencershids |
    Color Matched Bowtie |15% Tint on Front Windows|20% Tint on Back Windows




    Chevy Ridin' High
    "Black rims are as cool as a boner at a swim meet"

Page 1 of 2 12 Last Post byLast Post by

Similar Threads

  1. exhaust question
    By redneckwannabe in forum Chevy Truck Accessories
    Replies: 7
    Last: 09-04-2011, 02:39 PM
  2. Exhaust Question
    By bacon89 in forum Chevy Silverado Forum (GMC Sierra)
    Replies: 8
    Last: 04-01-2011, 01:42 PM
  3. exhaust question
    By blacknight97 in forum Chevy Silverado Forum (GMC Sierra)
    Replies: 3
    Last: 02-16-2010, 04:32 PM
  4. Exhaust Question
    By teqman666(dave) in forum General Chevy & GM Tech Questions
    Replies: 4
    Last: 09-21-2009, 02:58 PM
  5. ANOTHER exhaust question
    By Silver08JT in forum Chevy Truck Accessories
    Replies: 5
    Last: 02-08-2009, 01:57 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •