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Thread: Flowmaster too LOUD!!!

  1. #21
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    Quote Originally Posted by 97Stepside View Post
    Instead of switching to one of these many glasspacks, why don't you just switch to one of Flowmaster's quiet mufflers? After looking at their website, it appears that most of their mufflers are actually pretty quiet. It's only those 40 series mufflers that are loud. Check out Flowmaster, Inc The Muffler and Exhaust Technology Company manufacturer of performance exhaust systems, mufflers, exhaust kits and look up their 70 series muffler. From what I can tell, it should be almost stock-quiet on your truck, and apparently you won't sacrifice any performance at all.
    I'm thinking of trying one of those 50s for my '97, since it also has a 40, and is pretty loud.
    40s are one of their more quiet mufflers. 44s and 10s are ridiculous loud compared to 40s.

    1969 Chevy RCLB C10 350/TH400 SOLD
    2007 Chevy RCSB 4.8 4x4 LS SOLD
    2008 Chevy RCSB 5.3 4x4 LT SOLD
    2010 Chevy CCSB 6.2 4x4 LT SOLD
    2005 GMC CCLB DRW 6.6 Duramax 4x4 191,000 and counting
    2013 FORD CCSB F350 6.7 Powerstroke 4x4


  2. #22
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    Quote Originally Posted by pl4yboy View Post
    40s are one of their more quiet mufflers. 44s and 10s are ridiculous loud compared to 40s.
    ???? Have you ever been to their website? I've been using Flows for 20 years, and after having mainly 40s on about 10 different vehicles (from BMWs to my last '02 Chevy truck) , I'll vouch for them being very loud. If you check the site, the 70 is the quiet one (supposedly really quiet on cat-equipped vehicles), and any 40 is the loud one (40, Super 44, Super 40, deltaflow 40 [why they need that many!?!?]). Their 50s seem to be somewhere in the middle. It's really kind of confusing- I don't know why they need that many different mufflers, but I'd have to say that most of them are a lot quieter than people seem to think.

  3. #23
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    Quote Originally Posted by 97Stepside View Post
    ???? Have you ever been to their website? I've been using Flows for 20 years, and after having mainly 40s on about 10 different vehicles (from BMWs to my last '02 Chevy truck) , I'll vouch for them being very loud. If you check the site, the 70 is the quiet one (supposedly really quiet on cat-equipped vehicles), and any 40 is the loud one (40, Super 44, Super 40, deltaflow 40 [why they need that many!?!?]). Their 50s seem to be somewhere in the middle. It's really kind of confusing- I don't know why they need that many different mufflers, but I'd have to say that most of them are a lot quieter than people seem to think.
    lol. Want me to show you videos of three identical 5.3s, one with 10s, one with 44s, and one with 40s? I own two of the vehicles, so that isn't really a problem. I promise you, the 10s and 44s DOMINATE the 40s. I said the 40 was one of their quieter ones, not the quietest. Yes, a 70 is more quiet. 40s and 50s are comparable.

    1969 Chevy RCLB C10 350/TH400 SOLD
    2007 Chevy RCSB 4.8 4x4 LS SOLD
    2008 Chevy RCSB 5.3 4x4 LT SOLD
    2010 Chevy CCSB 6.2 4x4 LT SOLD
    2005 GMC CCLB DRW 6.6 Duramax 4x4 191,000 and counting
    2013 FORD CCSB F350 6.7 Powerstroke 4x4


  4. #24
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    There is a lot of background noise so its kinda hard to hear but I tried.
    It's Magnaflow dual 2.5"in/out 22"X5"X11", Edelbrock shortys, No cats.


    Last edited by lo-lyf; 10-02-2009 at 03:03 PM.
    2005 black Yukon XL SLT - traded in for me wife's new Fusion (GM sucks these days)
    2002 black Yukon SLT (the skinny sister)
    1969 green Pontiac GTO (Layla, AKA the black sheep)

    INSTALLS AND MORE.. http://www.ls1truck.com/forums/my-ga...-low-life.html
    Sticky/broken gauges? I can help. PM me for details.

