SOLO HIGH FLOW CATS MAKING VERY STRANGE & UGLY NOISE ! - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

iom · 03-10-2011, 02:00 AM

this is a radle / suction type noise .

this only happens at take off & when i rev at 2000 rpms .

the entire car shakes .

anybody know what the heck is going on here ?

l99 with ground fx

CFD · 03-10-2011, 06:18 AM

Check to make sure everything is tight and seated properly. I had a similar noise in my car, I also noticed it after I had my Solo's for a while, it turns out that it was my resonator, doesn,t mean that's what's wrong with yours but you might want to check it out. I had mine on the rack and could easily hear it was from the resonator

jtzako · 03-10-2011, 08:18 AM

Make sure it is actually bolted properly
Make sure it is not touching the silver metal shielding under the car
Make sure the exhaust is not in contact with the Tunnel Cross Brace (metal panel that goes under the exhaust around the middle of the car)

Alfieboy · 03-10-2011, 12:57 PM

what ya find?..anything yet?

iom · 03-10-2011, 06:52 PM

Quote:

Originally Posted by CFD

Check to make sure everything is tight and seated properly. I had a similar noise in my car, I also noticed it after I had my Solo's for a while, it turns out that it was my resonator, doesn,t mean that's what's wrong with yours but you might want to check it out. I had mine on the rack and could easily hear it was from the resonator

i took it back to the guy who installed & he thinks its the resonator !

so i took it off and welded a straight pipe .

1. is the sound any better YES !!!!!

2. did this fix my problem NO !!!!!

iom · 03-10-2011, 06:54 PM

Quote:

Originally Posted by Alfieboy

what ya find?..anything yet?

well the only thing it could be is the cats them selvs , maybe i just got a bad set .

this kinda stuff always happens to me !!!!!!!!!!!

iom · 03-10-2011, 06:56 PM

Quote:

Originally Posted by jtzako

Make sure it is actually bolted properly
Make sure it is not touching the silver metal shielding under the car
Make sure the exhaust is not in contact with the Tunnel Cross Brace (metal panel that goes under the exhaust around the middle of the car)

I am most sure that its the flex pipe itself , it raddles real bad at 2000 rpms .

so 1 out of 2 things .

1. this is normal with a l99

2. i got a set of bad cats !!!!!

I WILL CALL SOLO TOMORROW AND SEE IF THEY CAN DO SOMETHING FOR ME !

CFD · 03-10-2011, 07:22 PM

Quote:

Originally Posted by iom

I am most sure that its the flex pipe itself , it raddles real bad at 2000 rpms .

so 1 out of 2 things .

1. this is normal with a l99

2. i got a set of bad cats !!!!!

I WILL CALL SOLO TOMORROW AND SEE IF THEY CAN DO SOMETHING FOR ME !

It is not normal for anything to rattle. I can't see how the mesh could rattle. I believe that Solo's have the cores welded in multiple spots to prevent them from loosening but it is possible. Did you listen to it on the lift to see if you could hear it from underneath? All was not for nothing, you got rid of the resonator and I'm sure it sounds much better without it, I know mine did.

first one · 03-10-2011, 10:04 PM

Sorry to hear this! Let us know what Solo does for you to help resolve the problem. How much louder does your exhaust get when deleting your resonators with solos?

edog · 05-01-2011, 08:46 AM

Did anyone find out what the rattle is? I am getting a loud vibration upon accelleration, which just started two days ago. It is not normal.

Scott@Bjorn3D · 05-01-2011, 08:52 AM

Quote:

Originally Posted by iom

I am most sure that its the flex pipe itself , it raddles real bad at 2000 rpms .

so 1 out of 2 things .

1. this is normal with a l99

2. i got a set of bad cats !!!!!

I WILL CALL SOLO TOMORROW AND SEE IF THEY CAN DO SOMETHING FOR ME !

Did he put an X-Pipe in where the resonator was? If not you just lost alot off the line since you are now down low end torque and HP.

edog · 05-01-2011, 12:52 PM

I will complete my Thorley system. Time for catback.

AzTeK · 05-06-2011, 12:43 AM

I would check the entire system from the cats all the way to the tips, because I had a similar noise on my passenger side and the problem was the High-flow cats have a slightly less clearance then the stock cats and my catback was touching the heat shield underneath which made a awful raddle on start-up and while driving but when I adjusted the catback to clear the heat shield the noise was gone completly

Dosin · 05-06-2011, 02:45 PM

I am installing my SOLO cats this weekend on my L99 A6. I hope I don't have the same problem. Keep us updated when you fix it regarding the cause.

