Who's running headers with cats - Page 2

Jbanta1983 · 05-29-2020, 05:43 PM

I hate the sound of headers with no cats on npp, but I have borla s type cat back now and I don't know how the catless would sound with them.

DannyC · 06-01-2020, 08:25 PM

Do the long tube headers with high flow cats. I have Flow tech axle back glass packs. Sounds great and not tooo loud. LOL You will need to tune the car to turn off the down stream O2 sensors.
The increase in power is worth it.

L78toLT1 · 06-02-2020, 08:41 AM

Quote:

Originally Posted by Joshinator99

Yep. Unless you buy cats specifically marketed for forced induction, you’ll end up with generic “high flow” ones, and they will not stand up long term. Cats that can handle boost cannot be made cheaply due to the precious metals involved in making them.

My Kooks high flow cats are holding up great so far at around 750whp. They have around 10k miles including numerous track days. I dropped my exhaust last weekend when I installed the FE4 handling kit and ZLE cradle bushings and the cats still looked like new. Based on Greg and other's experiences, I must be right at the limit boost/hp wise.

Joshinator99 · 06-02-2020, 10:25 AM

Quote:

Originally Posted by L78toLT1

My Kooks high flow cats are holding up great so far at around 750whp. They have around 10k miles including numerous track days. I dropped my exhaust last weekend when I installed the FE4 handling kit and ZLE cradle bushings and the cats still looked like new. Based on Greg and other's experiences, I must be right at the limit boost/hp wise.

Yeah, I'd say you're pretty close to the limit on those.

L78toLT1 · 06-03-2020, 06:45 AM

Quote:

Originally Posted by Joshinator99

Yeah, I'd say you're pretty close to the limit on those.

Yeah, not sure what I'll do when/If they fail. I really like the way the car sounds with the headers and cats into the stock exhaust. I don't have to worry about emissions inspection in my county, so going catless wouldn't be a problem. I'm just not sure on the sound.

Flowtie1 · 06-04-2020, 04:46 AM

ARH told me the hi flow is good to 800rwh. Over that they burn up. I am going arh headers and long system with cats into the suitcase.

Redlinez · 06-04-2020, 05:23 AM

Oh, and don't forget smelling like raw fuel with no cats.

06-01-2020, 08:25 PM	#16
DannyC Drives: 17 Camaro SS Join Date: Nov 2019 Location: Central VA Posts: 117	Do the long tube headers with high flow cats. I have Flow tech axle back glass packs. Sounds great and not tooo loud. LOL You will need to tune the car to turn off the down stream O2 sensors. The increase in power is worth it. __________________ Flow Tech axle back, Roto-Fab, Nick Williams 103, AEM Wide Band, Defrost vent pod, billet catch can, BBK long tube headers and NGK LTR6GP, #90198, one step colder, Magnuson 2650, Snow Performance water/methanol injection. (Also tune myself w/HPTuners)

06-04-2020, 05:23 AM	#21
Redlinez Shifts under load Drives: 2020 Camaro 1SS 1LE rally green Join Date: Apr 2017 Location: Fuquay-Varina, NC Posts: 1,295	Oh, and don't forget smelling like raw fuel with no cats. __________________ 24 Audi S3 prem plus, sport package HPDE - southeast - JTI- solo, PCA- blue. 22 Suzuki GSX-S 1000GT blue

05-29-2020, 05:43 PM	#15
Jbanta1983 Drives: 2019 2ss 1LE Join Date: Mar 2019 Location: Kennett square, PA Posts: 307	I hate the sound of headers with no cats on npp, but I have borla s type cat back now and I don't know how the catless would sound with them.

06-04-2020, 04:46 AM	#20
Flowtie1 Drives: 2017 ZL1 Join Date: Apr 2020 Location: South florida Posts: 332	ARH told me the hi flow is good to 800rwh. Over that they burn up. I am going arh headers and long system with cats into the suitcase.

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