Header and cats question - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

CamaroDIYking · 05-20-2013, 12:52 AM

I'm looking to buy a set of headers and possibly cats. Where I live, I am not required to pass emissions or noise tests. What would you guys recommend? What size headers? Should I even buy cats? What would hi-flow cats do for me anyways?

I have a catback Dynomax exhaust. I installed them with out the mufflers though. Any recommendations?

Avenging Orange · 05-20-2013, 01:25 AM

I keep wondering why people spend money on a cat back and then eliminate the mufflers?

! 7/8" long tubes are the norm. As for hi flo cats..........depends on how raspy you want your exhaust. The cats will mellow the rasp. There are plenty of good quality headers out there, just read some threads and visit our vendors.

CamaroDIYking · 05-20-2013, 01:31 AM

Well I bought the car with the catback on it but took the mufflers off cause I wanted it a little deeper and louder. So if I don't want it to be raspy, I should add hi-flow cats? Or just regular cats?

amizz10 · 05-20-2013, 01:33 AM

i have american racing 7/8 headers with highflow cats and full 3 inch exhaust. no mufflers or resonators.

this is at WOT

CamaroDIYking · 05-20-2013, 01:35 AM

That supposed to be a video?

BAWLZ SS · 05-20-2013, 01:45 AM

If ur looking for a set of headers and cats i would recommend Kooks or American Racing Headers (ARH). I personaly just installed a set of Kooks long tube headers along with their highflowcats and i love the fit, finish and quality of them. If ur planning to keep ur car stock and just add some headers and exhaust the 1 3/4 headers will work. If ur planning to do more mods in the future then 1 7/8 is the way to go (thats what i have) and if ur planning to go with high horsepower #s like a big supercharger than 2 inch will be best. U can't go wrong with a 1 7/8 inch set of headers. That is what i recommend. If u get a set of headers i recommend u get them coated also so u hood keep the under the hood temps a bit lower as they help to do that plus it also gives ur car that extra eye candy under the hood. PM me if u want me to tell u where u can get a set of headers with cats for an unbelievable price!!!!

u can get a set of Kooks headers coated but i think ARH doesnt coat theirs. U can always get them coated tho! I would recommend cats unless ur car is supecharged then i would say no. The Kooks high flow cats are really high flow and.u can even see light through them. They help ur car not smell like an old muscle car. The cats flow very well that u probabpy wont gain much hp if u dont run them. And just warning u, once u do headers ur car will be LOUD !! It will sound bad azz! And in order to get the full benefit.of them.u will have to tune ur car. I love mine.!! Pm me and i can hook u up.with a set for a great price. Do it once and do it right!!!

SPCBA · 05-20-2013, 01:45 AM

if you have no smog or sound restrictions and no wife to bitch about the smell of fuel dont bother paying extra for cats...just get the connections or offroad pipes.

headers and no mufflers is gonna be loud. might look at putting your mufflers back on. goodluck hope i helped a bit.

amizz10 · 05-20-2013, 01:49 AM

Quote:

Originally Posted by CamaroDIYking

That supposed to be a video?

yeah click on it

t&t moyer · 05-20-2013, 07:56 AM

I went with JBA & JBA HF cats. Easy install and sounds great with my NPP cat-back. If I hadn't bought JBA I'd have bought Kooks.

Avenging Orange · 05-20-2013, 05:01 PM

Quote:

Originally Posted by CamaroDIYking

Well I bought the car with the catback on it but took the mufflers off cause I wanted it a little deeper and louder. So if I don't want it to be raspy, I should add hi-flow cats? Or just regular cats?

With headers, always high flow cats....not stock cats. Im only speaking from my experience. '04 GTO: full stainless works 3" w/turbo mufflers and hi flow cats. 1 3/4" long tubes. Sounded nice and stock at idle. Nice low tone when opened up. '06 GTO stainless works 1 3/4" long tubes and stock cat back, no hi flow cats. Had a good sound at idle and low rpm. But when you got into it, it was raspy.
I find the cats mellow the tone in the higher rpm. An x-pipe will also mellow it some.

Mchlgrrsn · 05-20-2013, 05:06 PM

1 7/8 headers. Cat delete. Put your mufflers back on. Kooks.

timtim13 · 05-20-2013, 08:49 PM

My vote, kooks 1 7/8th headers, kooks high flow cats.

Go to www.marylandspeed.com... awesome online shop!

Unless your in the ATL area. Call MTI racing man. They will hook you up!

thahemp · 05-20-2013, 09:21 PM

Quote:

Originally Posted by Mchlgrrsn

1 7/8 headers. Cat delete. Put your mufflers back on. Kooks.

Do this. With the mufflers... you'll question whether or not it's too loud. Then you'll ultimately decide your car sounds bad f*cking a$$, and be very happy with your decision-making ability. My muffler deleted catback is still up on the shelf at the shop where it belongs...

DEANGE2001 · 05-20-2013, 09:39 PM

kooks = muy bueno

i heart my headers....

