Check your cats... - Page 7 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Big Daddy Kane · 11-23-2011, 04:38 PM

Quote:

Originally Posted by JANNETTYRACING

We have seen several sets of Kooks Cats Fail with superchargers.

Awesome! I'll be taking mine off!!

JamesNoBrakes · 11-23-2011, 08:15 PM

Seems like turbos make a LOT more sense, give a huge drop in exhaust temperature after passing through the turbine (and less stress on the crankshaft/engine). I know turbos can still get hot in the area of the cats, but it would seem with the turbine you'd at least be converting a lot of that heat energy into something usefull.

Blacknight11 · 11-23-2011, 10:58 PM

This is what I'm confused about. Several large companies that install S/C who share this site use the oem exhaust when installing S/C. It seems that this issue is known so why are they using the oem cats. If I remove my kooks exhaust, headers and hi flow cats and put my oem parts back on how much HP will I loose . Also can instill use the 3.6 pulley

Dukes117 · 11-23-2011, 11:01 PM

Just remove your cats ^. And you'll lose between 30-40hp.

yotaman96 · 11-24-2011, 12:03 AM

For those of you that have full exhaust and removed your cats, how much louder did it get?!

4thGen427CI · 11-24-2011, 12:57 AM

So would it be better to have twin turbos and high flow cats. Or can turbos replace the high flow cats? I've heard of that but never had it proven so to say. But if the turbo can fix the heating problem and run through the cats and be fine for the cats. Just might be the direction I would rather take vs. supercharger.

lionssfan · 11-24-2011, 01:24 PM

Quote:

Originally Posted by HumanWiki

Interesting.... I have a rattle in my left HF cat.. I've not opened the pipes to look at them though..

that's usually the a sign there breaking up by having rattles on OEM cats from my exprience being a mechanic and end up in the mufflers.

lionssfan · 11-24-2011, 02:02 PM

Quote:

Originally Posted by JANNETTYRACING

$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ Check the Price of the cats for the ZR1 or CTSV

exactly big bucks, the insides look different too. oem has small holes on what looks like a gride or you could say honey cone looking. my kooks look like thin metal strips wrapped around the inside.

lionssfan · 11-24-2011, 02:12 PM

Quote:

Originally Posted by JANNETTYRACING

Factory cats are More resilient than aftermarket cats and at 5-6 PSI it is not a problem.

Ted you suggest 3.6 pully with maggy if running long tube headers and cats right? or is that without cats? cats or no cats how does this effect boost. better to have a 3.4 pulley without cats? thanks

Big Daddy Kane · 11-24-2011, 02:21 PM

FUUUUUUUUNNN!! Making sure my cats don't clog up on me.

coptzr · 11-24-2011, 02:42 PM

Same issue here. Running a E-force, cam, SLP headers with cats. When Vector Motorsports was tuning it, we thought we had bad fuel because he could not get any timing in it without spark knock. Those guys are awesome and he set it safe and away I went. After a couple hundred boosted miles, I swore the rods were coming out of the motor, come to find out, it was the cat material rattling around. Removed then and found them TOTALLY destroyed. Gutted them and off we go. Just need to get it back to re-tune for some more HP!!!

InvaderMoose · 11-24-2011, 05:29 PM

Damn. About to put a whipple on my L99. Anyone know about the JBA competition exhaust system? V8 3" Cat-back System w/ 4" Dual Wall tips (3" to 3")

2L82RUN · 11-24-2011, 05:46 PM

Quote:

Originally Posted by yotaman96

For those of you that have full exhaust and removed your cats, how much louder did it get?!

'Loud' is a subjective question. I went from stock to Stainless Works 2" long tubes, cam, no cats, and Borla S type exhaust. It's definitely louder than stock but not obnoxious. However, that is my opinion. Someone else may consider my car too loud. See video....maybe this will help. Near the end of the video I had my wife open the cutouts so don't freak out about that sound!! LOL

IROCanSS · 11-24-2011, 05:55 PM

LEMME HEAR A LIL BIT!!!

Here is 1-7/8" stainless works, no cats and American thunder by Flowmaster. Also opening cutouts. This is stock ls3 cam. I agree with the above poster, sound is subjective. I feel neither his nor my car is very loud until you open the cutouts!

