How much supercharged rwhp before high flow cats melt? - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

UNRIVALED SS · 06-05-2016, 07:39 PM

Are you guys just removing the cats or punching a 3" hole in them and putting them back on?

Batmanntexas · 06-05-2016, 07:44 PM

I removed mine, then used a long 3/8" extension and hammer, driving the extension through the catalyst in multiple places. Once I had a few holes, I switched over to a long metal cold chisel. End result was my cats being completely devoid of any catalyst material. Took me about 2 hours to do both of mine.

Unreal · 06-05-2016, 08:26 PM

I don't see a need to destroy good parts that are worth good money.

silverz28 · 06-05-2016, 08:35 PM

I got some straight pipes that looks like cats. I don't think it's a good idea to run any cats over 600 hp with a supercharger.

1KillerSS · 06-05-2016, 09:16 PM

Quote:

Originally Posted by UNRIVALED SS

Are you guys just removing the cats or punching a 3" hole in them and putting them back on?

They make look a like cats that are straight pipe, but when you look at them they look like cats. I think Texas Speed makes them.

Quote:

Originally Posted by Unreal

I don't see a need to destroy good parts that are worth good money.

Hell yea, there worth at least 100 bucks on C5 anyway. If you take them to a scraper you wont get jack for them.

Dirtdog · 06-06-2016, 12:06 AM

Quote:

Originally Posted by 1KillerSS

Hell yea, there worth at least 100 bucks on C5 anyway. If you take them to a scraper you wont get jack for them.

I cant get rid of my old cats to save my life. been trying for a while. junkers around here want some sort of proof I didn't steal them.

1KillerSS · 06-06-2016, 02:20 AM

Quote:

Originally Posted by Dirtdog

I cant get rid of my old cats to save my life. been trying for a while. junkers around here want some sort of proof I didn't steal them.

Damn, I had an offer for my cats a while ago, for 100 bucks, i thought, na, they gotta be worth more than that.....LOL What the hell did I know, I should have taken it. I did end up selling them to a scraper, and yea, the scrap yard wanted proof they were mine....different times man.

ImJustHereForParts · 06-06-2016, 11:39 PM

Quote:

Originally Posted by todd69gs

What's the safe limit for high flow cats on a supercharged ls3? I've read about meltdowns and I am curious.
.....and for guys that have them removed how bad is the fuel smell?

definitely wouldn't leave it running anywhere thats not open to the environment. I wouldn't say it smells "bad" it's more of a "strong" odor, idk i like the smell of exhaust

todd69gs · 06-07-2016, 03:25 AM

Quote:

Originally Posted by ImJustHereForParts

definitely wouldn't leave it running anywhere thats not open to the environment. I wouldn't say it smells "bad" it's more of a "strong" odor, idk i like the smell of exhaust

Yeah I know what you mean. I have a 69 GS so I'm familiar with the smell. I'm sure it's not as bad w fuel injection but I'd like to make good power with my camaro and not deal w the smell.

2010SSRSM6 · 06-07-2016, 03:59 AM

Mine melted @ 590rwhp. Long drill bit and electric drill and they were cleaned up pretty quickly.

Outlaw77 · 06-08-2016, 02:28 PM

I hadmy kooks hi flows removed once I had the cam and supercharger installed. They were in good shape. I love the smell now.

TitusSS · 06-08-2016, 03:23 PM

at 650 HP both of my Magnaflow CATs blew out. One disappeared without a trace which is awesome but the other one clogged up half my exhaust right before the muffler. If not for the crossover pipe I would have blown my motor.

1KillerSS · 06-08-2016, 04:09 PM

I remember a good conversation I had with a pretty smart guy about this exact topic. He explained to me what exactly causes the cats to fail. And according to him, its not how much power.

