Did the headers cause this? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

DuhKoDuh · 05-22-2012, 10:19 AM

Ok so i got headers,cai, and a tune about a month ago... I noticed this problem about a week ago. When im driving normal speeds at 70mph my car sounds fine, but once i floor it I hear a tisking or swishing metal sound under my passenger seat almost. Its really embarrassing when people are riding in a 2011 Camaro SS and they hear such a terrible sound. and then from then on when I accelerate it makes the noise! :( whats wrong with it?

joey0480 · 05-22-2012, 10:20 AM

I believe that is normal. It is the sound of the headers

justa25thTA · 05-22-2012, 10:21 AM

maybe your exhaust is moving and hitting the tunnel brace?

DuhKoDuh · 05-22-2012, 10:23 AM

Quote:

Originally Posted by joey0480

I believe that is normal. It is the sound of the headers

its not normal, i know headers tick, but this sounds like a ragged out piece! it cant be right!

platinum ss · 05-22-2012, 10:27 AM

i hear of many ls3's having a slightly noisy tranny (including mine) but not l99's?

strych9 · 05-22-2012, 10:29 AM

Post up a video. Can't comment on what we can't hear.

DuhKoDuh · 05-22-2012, 10:29 AM

Quote:

Originally Posted by platinum ss

i hear of many ls3's having a slightly noisy tranny (including mine) but not l99's?

like it sounds so wrong, when im taking a girl out to eat or something i want give it hardly and throttle..

platinum ss · 05-22-2012, 10:31 AM

ya post a vid

DuhKoDuh · 05-22-2012, 10:33 AM

Quote:

Originally Posted by platinum ss

ya post a vid

i will when i get a chance..later today maybe.

S-eatin-grin · 05-22-2012, 10:36 AM

Could have a bad cat...I'd take it apart and inspect. Not throwing any codes? It should not be rattling and if it just started a week ago and wasn't present at first then it's not "normal". If a shop installed it take it back.

DuhKoDuh · 05-22-2012, 10:38 AM

Quote:

Originally Posted by S-eatin-grin

Could have a bad cat...I'd take it apart and inspect. Not throwing any codes? It should not be rattling and if it just started a week ago and wasn't present at first then it's not "normal". If a shop installed it take it back.

nope no codes, and i wont be touching it. I will take it back to ADM i guess..

MagnusKrans · 05-22-2012, 11:02 AM

I see that you have a L99, make sure your exhaust isn't hitting the transmission vent tube. Its a small metal tube on the passenger side that runs right next to the exhaust. I had a metallic rattling sound coming from under my passenger seat after I put my magnaflow 3" catback on and it turned out to be vibrating against that vent tube.

Bo White · 05-22-2012, 11:16 AM

My gxp does it especially on the dyno and thought it was wierd until I seen another gxp m6 on the Dyno at that one did the same thing.

SSlim · 05-22-2012, 11:34 AM

Check for exhaust leaks? Put it up on ramps have some one rev. Some times exhaust leak is hard to identify at idle. Just be careful not to burn yourself. Also check the vent tube mine was rubbing a little so had to push it up a hair.

05-22-2012, 10:19 AM	#1
DuhKoDuh Drives: 2011 Camaro 2SS/RS (Black) L99 Join Date: Aug 2010 Location: Pilot Point, Texas Posts: 2,185	Did the headers cause this? Ok so i got headers,cai, and a tune about a month ago... I noticed this problem about a week ago. When im driving normal speeds at 70mph my car sounds fine, but once i floor it I hear a tisking or swishing metal sound under my passenger seat almost. Its really embarrassing when people are riding in a 2011 Camaro SS and they hear such a terrible sound. and then from then on when I accelerate it makes the noise! :( whats wrong with it? __________________ Follow me on Instagram @C7Corvettes

05-22-2012, 10:20 AM	#2
joey0480 Drives: 2013 Evo X Join Date: Sep 2011 Location: New Jersey Posts: 562	I believe that is normal. It is the sound of the headers __________________ 2013 Evo X GSR (SSS, leather, exterior package)....stage 2 bro SOLD:Team L99 ADM Race Intake and Scoop Vmax Ported TB Borla-S axlebacks ARH 1 7/8 Long Tubes and Hi Flo Cats 160 Thermostat Pfdat front and rear sways and endlinks Gold Pearl Powdercoated calipers Gloss black CFD strut covers GM gill stripes ******** 12" Stealth Kicker Package

05-22-2012, 10:21 AM	#3
justa25thTA Drives: 2011 Camaro SS/RS LS3 Join Date: Aug 2010 Location: Texas Posts: 1,630	maybe your exhaust is moving and hitting the tunnel brace? __________________ Yeah, I'll get around to it...

