high flow cats - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

richey307 · 01-22-2010, 05:50 PM

im looking to buy the kook long tube headers. do i realy need the kooks cats. whats the diffence with stock cats? is there a noise difference

eynigush · 01-22-2010, 05:58 PM

I was on the same boat. You might want to talk to Brandon at MarylandSpeed, he's a wealth of knowledge when it comes to Kooks headers. I went with the high flow cats. If you go with long tubes so will have to go with either straight pipes or high flow cats; won't directly bolt on to stock cats, they would have to be relocated and that would take cutting and welding.

--Eddie

SSTony · 01-22-2010, 06:05 PM

you have to buy the cats unless you plan on bypassing them and i dont suggest that. When it comes to the headers installation its really easy. the headers connect right to the kooks cats and the kooks cats connect right to the stock exhaust. even the O2 sensors connect perfect. its well worth it. trust me here.

richey307 · 01-22-2010, 09:30 PM

alright, it sounds like i should get the cats. now what do think about the size? 1 7/8",1 3/4" or 2"

gomer · 01-22-2010, 09:48 PM

Quote:

Originally Posted by richey307

alright, it sounds like i should get the cats. now what do think about the size? 1 7/8",1 3/4" or 2"

I did the Kook's 1 7/8" headers with high flow cats. Do a seach under my name and you can see the before and after results, I gained 24rwhp and 18rwtq from the header swap. I'm going to take the cats off in a week or so and dyno again with the offroad setup.

BLACK10 · 01-23-2010, 01:25 AM

1 7/8" with cats

VADER SS L99 · 01-23-2010, 02:02 AM

Quote:

Originally Posted by richey307

alright, it sounds like i should get the cats. now what do think about the size? 1 7/8",1 3/4" or 2"

Jennety Racing is doing a test to let us know which is best on a stock car so stay tuned

66DeuceLS1 · 01-23-2010, 01:57 PM

Quote:

Originally Posted by VADER SS L99

Jennety Racing is doing a test to let us know which is best on a stock car so stay tuned

Dollar to a donut on a stock car the HP results will be nearly identical....or see a slight drop in both HP & TQ with increased tube size.

toehead93 · 01-23-2010, 03:10 PM

Actually most say the larger tube size will increase hp more and increase tourque less. This was typical on smaller, less hp stock LS1s. From what I've seen the smaller primaries have no advantage over the oarger on LS3s but I'll leave that discussion for the Janetty test. If you plan on staying stock it won't matter but if you want to add a cam or something more the 1-7/8 will be ideal.

01-22-2010, 05:50 PM	#1
richey307 Drives: 2010 camaro ss rs Join Date: Jan 2010 Location: palm harbor, florida Posts: 25	high flow cats im looking to buy the kook long tube headers. do i realy need the kooks cats. whats the diffence with stock cats? is there a noise difference

01-22-2010, 05:58 PM	#2
eynigush SoCal C5 Family Member Drives: 2010 Camaro SSRS Rally Yellow Join Date: Oct 2009 Location: San Diego, CA Posts: 412 View My Garage	I was on the same boat. You might want to talk to Brandon at MarylandSpeed, he's a wealth of knowledge when it comes to Kooks headers. I went with the high flow cats. If you go with long tubes so will have to go with either straight pipes or high flow cats; won't directly bolt on to stock cats, they would have to be relocated and that would take cutting and welding. --Eddie __________________ Kooks 1 7/8 headers w/high flow cats Magnaflow Cat-back Competition Series Cold Air Intake by CAI Inc.

01-22-2010, 06:05 PM	#3
SSTony Drives: SS Camaro Join Date: Jul 2009 Location: Piscataway NJ Posts: 1,782 View My Garage	you have to buy the cats unless you plan on bypassing them and i dont suggest that. When it comes to the headers installation its really easy. the headers connect right to the kooks cats and the kooks cats connect right to the stock exhaust. even the O2 sensors connect perfect. its well worth it. trust me here. __________________

01-23-2010, 01:25 AM	#6
BLACK10 Drives: 2010 CAMARO. 10.04@133mph, 1.4 60' Join Date: Jul 2009 Location: Lafayette, Louisiana Posts: 4,585	1 7/8" with cats Attached Images

01-23-2010, 03:10 PM	#9
toehead93 Drives: 2014 2SS/1LE Join Date: Feb 2007 Location: wpb fl Posts: 3,135 View My Garage	Actually most say the larger tube size will increase hp more and increase tourque less. This was typical on smaller, less hp stock LS1s. From what I've seen the smaller primaries have no advantage over the oarger on LS3s but I'll leave that discussion for the Janetty test. If you plan on staying stock it won't matter but if you want to add a cam or something more the 1-7/8 will be ideal. __________________ Used Racing Brake 2 Peice Rotors for sale: http://www.camaro5.com/forums/showthread.php?t=344754 Summit White 2014 2SS 1LE Recaros, NPP exhaust, Nav 2010 2SS A6 - sold.

01-22-2010, 09:30 PM	#4
richey307 Drives: 2010 camaro ss rs Join Date: Jan 2010 Location: palm harbor, florida Posts: 25	alright, it sounds like i should get the cats. now what do think about the size? 1 7/8",1 3/4" or 2"

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