Its a good read. Blueclyde explains it quite well.

http://www.camaro5.com/forums/showthread.php?t=379024

1985airborne · 06-08-2016, 09:17 PM

my cats melted at 590rwhp

06-05-2016, 07:44 PM	#16
Batmanntexas Drives: 2012 Camaro SS (2SS) Join Date: Aug 2012 Location: Stafford, VA Posts: 1,374 View My Garage	I removed mine, then used a long 3/8" extension and hammer, driving the extension through the catalyst in multiple places. Once I had a few holes, I switched over to a long metal cold chisel. End result was my cats being completely devoid of any catalyst material. Took me about 2 hours to do both of mine. __________________ 745RWHP/634RWTQ on 93 @ 10psi 806/676 on E85 @ 10psi COTW 9/8/14

06-05-2016, 08:26 PM	#17
Unreal Drives: 2006 Z06 Join Date: Oct 2010 Location: Gilbert, AZ Posts: 5,712	I don't see a need to destroy good parts that are worth good money. __________________ Nick Corvette Z06 -1200ish rwhp

06-05-2016, 08:35 PM	#18
silverz28 Drives: 1996 Camaro Z28, 2012 2SS/RS Join Date: Aug 2012 Location: Texas Posts: 279	I got some straight pipes that looks like cats. I don't think it's a good idea to run any cats over 600 hp with a supercharger. __________________ 2012 2SS/RS IOM, LS3, Aftermarket Hurst shifter, IOM interior, Borla "S", 1 7/8 Big Flow headers, ADM Race cold air, BMR 1" lowering springs, SLP Supercharger, Custom Comp Cam, Fore Innovations twin pumps, Flex Fuel Sensor

06-07-2016, 03:59 AM	#24
2010SSRSM6 Drives: My wife crazy with my C5 usage. Join Date: Apr 2009 Location: DFW Posts: 6,558 View My Garage	Mine melted @ 590rwhp. Long drill bit and electric drill and they were cleaned up pretty quickly. __________________ UNDER CONSTRUCTION......again......

06-08-2016, 04:09 PM	#27
1KillerSS Too much is never enough! Drives: AGP TT SS [COTW] 4/20/15 Join Date: Feb 2014 Location: Toledo,OH Posts: 4,149 View My Garage	I remember a good conversation I had with a pretty smart guy about this exact topic. He explained to me what exactly causes the cats to fail. And according to him, its not how much power. Its a good read. Blueclyde explains it quite well. http://www.camaro5.com/forums/showthread.php?t=379024 __________________ AGP TT kit, 54/57 Forged rotating assembly, Custom grind cam... Dual nozzle meth, ID850's, Livernois dual fuel pumps, ECS BAP, 25% UDP, 3 inch Magnaflow catback with X pipe, Mantic 9000 clutch, DSS 1000hp axles, DSS aluminum driveshaft, ZL1 rear end, solid subframe bushings, HE differential offset bushings, BMR Trailing arm, BMR toe rods, Lingenfelter LNC-2000,SJM Line Lock. 747 whp 714wtq *Build thread* http://www.camaro5.com/forums/showth...55#post8107855

06-05-2016, 07:39 PM	#15
UNRIVALED SS Drives: 2010 Camaro SS Join Date: Aug 2010 Location: El Paso Posts: 704 View My Garage	Are you guys just removing the cats or punching a 3" hole in them and putting them back on?

06-08-2016, 02:28 PM	#25
Outlaw77 Drives: 2018 Charger SRT 392 F8 Green Join Date: Aug 2010 Location: Oakville Ontario, Canada Posts: 1,910	I hadmy kooks hi flows removed once I had the cam and supercharger installed. They were in good shape. I love the smell now.

06-08-2016, 03:23 PM	#26
TitusSS Drives: ECS Supercharged 2010 SS Join Date: Oct 2012 Location: Spring Posts: 121	at 650 HP both of my Magnaflow CATs blew out. One disappeared without a trace which is awesome but the other one clogged up half my exhaust right before the muffler. If not for the crossover pipe I would have blown my motor.

06-08-2016, 09:17 PM	#28
1985airborne One Slow Automatic Drives: 2017 GS 2010 CAMARO SS Join Date: Mar 2010 Location: NC NJ NY DMV THE BAYAREA Posts: 877	my cats melted at 590rwhp __________________ 650HP 2010 CAMARO SS 710HP 2017 GRAND SPORT