05-22-2012, 10:27 AM	#5
platinum ss Brandon Gilpin Drives: 2011 Camaro SS / 2014 Fiesta ST Join Date: Dec 2011 Location: Huntsville ON Canada Posts: 282 View My Garage	i hear of many ls3's having a slightly noisy tranny (including mine) but not l99's? __________________ 2011 Camaro 1SS Platinum ed. ls3 k&n CAI, BBK LT's, MBRP Cat Back, Vengeance Racing Kaotic Camshaft, Melling oil pump, Norris Catch Can, dyno tuned By AGP Speed & Custom, msd coils, taylor cables, Vmax ported throttle body, strut brace, eibach springs, hurst ST shifter. Black on black, Private forged wheels, Oracle side marker lights, black tail light bezels, 3D Carbon body kit

05-22-2012, 10:29 AM	#6
strych9 I'll be back... Drives: Subaru, HD Road Glide Special Join Date: Apr 2012 Location: Omaha, NE Posts: 3,036 View My Garage	Post up a video. Can't comment on what we can't hear. __________________ Bye bye, Bumblebee! --------------------------------------------------------------------------------------- Build Journal My Garage GoPro Mic Hack

05-22-2012, 10:31 AM	#8
platinum ss Brandon Gilpin Drives: 2011 Camaro SS / 2014 Fiesta ST Join Date: Dec 2011 Location: Huntsville ON Canada Posts: 282 View My Garage	ya post a vid __________________ 2011 Camaro 1SS Platinum ed. ls3 k&n CAI, BBK LT's, MBRP Cat Back, Vengeance Racing Kaotic Camshaft, Melling oil pump, Norris Catch Can, dyno tuned By AGP Speed & Custom, msd coils, taylor cables, Vmax ported throttle body, strut brace, eibach springs, hurst ST shifter. Black on black, Private forged wheels, Oracle side marker lights, black tail light bezels, 3D Carbon body kit

05-22-2012, 10:36 AM	#10
S-eatin-grin Drives: 2013 2SS/RS AGM Join Date: Nov 2010 Location: WV Posts: 1,170 View My Garage	Could have a bad cat...I'd take it apart and inspect. Not throwing any codes? It should not be rattling and if it just started a week ago and wasn't present at first then it's not "normal". If a shop installed it take it back.

05-22-2012, 11:02 AM	#12
MagnusKrans Drives: 2011 1SS/RS L99 Join Date: Aug 2011 Location: Pensacola, FL Posts: 99	I see that you have a L99, make sure your exhaust isn't hitting the transmission vent tube. Its a small metal tube on the passenger side that runs right next to the exhaust. I had a metallic rattling sound coming from under my passenger seat after I put my magnaflow 3" catback on and it turned out to be vibrating against that vent tube. __________________ 2011 1SS/RS L99 VR - - Livernois 2c-hl cam, Livernois stage 2 heads, ported intake, ported TB, CAI intake, ADM scoop, Stainless Works 1-7/8" headers w/ hfc, Magnaflow 3" exhaust. - - 451 rwhp/411 rwtq - -

05-22-2012, 11:16 AM	#13
Bo White Drives: 2015 Summit White 2SS 1LE Join Date: Feb 2012 Location: Vance Alabama Posts: 8,019	My gxp does it especially on the dyno and thought it was wierd until I seen another gxp m6 on the Dyno at that one did the same thing. __________________ Retired wanna be cylinder head porter 2015 2SS 1LE Clutch reservoir, Vararam DRX, ported TB, TSP 2" headers, MGW shifter Totalled: 2010 1SS Wilkes Performance/Eagle 416 shortblock, TSP custom valvetrain, PRC 260 heads, Edelbrock Pro Flo 102, th400 swap, 8" PTC 5500 stall= 535/435 at the wheels tuned Gen 3 Performance and Dyno 10.97 @ 124 full weight in 3100 DA CamaroFest X

05-22-2012, 11:34 AM	#14
SSlim Drives: 2011 Cyber Grey 1SS/RS A6 Join Date: Aug 2011 Location: Needville TX Posts: 228	Check for exhaust leaks? Put it up on ramps have some one rev. Some times exhaust leak is hard to identify at idle. Just be careful not to burn yourself. Also check the vent tube mine was rubbing a little so had to push it up a hair. __________________ Whipple, GT9 cam, LS3 conversion, ZL1 pistons, ZL1 rods, Circle D converter, Stage 3 trans, Tuned by Pat G, CAI inc, TPS headers, posi mod, Dynomax bullet cat back, VMAX TB, ADM Scoop, RX catch can, Eibach prokit plus, Eurotek Mesh 33 wheels, P13w DRLs, Pioneer/Massive Audio/Vibe/JL interior goodies. 613 RWHP/596 TQ