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Thread: Dyno'd " Project Sucker Punch"

  1. #11
    Join Date
    Oct 2011
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    San Antonio TX
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    A 5x11" magnaflow will do you good. Or as its better known the 22" big body magnaflow. Quiet on cruise and loud at wot.


    4.8, TSP 220, 6L90 swap, 3400 Stall, 4.10s w/30" drag radial and T76 @ 16lbs.
    Best ET 11.54@114 w 1.52 60ft
    Raceweight 4905 lbs.

  2. #12
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    Mar 2011
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    Gibbstown, NJ
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    Quote Originally Posted by RS/SS 4.8 View Post
    A 5x11" magnaflow will do you good. Or as its better known the 22" big body magnaflow. Quiet on cruise and loud at wot.

    Do you have one of these mufflers on your truck?? I have been looking into changing my truck over to a magnaflow system.

  3. #13
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    Oct 2011
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    San Antonio TX
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    Yup. Heres a link to kinda see what it sounds like.

    http://s1078.beta.photobucket.com/us...01433.mp4.html

    Actually it might not help because its dumped before the axle. On my brothers boosted 5.3 the same muffler is quiet enough to hear the turbo spool at full throttle with the windows closed lol.
    Last edited by RS/SS 4.8; 03-07-2014 at 09:24 PM. Reason: link no work


    4.8, TSP 220, 6L90 swap, 3400 Stall, 4.10s w/30" drag radial and T76 @ 16lbs.
    Best ET 11.54@114 w 1.52 60ft
    Raceweight 4905 lbs.

  4. #14
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    Mar 2011
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    Gibbstown, NJ
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    685
    Quote Originally Posted by RS/SS 4.8 View Post
    Yup. Heres a link to kinda see what it sounds like.

    http://s1078.beta.photobucket.com/us...01433.mp4.html

    Actually it might not help because its dumped before the axle. On my brothers boosted 5.3 the same muffler is quiet enough to hear the turbo spool at full throttle with the windows closed lol.
    Sounds good what are your cam specs? ( PM them i you would )

  5. #15
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    Oct 2011
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    San Antonio TX
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    Cam specs are TSP 220/581/112. Its a little big for a 4.8 even with a 3200 stall it could use a 3600 or a 4000 stall because it starts to really shine at about 3800 rpm.


    4.8, TSP 220, 6L90 swap, 3400 Stall, 4.10s w/30" drag radial and T76 @ 16lbs.
    Best ET 11.54@114 w 1.52 60ft
    Raceweight 4905 lbs.

  6. #16
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    Mar 2011
    Location
    Gibbstown, NJ
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    Quote Originally Posted by RS/SS 4.8 View Post
    Cam specs are TSP 220/581/112. Its a little big for a 4.8 even with a 3200 stall it could use a 3600 or a 4000 stall because it starts to really shine at about 3800 rpm.
    Do you have any driving vids with muffler on it?

  7. #17
    Join Date
    Feb 2011
    Location
    Pittsburgh, PA
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    Im about to throw my XL magnaflow on the saab, ill take before and after for you but idle shouldnt change much.
    2004 Avalanche pewter/black Cammed, Stalled, SOLD!
    2009 Saab 9-7x Aero, Diamond Silver 1 of 21

  8. #18
    Join Date
    Sep 2008
    Location
    Arizona/Utah
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    Quote Originally Posted by we_fly_high View Post
    Im about to throw my XL magnaflow on the saab, ill take before and after for you but idle shouldnt change much.
    Not a fan of the XL models. They are not true straight thru flow.
    ECSB 2kSierra 2wd 4.8L-K&N-HPtuners-Calspeed LT's-Magnaflow-Tahoe20's-HankookRH06

    waiting to go in... 3.90s, 214/220cam

  9. #19
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    Feb 2011
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    Pittsburgh, PA
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    I bought it for $30, brand new so no worries. This one is straight through, ill take a pic tomarrow but its just the round one.
    2004 Avalanche pewter/black Cammed, Stalled, SOLD!
    2009 Saab 9-7x Aero, Diamond Silver 1 of 21

  10. #20
    Join Date
    Mar 2011
    Location
    Gibbstown, NJ
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    I have been looking into swapping out my muffler system now for quite some time, I did the efans on the truck yesterday...... Not really sure my butt dyno noticed the difference, but my ears did, no more thermal fan chopping the air....( ok, maybe a slight hp increase in the top end with the efans, but for free it was a great gain, and a lot more engine room ) but if there is any way I can see /hear some driving vids with these magnaflows that would be great, and I'm not too worried about idle sound as I run a 114lsa, so it's not very lopey to begin with. It was my old boost cam and I am looking to swap out to a bigger cam, how big is safe before my PV clearance is gone

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