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Thread: How Restrictive are the stock Mufflers? This much.....

  1. #51
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    Quote Originally Posted by walsfan View Post
    ^wow been thinking about switching from my current exhaust to this exact same setup...heard a video on YouTube and those vortex sound dam good
    You already know this (i.e., exhaust / muffler sounds are a "personalized taste" - no right answer - only a personal preference) but DAMN these sound good to me!

    a) It's got a deep rumble at start and at idle. Not loud just "deep."
    b) If you open the door - you can "definitely" hear the idle difference (i.e., deep and with bass). Shut the door - and the cabin is quiet.
    c) At low acceleration - you can't really hear it too much (my personal preference - I didn't want it "annoying")
    d) At overdrive and at low speed with windows down (i.e., 45mph) I could hear the rumble (not a drone). Windows up - gone.
    e) At WOT - Raw Fury! It sounded great! It was the sound of a very pissed off small block with a muffled scream! Again - Pure Sex!
    f) I don't now how long the mufflers will last (not stainless) - but hell they were only $55 each.
    g) My personal preference -- this is a damn nice setup. That darn Patrick Guerra "nailed it" with this setup.
    2009 G8 GT
    ARH Long Tubes 1 7/8" / Magnaflow Mid Muffler / Cherry Bomb Vortex Mufflers / Magnuson Supercharger 1.9 / Ported blower base / 2.8" Pulley / LS3 rockers with Trunion upgrade / Trick Flow LS3 cylinder heads / Overdrive "non-cog" pulley system / 8-Rib Pulley system / ATI Super Damper / DOD Delete / Lunati Lifters / Custom Patrick G Cam Grind / Wiseco Forged Pistons / Injector Dynamics 85lbs / 4" RotoFab Intake Tube / 90mm MAF Tube / VMax 90mm Ported Throttle Body / LS7 MAF Card / ZL1 Fuel Pump / JMS Fuel Pump Booster / VaporWorx Controller / B&M Tranny Cooler with fan / Circle-D Heavy Duty Rebuild & 265mm triple Disc Billet Converter / Camaro Tranny Pan / Custom Engine & Tranny Tune by Patrick G / Eibach Lowering Springs / BMR Front & Rear Sway Bars & LCA's / Moog Front Control Arms / DBA 4000xs Rotors / Hawks Ceramic Pads / Breyton BE Wheels

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  3. #52
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    Quote Originally Posted by hflores3 View Post
    Just got back from having the Magnaflow mid muffler and Cherry Bomb Vortex mufflers put on. No post dyno data "yet" .....but MAN DO THESE SOUND ABSOLUTELY GREAT!!! Not too loud. Good deep rumble. Sounds exotic. Minimal decibels into the cabin. No drone! Pure "fury" at WOT!!

    Guerra this one on you for sharing!

    I'm pleased by a factor of 100x!!!! So much so ....that I really need a sandwich, a cigarette and a nice nap!

    It sounds THAT good.


    Sent from my iPhone using Tapatalk
    This is great Henry! I've been wanting to do something similar with a mid-muffler ever since I borrowed one from Rick for a few days. Loved it! Just a matter of time and money!
    2009 Hot White G8 GT, CTS-V v1 fronts, Camaro 20's, BMR Sways, Eibach Springs, Rear Cradle bushings. GXP FE3's, BMR rear susp. Kooks 1 7/8 LT headers, RCR custom 3 exhaust, ported LSA blower, 2.38 pulley; Ported heads and TB; LS7 MAF, Racetec pistons, Scat rods, CTS-V crank; FAST 85 injectors; RCR Lunati cam: 223/238 .615/.601, 116 +2 LSA. CTS-V pump/VaporWorx cntlr. Built trans, Methanol injection. Rick Crawford built and tuned. Best 1/4 9.68 @142, 1.42 60'.

  4. #53
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    Quote Originally Posted by Doug Hilliard View Post
    This is great Henry! I've been wanting to do something similar with a mid-muffler ever since I borrowed one from Rick for a few days. Loved it! Just a matter of time and money!
    Ah yes! The golden rule! Casharoonies! This darn hobby "gulps" those "Benjamins" -- doesn't it?