  5. #25
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    Yeah i think here in the next week or 2 im gona get an aero chamber. Stealthy!! even though its still slow!!
    2006 extended cab, 6.0 swap, full bolt ons SOLD
    2011 ECSB, 6.2, 6 spd, 3.73, 5" lift, 33" nitto, limo tint, debadged, volant CAI, muffler delete, black bear tune 14.0 @ 98 on the 33'sSOLD
    2007 TBSS AWD, cam, stall, built trans, N2OSOLD
    2006 RCSB cammed LQ9, full exhaust, 3200 stall, 2-4 drop
    Quote Originally Posted by farmtruc View Post
    "if i have to explain, you don't get it"

    49 Ford F1
    355 chevy / turbo 350 / 12 bolt posi / camaro subframed

  6. #26
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    FWIW I just switched from my 40 series which i eventually learned to hate from the stupid drone and constant headache it gave me to a Pypes performance M-80 straight through built pretty much like a magnaflow but with a slightly more attractuive price

    ....I LOVE IT!! i've actually tried to recrank my truck once as soon as I got it put on cuz at idle its al most silent but as soon as you get on it it sounds awesome!!
    Barks better than it bites......

  7. #27
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    Honeywood, Ontario
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    I have a 22" Magnaflow, quiter at idle, a little louder at cruise and even on the 4.3 it sounds great at WOT
    2006 Silverado
    Little Black Bitch

  8. #28
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    Apr 2008
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    Hey I just saw a magnaflow XL 3 chamber, anybody heard one of these? I was set on the hooker til i saw all the happy magnaflow customers and I noticed that....
    TOOO MANY CHOICES!! lol
    2006 extended cab, 6.0 swap, full bolt ons SOLD
    2011 ECSB, 6.2, 6 spd, 3.73, 5" lift, 33" nitto, limo tint, debadged, volant CAI, muffler delete, black bear tune 14.0 @ 98 on the 33'sSOLD
    2007 TBSS AWD, cam, stall, built trans, N2OSOLD
    2006 RCSB cammed LQ9, full exhaust, 3200 stall, 2-4 drop
    Quote Originally Posted by farmtruc View Post
    "if i have to explain, you don't get it"

    49 Ford F1
    355 chevy / turbo 350 / 12 bolt posi / camaro subframed

  9. #29
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    TheSlowOne07 has a magnaflow and we cruised through town one night and he said all he could hear was my super 44s. Couldn't even hear his truck. We raced a little and his is sooo quiet until he gets WOT.

    1969 Chevy RCLB C10 350/TH400 SOLD
    2007 Chevy RCSB 4.8 4x4 LS SOLD
    2008 Chevy RCSB 5.3 4x4 LT SOLD
    2010 Chevy CCSB 6.2 4x4 LT SOLD
    2005 GMC CCLB DRW 6.6 Duramax 4x4 191,000 and counting
    2013 FORD CCSB F350 6.7 Powerstroke 4x4


  10. #30
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    Quote Originally Posted by pl4yboy View Post
    TheSlowOne07 has a magnaflow and we cruised through town one night and he said all he could hear was my super 44s. Couldn't even hear his truck. We raced a little and his is sooo quiet until he gets WOT.
    That's how mine is. That crappy video doesn't do it justice, it sounds way different in person. I used to be a flowmaster fan until I installed the Magnaflow.
    2005 black Yukon XL SLT - traded in for me wife's new Fusion (GM sucks these days)
    2002 black Yukon SLT (the skinny sister)
    1969 green Pontiac GTO (Layla, AKA the black sheep)

    INSTALLS AND MORE.. http://www.ls1truck.com/forums/my-ga...-low-life.html
    Sticky/broken gauges? I can help. PM me for details.

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