11-23-2011, 10:58 PM	#87
Blacknight11 Drives: 2011 Black 2SS/RS Join Date: Aug 2010 Location: Maryland Posts: 525	Confused This is what I'm confused about. Several large companies that install S/C who share this site use the oem exhaust when installing S/C. It seems that this issue is known so why are they using the oem cats. If I remove my kooks exhaust, headers and hi flow cats and put my oem parts back on how much HP will I loose . Also can instill use the 3.6 pulley

11-24-2011, 12:03 AM	#89
yotaman96 Drives: 2017 Camaro SS1LE 2000 Trans Am WS6 Join Date: Jul 2008 Location: Portland, TN Posts: 2,955 View My Garage	For those of you that have full exhaust and removed your cats, how much louder did it get?! __________________ 2017 Krypton Green SS 1LE Magnacharged 2000 Trans Am WS6 manual trans 2002 Trans Am 2015 Ram Crew Cab Cummins

11-24-2011, 02:21 PM	#94
Big Daddy Kane Drives: Red 1SS Join Date: Oct 2010 Location: Bethel Park, PA Posts: 195	FUUUUUUUUNNN!! Making sure my cats don't clog up on me. Attached Images __________________ Kooks LT Headers/catback exhaust, E-force supercharger, JRE fuel line upgrade, JRE differential, 3.91 LPE gears, Roto-fab intake, JRE tune, DSS Carbon Fiber driveshaft, MGW shifter, Hotchkis chassis braces

11-24-2011, 02:42 PM	#95
coptzr Resistance is futile Drives: Anything thats fast Join Date: May 2009 Location: Big Rapids,MI Posts: 315	Same issue here. Running a E-force, cam, SLP headers with cats. When Vector Motorsports was tuning it, we thought we had bad fuel because he could not get any timing in it without spark knock. Those guys are awesome and he set it safe and away I went. After a couple hundred boosted miles, I swore the rods were coming out of the motor, come to find out, it was the cat material rattling around. Removed then and found them TOTALLY destroyed. Gutted them and off we go. Just need to get it back to re-tune for some more HP!!! __________________ Modifications (so far) Edelbrock E-Force supercharger JRE fuel system upgrade Edelbrock CAI VMS stage 2.5 cam kit SLP LT's, no cats NPP muffler's w/x-pipe Tuned at Vector Motorsports 606 RWHP and 567 RWT Black 1LE 10 spokes. Hotchkis drop springs.

11-24-2011, 05:29 PM	#96
InvaderMoose Drives: 2010 2SS/RS CGM Join Date: Apr 2010 Location: N/A Posts: 958	Damn. About to put a whipple on my L99. Anyone know about the JBA competition exhaust system? V8 3" Cat-back System w/ 4" Dual Wall tips (3" to 3") __________________ Engine/Appearance: 530 RWHP Whipple supercharger, Full JBA Exhaust, Ported TB, Cold Air Inductions & ADM Scoop /Complete new paint, 20" Forgestar F14s, Sinister hood, SLP Spoiler, AAC Halos, P13W Fogs

11-23-2011, 08:15 PM	#86
JamesNoBrakes Drives: 2SS 1LE Join Date: Oct 2011 Location: AK Posts: 2,299	Seems like turbos make a LOT more sense, give a huge drop in exhaust temperature after passing through the turbine (and less stress on the crankshaft/engine). I know turbos can still get hot in the area of the cats, but it would seem with the turbine you'd at least be converting a lot of that heat energy into something usefull.

11-23-2011, 11:01 PM	#88
Dukes117 H0TWH331S Drives: '11 SW SS(SOLD) '12 IOM SS (order) Join Date: Nov 2011 Location: Astoria, NY Posts: 225	Just remove your cats ^. And you'll lose between 30-40hp.

11-24-2011, 12:57 AM	#90
4thGen427CI 5th Gen Drives: 10 SS Join Date: Jul 2010 Location: Denver,Colorado Posts: 426	So would it be better to have twin turbos and high flow cats. Or can turbos replace the high flow cats? I've heard of that but never had it proven so to say. But if the turbo can fix the heating problem and run through the cats and be fine for the cats. Just might be the direction I would rather take vs. supercharger.

11-24-2011, 05:55 PM	#98
IROCanSS Account Suspended Drives: 89 IROC 350 Join Date: Mar 2009 Location: Back roads, southern Ohio Posts: 12,504 View My Garage	LEMME HEAR A LIL BIT!!! Here is 1-7/8" stainless works, no cats and American thunder by Flowmaster. Also opening cutouts. This is stock ls3 cam. I agree with the above poster, sound is subjective. I feel neither his nor my car is very loud until you open the cutouts!

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