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11-07-2015, 11:21 AM
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#1 |
 Drives: Camaro SS Join Date: Oct 2013
Location: Ft Carson
Posts: 55
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Rattle from underneath w/out a tunnel brace
I have a 2011 SS with Headers, Hi-flow cats, and Borla Atak exhaust. The noise occurs at take off mainly in first, when shifting into 2nd/3rd gear at low RPMs (parking lots/neighbor hood rd). At first I thought it may have been the Brace suggested on other post. I tried using "spacers" still occurred recently took off the brace completely and the sound is still there! Any suggestions? TIA
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11-07-2015, 12:39 PM
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#2 |
 
Drives: 2013 Camaro SS Coupe L99 Join Date: Feb 2013
Location: North Pole Alaska
Posts: 393
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May be hitting the heat shield, check to see how close your exhaust pipes are from front to back as far as clearance goes. May just need a slight adjustment
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11-07-2015, 01:18 PM
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#3 |
        
Drives: 73 VETTE ,, 05 2500hd diesel,14 1LE Join Date: Feb 2014
Location: The Left lane PHOENIX AZ
Posts: 2,626
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Are the headers touching the steering shaft when you let the clutch out under acceleration ?
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OLD GUY FLYING FAST AND LOW
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11-07-2015, 06:45 PM
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#4 |
 
Drives: 2SS/RS black with yellow stripes Join Date: Jul 2012
Location: New Braunfels, Texas
Posts: 16
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Something similar and maybe even the same thing happened to me when installed a set of ARH 1-7/8 LTs. Mines a 2011 as well and it made this rattling noise upon takeoff just like you're talking about and it turned out to be this stud that sticks out from the passenger side fender that was hitting one of the header tubes. You might want to take a look. It's easy to see the stud by just looking under the hood. All I did was just saw a bit of it off and that did the trick.
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11-07-2015, 10:18 PM
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#5 |
   
Drives: 2017 2SS M6 Join Date: Jun 2013
Location: WNY
Posts: 7,070
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I had the same thing happen as CamaroFan22 just cut the stud off.
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real ZL1 wheels and brakes, 285/305 Michelin Pilot Super Sports, Pray ported Intake manifold, Soler Throttle Body, Rotofab intake, EFI Tuning Flex fuel kit, full American Racing Headers Exhaust, 1 7/8" w/ cats H pipe and mufflers. Full 1LE suspension, with BMR adjustable sway bars and links, GM aluminum cradle bushings, Hurst shifter with lighter reverse spring, TWM shifter knob, Tick level 1 transmission. I should have bought a ZL1
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11-07-2015, 11:15 PM
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#6 |
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WHAT RED LIGHT?!
Drives: 2011 Black Camaro 2SS/RS M6 Join Date: Apr 2011
Location: Miami, Florida
Posts: 1,115
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Take it to a muffler shop and have them diagnose it for you. Could be a hanger, defective muffler or cat. At the very least they can weed the exhaust out, but imo its within the exhaust's cat back.
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2011 2SS/RS M6 BLACK - VARARAM NO TUNE INTAKE, MODDED AND PORTED TB, PORTED INTAKE MANIFOLD, VITESSE THROTTLE CONTROLLER, DOUG THORLEY LT'S, CATLESS, X-PIPE, 25" STAINLESS WORKS RETRO CHAMBERED MUFFLERS, CUSTOM 2.5" MANDREL BENT EXHAUST, RICHMOND 4.10 GEARS, CUSTOM CAM (231/242 @ 114LSA), MUSTANG DYNO TUNED BY TORQ, 20% CERAMIC TINTS, EIBACH PROKIT SPRINGS 1" DROP, HAWK PERFORMANCE CERAMIC BRAKES, NITTO INVO TIRES, HYDROCARBON TAIL LIGHT AND FOG LIGHT BEZELS BY EMBLEMPROS, METRA DASH KIT, JVC KW-AV71BT, PHOENIX GOLD iAMP GM1, PASSPORT QI45 - 450 RWHP 415 RWTQ
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