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07-19-2011, 08:08 PM
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#1 |
 
Drives: Black 2010 2SS/RS L99 Join Date: Feb 2010
Location: Alpharetta, GA
Posts: 94
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Borla S axleback on L99 with AFM off - drone
I have the Borla S axle back system on my L99, with AFM turned off. I also have the CAI Inc. Cold air intake.
The sound of the exhaust is amazing compared to stock, however there is quite a bit of drone between 1500 and 1900 rpm. Note that I already have AFM turned off. Would DynaPad in the trunk help to reduce the drone noise level in the cabin?
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07-19-2011, 11:12 PM
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#2 |
 Drives: 2011 ss rs Join Date: Dec 2010
Location: simi valley ca
Posts: 28
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Please see this link. This is a must if you have drone. I bought 2 j-bends and 1 u-bend from Jegs and cut them up for the fabrication. Any muffler shop should be able to weld it up.
http://www.camaro5.com/forums/showpo...&postcount=188 |
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07-20-2011, 06:02 AM
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#3 |
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07-20-2011, 07:29 AM
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#4 |
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Account Suspended
Drives: SS/RS Join Date: May 2010
Location: Transplanted from NYC..(ret. NYPD).Now in CT
Posts: 904
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dyna matt the trunk and the back seat!
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07-20-2011, 07:53 AM
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#5 |
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502 RWHP N/A
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Turn the radio up
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factory motor factory trans, Gpi ss4 cam stock heads ported and milled, full exhaust, circle d 5c 4000 triple disk, 3:91 rear end with posi mod, cai, bmr derlin rear diff bushins, bmr derlin cradle bushins, bmr trailing arms, toe rods with bushings, and bmr anti extreme sway bar. Weld rt-s 17x5 fronts and 17X10 rears on mickey thompson et street r's
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07-20-2011, 10:38 AM
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#6 |
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v It bites.
Drives: 2011 IBM 2SS/RS Join Date: May 2008
Location: Orlando, FL
Posts: 3,585
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The drone is not that bad at all, had this exact setup for 8 months... if you don't like that, do NOT go for headers or catback. Any additional performance mod will increase the volume in most cases...Axle back, even with the S type with the L99 resonators and AFM off, may be one of the most mild exhausts.
Like sasquash said, on the highway... turn your radio up. Highway driving you cannot enjoy the tone of your exhaust anyways. Once you get back on the city streets, then you enjoy the exhaust. I have watched people buy the dynamat, and did not get the results they wanted after hours of install.... the only other alternative is to buy a Honda.
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2011 2SS/RS
Performance: 439 RWHP: 226/236 Comp Cam, Kooks 1-7/8, CAInc, Borla S type, Vmax TB, Rx Catch Can, Trans cooler, SLP 160 termo, Melling high volume, Eibach Springs/Sways 1" drop, Whiteline complete bushing kit. |
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07-20-2011, 10:59 AM
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#7 |
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LS3 and L99 are prone to the 1500-2000rpm drone. there is no 100% solution other than keep stock
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07-20-2011, 11:49 AM
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#8 | |
 
Drives: 2011 Camaro 2SS Join Date: Jul 2011
Location: PA
Posts: 194
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Quote:
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07-20-2011, 12:02 PM
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#9 |
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Call Solo and order a set of their J pipes. I had drone with my set up, Borla S type cat back and Kooks headers. Once I added the J pipes drone was completely gone in that 1500-2000 rpm range. I have an LS3 though.
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07-20-2011, 12:09 PM
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#10 |
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100% Chevy & Harley Man
Drives: 2010 2SS: Blown LSX 376-B15 Join Date: Feb 2009
Location: Eldersburg,MD
Posts: 2,211
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I have the Borla catback (S-type) system. The drone is usually only noticeable during acceleration. Much rather live with that then the quietness of a stock setup. Plus, I needed to change exhaust due to other mods.
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LSX 376-B15, TVS2300 SC, Harland Sharp Rockers w/ Trunion Bearings, ATI Balancer/keyed, AR LT Headers/Borla Catback Exhaust, DSS 1400 HP Axles, DSS aluminum driveshaft, 3.70, Hotchkis Springs/Sway bars, Forgeline SO3P Aluminum Wheels (20x9.5 F/20x11 R)w/ Hidden Titanium Hardware, Nitto NT05 Tires (27540ZR20 F/31535ZR20 R), Billet LPE brake/gas pedals, Escort 9500ci Radar Detector Laser Jammer, Roto Fab CAI with Ice Silver box, Carbon fiber tube/MAF Housing Assy, LPE Aluminum coil covers, SS9 Sleeper Fiber Glass Hood (ACS), Carbotech 1521 ceramic brake pads, Elite catch can.
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07-20-2011, 12:23 PM
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#11 | |
Drives: SUMMIT WHITE 2SS/RS CAMARO Join Date: Feb 2008
Location: 2018: Lakewood Ranch, Fl.
Posts: 8,112
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Quote:
Great deep rumble and no tune on my L99. Of course my fully insulated unibody (Dynamat) helps. Great sound outside but oh so quiet inside.... 
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07-20-2011, 02:57 PM
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#12 | |
 Drives: 2010 2SS IBM L99 Join Date: Apr 2010
Location: Livonia, Mi
Posts: 274
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Quote:
I'm with the "J" pipe guys.... either Solo or custom made, I've heard good things about them. I started about the same as you but with Touring axleback and AFM tuned off. Then I had my stereo guys throw some Dynamat in the truck, didn't do much at all but I didn't cover the whole trunk. Now I have headers, CAI, and full Borla Touring. If you don't like the drone now it will be worse with Headers. It's not too bad for me, but crusing about 52-55 mph (my drive to work) it can get sorta bad. Nice thing is at 72-75 highway cruising it's barely noticable..... I might try a custom "J" pipe eventually. Good luck! |
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