Check your cats... - Page 4 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

IROCanSS · 11-21-2011, 11:44 AM

I don't think cats are too hard to "gut".

TCAT · 11-21-2011, 11:46 AM

Didn't a manufacturer make cats that looked stock, but were completely gutted (maybe they were just high flows)? Was that ADM?? I can't find the link to purchase them though.

2L82RUN · 11-21-2011, 12:03 PM

Quote:

Originally Posted by JANNETTYRACING

If they existed

HufferSS · 11-21-2011, 12:35 PM

Quote:

Originally Posted by TCAT

Didn't a manufacturer make cats that looked stock, but were completely gutted (maybe they were just high flows)? Was that ADM?? I can't find the link to purchase them though.

It was TSP but it was for their headers...not sure if they would work with yours..depends on your headers.

Gutting a set of cats is about as hard as unzipping your fly so if you can do that then you are probably good. Many vendors sell test pipes with their headers too...no cats at all.

RED DEMON SS · 11-21-2011, 12:40 PM

So if my goals next week are 520 to 540 at the wheels i should not worry about my cats or high flow cats?

TCAT · 11-21-2011, 01:05 PM

Quote:

Originally Posted by HufferSS

It was TSP but it was for their headers...not sure if they would work with yours..depends on your headers.

Gutting a set of cats is about as hard as unzipping your fly so if you can do that then you are probably good. Many vendors sell test pipes with their headers too...no cats at all.

Lol, thanks man. That sounds easy enough.

69 Rebel · 11-21-2011, 01:58 PM

Quote:

Originally Posted by farthestnorth

So if my goals next week are 520 to 540 at the wheels i should not worry about my cats or high flow cats?

I think most of the failures occured on cars above 600rwhp. But why waste the money now that we know this. Go with straight pipes, keep your stock cats for inspection time.

Plus the car sounds soooo much better without cats.

nyny69 · 11-21-2011, 02:39 PM

Quote:

Originally Posted by farthestnorth

So if my goals next week are 520 to 540 at the wheels i should not worry about my cats or high flow cats?

I have just north of 500 rwhp and my HF cats were melted.

TinyToasta · 11-21-2011, 02:47 PM

I guess here in Germany we're screwed with that sort of issue...
Gutting the cats is tax fraud over here

If all of that is true I'm soooo looking for some of the aftermarket guys out there to step up with a solution!

Better check mine soon...

JANNETTYRACING · 11-21-2011, 02:52 PM

Quote:

Originally Posted by farthestnorth

So if my goals next week are 520 to 540 at the wheels i should not worry about my cats or high flow cats?

It is Not about HP it is about cubic Inches per my explanation above.

Exhaust gas temps are the same at 100 hp or 1000 hp when tuned correctly.

CyberPredator · 11-21-2011, 02:55 PM

BTW the picture I posted up was 570whp with high flow cats. Listen to jannety.

Awesome_SS · 11-21-2011, 05:01 PM

A while back my friend(who is a mechanic) thought he heard an exhaust leak after I had my car modded to 445RWHP and after installing SW headers and Cats. We put the car on the rack with it running and did a thorough check of the joints. We found no leaks, but we did notice that one of the Cats had turned a cherry red color. The other Cat just looked normal. We could not find the temperature device. So, we checked it the next day and both Cats stayed the same color. Found the device and the temperature reading on day 2 read between 530 -550F. We pulled the Cats off and there was no melting or damage. Really strange.

GMRULZ · 11-21-2011, 09:16 PM

OK, I was wondering about this glad someone brought it up. I know several mustang guys who have had their high flow cats go out on blown cars. So it can happen to us as well I see.

Next project gut the cats.. So Ted or anybody that has done this, have you seen a small boost drop going from high flow cats to gutted cats in the mid to high rpm range? If so how much at peak?

572HP · 11-22-2011, 05:57 AM

I would really love to find cats that can handle FI. Sure, we can gut them and look legal, or go with straight pipe and swap in cats for inspection. But I hate the smell of these cars without cats. It is also not very environment-friendly. I think that I'll call American Racing to see what they say.