03-10-2011, 02:00 AM	#1
iom Drives: 2010 camaro iom ss rs Join Date: Jul 2009 Location: los angeles ca Posts: 89	SOLO HIGH FLOW CATS MAKING VERY STRANGE & UGLY NOISE ! this is a radle / suction type noise . this only happens at take off & when i rev at 2000 rpms . the entire car shakes . anybody know what the heck is going on here ? l99 with ground fx

03-10-2011, 08:18 AM	#3
jtzako Drives: 2010 IBM Camaro SS Join Date: Jun 2007 Location: DFW, Tx Posts: 1,157	Make sure it is actually bolted properly Make sure it is not touching the silver metal shielding under the car Make sure the exhaust is not in contact with the Tunnel Cross Brace (metal panel that goes under the exhaust around the middle of the car) __________________ 2010 Camaro SS Imperial Blue \| CAI Inc, CAI \| Solo Hi Flow Cats \| X-Pipe \| Backup Camera \| PDIM

03-10-2011, 10:04 PM	#9
first one Drives: SSRS - black, GFX, SSX wheels Join Date: Aug 2009 Location: IN Posts: 936	Sorry to hear this! Let us know what Solo does for you to help resolve the problem. How much louder does your exhaust get when deleting your resonators with solos? __________________

05-01-2011, 08:46 AM	#10
edog Drives: 2010 2SS/RS IOM Join Date: Oct 2008 Location: F'BURG VA Posts: 3,832 View My Garage	Did anyone find out what the rattle is? I am getting a loud vibration upon accelleration, which just started two days ago. It is not normal. __________________ Update...Build in process, Forged Rods, Pistons and rings, Johnson Lifters, NOVI1500 ECS SC, 13lb boost or more, LS3 Conversion 114/228/241 COMP CAM, Frostbite 4 row Aluminum radiator, 6L80 built, Circle D 6L80 PRO SERIES MULTI 258MM 2D, Stock 3.45 gears, 1-7/8 American Racing Headers w/HF cat, X-Pipe, Lingenfelter dual fuel pump, E-85 flex sensor, ATI super damper pulley, Ported TB, 160 therm, Trans cooler, Pedder's sways/end links/sub frame bushings, BMR trailing arms & toe rods, Coil overs. HP/TQ pending

05-01-2011, 12:52 PM	#12
edog Drives: 2010 2SS/RS IOM Join Date: Oct 2008 Location: F'BURG VA Posts: 3,832 View My Garage	I will complete my Thorley system. Time for catback. __________________ Update...Build in process, Forged Rods, Pistons and rings, Johnson Lifters, NOVI1500 ECS SC, 13lb boost or more, LS3 Conversion 114/228/241 COMP CAM, Frostbite 4 row Aluminum radiator, 6L80 built, Circle D 6L80 PRO SERIES MULTI 258MM 2D, Stock 3.45 gears, 1-7/8 American Racing Headers w/HF cat, X-Pipe, Lingenfelter dual fuel pump, E-85 flex sensor, ATI super damper pulley, Ported TB, 160 therm, Trans cooler, Pedder's sways/end links/sub frame bushings, BMR trailing arms & toe rods, Coil overs. HP/TQ pending

03-10-2011, 06:18 AM	#2
CFD Drives: 2SS/RS L99 BLACK Join Date: Apr 2010 Location: Franklin , MA Posts: 6,696	Check to make sure everything is tight and seated properly. I had a similar noise in my car, I also noticed it after I had my Solo's for a while, it turns out that it was my resonator, doesn,t mean that's what's wrong with yours but you might want to check it out. I had mine on the rack and could easily hear it was from the resonator

03-10-2011, 12:57 PM	#4
Alfieboy Madman Drives: 2017 1SS Join Date: Jun 2009 Location: RICHMOND VA Posts: 1,405 View My Garage	what ya find?..anything yet?

05-06-2011, 12:43 AM	#13
AzTeK Drives: 2011 Camaro SS Join Date: Aug 2010 Location: RGV, Texas Posts: 77	I would check the entire system from the cats all the way to the tips, because I had a similar noise on my passenger side and the problem was the High-flow cats have a slightly less clearance then the stock cats and my catback was touching the heat shield underneath which made a awful raddle on start-up and while driving but when I adjusted the catback to clear the heat shield the noise was gone completly

05-06-2011, 02:45 PM	#14
Dosin Drives: 2010 2SS RS black ground effects Join Date: Oct 2010 Location: St. Louis MO/Quincy IL Posts: 175	I am installing my SOLO cats this weekend on my L99 A6. I hope I don't have the same problem. Keep us updated when you fix it regarding the cause.

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