    Before you make a move -- let me get this new exhaust setup run on the dyno. In this way I can provide you with "pre" & "post" data from the very same dyno / very same car. Perhaps it helps with your decision making?
    2009 G8 GT
    ARH Long Tubes 1 7/8" / Magnaflow Mid Muffler / Cherry Bomb Vortex Mufflers / Magnuson Supercharger 1.9 / Ported blower base / 2.8" Pulley / LS3 rockers with Trunion upgrade / Trick Flow LS3 cylinder heads / Overdrive "non-cog" pulley system / 8-Rib Pulley system / ATI Super Damper / DOD Delete / Lunati Lifters / Custom Patrick G Cam Grind / Wiseco Forged Pistons / Injector Dynamics 85lbs / 4" RotoFab Intake Tube / 90mm MAF Tube / VMax 90mm Ported Throttle Body / LS7 MAF Card / ZL1 Fuel Pump / JMS Fuel Pump Booster / VaporWorx Controller / B&M Tranny Cooler with fan / Circle-D Heavy Duty Rebuild & 265mm triple Disc Billet Converter / Camaro Tranny Pan / Custom Engine & Tranny Tune by Patrick G / Eibach Lowering Springs / BMR Front & Rear Sway Bars & LCA's / Moog Front Control Arms / DBA 4000xs Rotors / Hawks Ceramic Pads / Breyton BE Wheels

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  6. #54
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    How do these vortex mufflers bolt in? From the pics, I see no flanges or hangers.

  7. #55
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    Quote Originally Posted by gr8g8 View Post
    How do these vortex mufflers bolt in? From the pics, I see no flanges or hangers.
    Go to a muffler shop. They have "all" the needed hardware. Very inexpensive as well.

    If I recall correctly (it's been some time), they were able to use stock hangers.

    They have "all" that stuff.

    If you do go with the Vortex - keep in mind that the outer diameter of the exit pipes on the Vortex are a bit bigger. The stockers will not work. The muffler guy showed me up close. Fortunately, my measures suggested that I needed something lightly larger so ..... I had a set of larger exhaust tips in the trunk with me. Got them on eBay - cheap too. Handed him the exhaust tips. He was finished in 10 minutes later.

    This set up is louder, deeper, more bass, ........... Honestly, I get nice compliments from guys "routinely!" Lifts your spirits to hear that kind of stuff - you know?
    2009 G8 GT
    ARH Long Tubes 1 7/8" / Magnaflow Mid Muffler / Cherry Bomb Vortex Mufflers / Magnuson Supercharger 1.9 / Ported blower base / 2.8" Pulley / LS3 rockers with Trunion upgrade / Trick Flow LS3 cylinder heads / Overdrive "non-cog" pulley system / 8-Rib Pulley system / ATI Super Damper / DOD Delete / Lunati Lifters / Custom Patrick G Cam Grind / Wiseco Forged Pistons / Injector Dynamics 85lbs / 4" RotoFab Intake Tube / 90mm MAF Tube / VMax 90mm Ported Throttle Body / LS7 MAF Card / ZL1 Fuel Pump / JMS Fuel Pump Booster / VaporWorx Controller / B&M Tranny Cooler with fan / Circle-D Heavy Duty Rebuild & 265mm triple Disc Billet Converter / Camaro Tranny Pan / Custom Engine & Tranny Tune by Patrick G / Eibach Lowering Springs / BMR Front & Rear Sway Bars & LCA's / Moog Front Control Arms / DBA 4000xs Rotors / Hawks Ceramic Pads / Breyton BE Wheels

  8. #56
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    I like my Magnaflow Axle Backs, nice stainless tips, deep low tone not load.
    O9, G8 GT... Premium and Sport Pkgs
    VCM cai, BMR front & rear swaybars, front BMR swaybar end links, Magnaflow Axle Backs 16883, F5 Flashpaq 2845 - 91 Performance Tune, AFM off, and TM 50%. Holden V8/6.0 quarter panel Badge, Pontiac front & rear arrows with Holden lion insert (black & chrome), drilled/slotted rotors.

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