11-21-2011, 12:40 PM	#47
RED DEMON SS OFF THE CHAIN Drives: PSHHH UWISH Join Date: Sep 2011 Location: This Side Of Hell Posts: 8,406 View My Garage	So if my goals next week are 520 to 540 at the wheels i should not worry about my cats or high flow cats? __________________

11-21-2011, 02:47 PM	#51
TinyToasta Drives: way too fast.... Join Date: May 2010 Location: Germany Posts: 297 View My Garage	I guess here in Germany we're screwed with that sort of issue... Gutting the cats is tax fraud over here If all of that is true I'm soooo looking for some of the aftermarket guys out there to step up with a solution! Better check mine soon... __________________ custom build forged LSA, 379ci, TVS2300@15psi, 696rwhp/688ft-lbs, built by DH Individual, Customkingz, tuned by Jannetty Racing JRE rough idle cam, JRE ported lower intake manifold, OD cog drive, 6% OD crank pulley, ported ls3 heads, NW102mm TB, 1/2'' RDS spacer, IW 8-rib drive Pfadt Cradle Bushings, Arms & Rods, Pedders Supercar w/FE4 conversion, ZL1 sways, HE Twin Carbon Street Slayer, ZL1 Rear End (3.73) CTS-V Brake upgrade, Street: 22'' Vossen CV1, Strip: 18'' Forgestar F14 on MT Street Radials

11-21-2011, 02:55 PM	#53
CyberPredator 50 Shades of Prey Drives: TT/SS Join Date: Oct 2010 Location: Between 10 and 20 PSI Posts: 777	BTW the picture I posted up was 570whp with high flow cats. Listen to jannety. __________________ Futral Motorsports built and tuned

11-21-2011, 05:01 PM	#54
Awesome_SS Jeff Drives: 2010 Camaro SS/RS Join Date: Feb 2010 Location: Williamsburg, Va Posts: 659	A while back my friend(who is a mechanic) thought he heard an exhaust leak after I had my car modded to 445RWHP and after installing SW headers and Cats. We put the car on the rack with it running and did a thorough check of the joints. We found no leaks, but we did notice that one of the Cats had turned a cherry red color. The other Cat just looked normal. We could not find the temperature device. So, we checked it the next day and both Cats stayed the same color. Found the device and the temperature reading on day 2 read between 530 -550F. We pulled the Cats off and there was no melting or damage. Really strange. __________________

11-21-2011, 09:16 PM	#55
GMRULZ Drives: 2010 SS & 2008 C6 Join Date: Mar 2008 Location: VA Posts: 1,819	OK, I was wondering about this glad someone brought it up. I know several mustang guys who have had their high flow cats go out on blown cars. So it can happen to us as well I see. Next project gut the cats.. So Ted or anybody that has done this, have you seen a small boost drop going from high flow cats to gutted cats in the mid to high rpm range? If so how much at peak? __________________ 2010 SS L99, 536rwhp 10.843@126.72. Whipple Supercharger stock pulley, ARH 1 7/8 longtubes w/ catted xpipe, magnaflow 3" mufflers, ADM Race CAI, 3:70 gears, lightweight wheels and nitto drag radials. Stock internal L99, stock converter. Bolt on best before blower 12.22@113.29 w/ nothing but ARH headers, catted x-pipe, ADM CAI and a tune on stock Pzero`s! Other car 2008 C6 Ls3, z51, A6, Npp Exhaust, best bonestock pass 11.80@118.82, Number 2 on the Corvette Forums Bonestock fastest list..

11-21-2011, 11:44 AM	#43
IROCanSS Account Suspended Drives: 89 IROC 350 Join Date: Mar 2009 Location: Back roads, southern Ohio Posts: 12,504 View My Garage	I don't think cats are too hard to "gut".

11-21-2011, 11:46 AM	#44
TCAT Drives: Has Wheels Join Date: May 2011 Location: On Earth Posts: 5,553	Didn't a manufacturer make cats that looked stock, but were completely gutted (maybe they were just high flows)? Was that ADM?? I can't find the link to purchase them though.

11-22-2011, 05:57 AM	#56
572HP ACE5 (Atlanta Group) Drives: "Black Ice" Join Date: Sep 2010 Location: Suwanee, GA Posts: 1,702	I would really love to find cats that can handle FI. Sure, we can gut them and look legal, or go with straight pipe and swap in cats for inspection. But I hate the smell of these cars without cats. It is also not very environment-friendly. I think that I'll call American Racing to see what they say. __________________ Custom Two-Tone Paint, Whipple, Pedders, NightOwl RGB Halos & Other Lighting [COTW 5/2/11] 2011 Two-Tone White/Black SS/RS Convertible See our Atlanta Social Group or home page: ACE5.org

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
SLP Headers / High Flow Cats (CHECK ENG LIGHT ON) HELP	LENN2010Z28	Tuning / Diagnostics -- engine and transmission	10	01-23-2012 05:55 PM
Question about JBA High Flow Cats fitment with Flowmaster American Thunder Catback	TCAT	Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons	5	11-06-2011 02:04 PM
Those with LT's, RESET your check engine light!	TAG UR IT	Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons	107	08-18-2010 01:51 AM
Thew check engine light... need help!!	Spiffyguitar	Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons	7	08-10-2010 02:26 AM
Dynojet results for intake, headers, exhaust with SOLO hiflow cats!	topgun1	Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons	17	07-02-2010 06:52 AM