05-14-2010, 12:10 PM | #1 |
Drives: '10 Camaro 2SS/RS Black Join Date: Jul 2009
Location: Wichita Falls, TX
Posts: 257
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Flowmaster American Thunder CB L99
Does anyone have this system for their L99? I see in the picture at flowmaster.com that they have removed the resonator section and it is just straight pipes. So this leads me to believe they have not taken into account of the AFM droning when turned on.
Is there any Flowmaster guys here that has more information about the L99 system. I really like the sound but I can't handle the drone (I have previous experience with another system and put the stock back on). I'm thinking the best case is to just get an Axle back system only. Thoughts or videos from people that have the American Thunder (409S?) on their L99 would be grateful. PS, Trust me I know what you are all thinking and yes I'm blaming my wife, a tune is out of the question. LOL
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2SS/RS A6 L99 - Black w/White Stripes
K&N Air Intake System Muffler Delete |
05-14-2010, 01:28 PM | #2 |
Drives: 2010 Chevrolet Camaro Join Date: Dec 2009
Location: Lubbock, Texas
Posts: 68
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I plan on going with this same system and a local performance shop here is going to delete AFM with HP Tuners for about $75. That will solve the problem and no affect on tune. However, I'm not sure if the AFM delete for void the GM warranty!!!!!!
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05-14-2010, 02:14 PM | #3 |
Drives: Everywhere Join Date: Jun 2008
Location: TX
Posts: 852
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I think Bigtex686 had it untuned for a while and it wasn't horrible. Too quiet for my taste but not bad now that he has a cam, LTs and a tune.
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05-14-2010, 02:17 PM | #4 | |
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Quote:
Any modification to the stock computer tune = void powertrain warranty IF they catch it. Just the fact that the stock settings have been changed (no matter what the change may be, i.e., AFM, rev limiter, CAGS or skip-shift removal, etc.) = void powertrain warranty IF they catch it. It's all about risk/reward.
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DT Shorties, Solo hi-flow Cats, X-pipe, resonator delete, Flowmaster Super-44s, VMAX TB, Stronger MAF, C.A.I. Intake with race scoop, and JRE Tune!
WOT is my happy place!! |
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05-14-2010, 03:22 PM | #5 |
Drives: 2014 1SS NPP 1LE Join Date: Mar 2010
Location: Staten Island
Posts: 163
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Flowmaster American Thunder CB L99
I have just installed the Flowmaster American Thunder Kit 817481 on my L99 and really love the sound. I did not notice alot of drone in the car at all. I did notice in Sport Mode when paddle shifting from 6th down to 5th there was a little drone but once I got back on the gas all it was fine.
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05-14-2010, 03:23 PM | #6 |
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nice
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Jannetty Racing JRE Street Package
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05-14-2010, 04:08 PM | #7 |
Drives: 2012 ZL1 - #670 Join Date: Jun 2009
Location: Seminole, Fl.
Posts: 8,009
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Mine is the LS3 with the FlowMaster, and in 6th running at 65 I get drone. It really doesn't get on your nerves at all, just up the volume on the tunes and all is good. IMO the deep tone is worth the little bit of drone at certain speeds, just avoid the speed where you get it.
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05-14-2010, 05:10 PM | #8 |
Account Suspended
Drives: 2010 2SS/RS A6 SW/IOM Join Date: Apr 2010
Location: Wesley Chapel FL
Posts: 692
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Installed it today love the sound, so far it seems the drone noise is when the AFM kicks in. If you shift with the paddles you can keep it from kicking in with RPM's.
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05-14-2010, 06:37 PM | #9 |
Drives: '17 Fifty SS - '18 Traverse Redline Join Date: Jul 2009
Location: Northern Virginia
Posts: 3,616
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I would love to hear what that sounds like ...... I bet it sound nice.
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2017 Camaro SS -"FIFTY"
Mods: "93 Octane" |
05-14-2010, 07:10 PM | #10 |
Here but not really here.
Drives: 2010 IOM Camaro 2SS/RS M6 Join Date: Sep 2009
Location: 33°58'45"N/118°1'54"W
Posts: 698
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Anyone got updated video? Ive seen enough the repeated ones on YT and would like some new material to get me to pull the trigger even sooner to put on my LS3..
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05-14-2010, 08:54 PM | #11 |
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Wish I could help, but I tuned out my AFM before I installed my Flowmaster catback.
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2020 Range Rover Sport HSE P525 Supercharged 5.0 - Firenze Red - 9012 wheels
SOLD 2019 Camaro SS -Wrapped in Matte Magnectic Black - Anderson Carbon Hood and Rear Spoiler – Ikon front spoiler – OEM ZL1 Side Rockers - ZL1 Addons Diffuser - BMR 1.0” Lowering Springs - MRR 228 Wheels 20x10 and 20x11 RIP 2016 Camaro SS https://www.camaro6.com/forums/showthread.php?t=565453 SOLD 2010 Camaro SS Featured in GM High Tech Performance and Camaro Now Magazines - http://www.superchevy.com/features/g...of-perfection/ |
05-14-2010, 09:12 PM | #12 |
NOW CAMMED & SUPERCHARGED
Drives: 2010 Camaro 2SS/RS Black w/ IOM Join Date: Oct 2008
Location: Ar
Posts: 2,336
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I have noweed diverters and I deff had to turn off the afm
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Livernois Motorsports: Maggie 2300 7psi, Livernois 2C cam/L99 to LS3 Conversion, Ported TB, Rotofab w/adm race scoop, adm trans cooler,Kooks headers no cats, Kooks 3" exhaust. METCO breather. Precision 2400 Vigilante TC. Eibach Lowering Springs & Swaybars. BMR Trailing arms, BMR Rear Cradle Bushings, BMR Toe Rods, BMR Differential bushings. Vossen CV3 20's w/ 305 Mickey Thompson @25psi. Zl1 front bumper. OE Zl1 Hood and matte black insert. 556RWHP/500RWTQ L99
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05-15-2010, 12:59 PM | #13 |
Drives: 2010 Chevrolet Camaro Join Date: Dec 2009
Location: Lubbock, Texas
Posts: 68
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Does anyone know what muffler series come with the Camaro SS V8 American Thunder Exhaust Kit?
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05-15-2010, 01:12 PM | #14 |
aka Patrick
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I need to hear more video sound clips of the American Thunder Flowmasters with & without different headers before I make up my mind.
The like 1 and only video clip around with Headers has that 40 series ping sound that I love so much..... Wonder if it was just a fluke Plzzzz who ever has them installed take some video clips of drive by, idle, reving and launches Every video i watch they have a slightly different tone
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Current Modifications: Your average Bolt-ons & Suspension Upgrades
GForce Engineering: 9" Rear End, Strange Pro Iron Case w/Moser Nodular 3.70:1 Detroit locker, 3.5" Solid Drive Shaft Last edited by Ject; 05-15-2010 at 03:07 PM. |
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