05-20-2013, 12:52 AM	#1
CamaroDIYking Drives: 2010 Camaro 2SS/RS Join Date: Feb 2013 Location: Georgia Posts: 229	Header and cats question I'm looking to buy a set of headers and possibly cats. Where I live, I am not required to pass emissions or noise tests. What would you guys recommend? What size headers? Should I even buy cats? What would hi-flow cats do for me anyways? I have a catback Dynomax exhaust. I installed them with out the mufflers though. Any recommendations? __________________ 2010 2SS/RS- every option possible in 2010 Lighting- LED footwell, grille, trunk, and engine lights done via DIY. LED dome, DRL, and tag lights. Paint- Painted engine cover, steering wheel bezel, speedometer bezel, front bowtie, tail light bezels, wheel center caps. Exterior lights- tinted tail lights and sidemarker lights. Wheels- powdercoated stock RS 20' wheels black Exhaust- Cat-back Dynomax Bullet Exhaust system with bullet muffler delete. Misc- rear blackout kit from Big Worm Graphix, black side Camaro lettering from Emblem Pros, and rear Camaro lettering from Emblem Pros.

05-20-2013, 01:25 AM	#2
Avenging Orange Drives: 2010 Inferno Orange 2SS/RS Join Date: Apr 2010 Location: Clermont, IN Posts: 3,297	I keep wondering why people spend money on a cat back and then eliminate the mufflers? ! 7/8" long tubes are the norm. As for hi flo cats..........depends on how raspy you want your exhaust. The cats will mellow the rasp. There are plenty of good quality headers out there, just read some threads and visit our vendors. __________________ 2010 Inferno Orange 2SS/RS M6 Black Leather, Sun Roof, OBX Headers, Borla touring axle back, Cold Air Inductions CAI , non synthetic fluids, BMR total bushing upgrade/1" lowering springs, DSE 32mm rear sway bar. GM fe4 shocks/struts/LCA's, AAM 3.91 diff, Vertini RFS1.8 20x9 +30. Conti ExtremeContact Sport 275/35/20. sjm autoprod ABL dash kit. Mike Norris tuned 413/419. Avenging Orange: 43 years of not buying into the Hype........and damn proud of it!! https://youtu.be/9JD9it6SmB8 https://youtu.be/xmelTlEzI34 KICKING CANCERS ASS SINCE 2015!!

05-20-2013, 01:31 AM	#3
CamaroDIYking Drives: 2010 Camaro 2SS/RS Join Date: Feb 2013 Location: Georgia Posts: 229	Well I bought the car with the catback on it but took the mufflers off cause I wanted it a little deeper and louder. So if I don't want it to be raspy, I should add hi-flow cats? Or just regular cats? __________________ 2010 2SS/RS- every option possible in 2010 Lighting- LED footwell, grille, trunk, and engine lights done via DIY. LED dome, DRL, and tag lights. Paint- Painted engine cover, steering wheel bezel, speedometer bezel, front bowtie, tail light bezels, wheel center caps. Exterior lights- tinted tail lights and sidemarker lights. Wheels- powdercoated stock RS 20' wheels black Exhaust- Cat-back Dynomax Bullet Exhaust system with bullet muffler delete. Misc- rear blackout kit from Big Worm Graphix, black side Camaro lettering from Emblem Pros, and rear Camaro lettering from Emblem Pros.

05-20-2013, 01:33 AM	#4
amizz10 Drives: Weapon X Join Date: Aug 2011 Location: west hempstead, N.Y Posts: 208 View My Garage	i have american racing 7/8 headers with highflow cats and full 3 inch exhaust. no mufflers or resonators. this is at WOT __________________ 2011 camaro RS/SS M6 (weaponX) CAI Cold Air Intake, american racing LT headers, x-pipe, high flow cats and full 3inch exhaust, Cam, VDP Tune.

05-20-2013, 01:35 AM	#5
CamaroDIYking Drives: 2010 Camaro 2SS/RS Join Date: Feb 2013 Location: Georgia Posts: 229	That supposed to be a video? __________________ 2010 2SS/RS- every option possible in 2010 Lighting- LED footwell, grille, trunk, and engine lights done via DIY. LED dome, DRL, and tag lights. Paint- Painted engine cover, steering wheel bezel, speedometer bezel, front bowtie, tail light bezels, wheel center caps. Exterior lights- tinted tail lights and sidemarker lights. Wheels- powdercoated stock RS 20' wheels black Exhaust- Cat-back Dynomax Bullet Exhaust system with bullet muffler delete. Misc- rear blackout kit from Big Worm Graphix, black side Camaro lettering from Emblem Pros, and rear Camaro lettering from Emblem Pros.

05-20-2013, 01:45 AM	#6
BAWLZ SS Drives: '10 Camaro LS3 2SS/RS, 1968 Nova Join Date: Aug 2010 Location: California Posts: 972	If ur looking for a set of headers and cats i would recommend Kooks or American Racing Headers (ARH). I personaly just installed a set of Kooks long tube headers along with their highflowcats and i love the fit, finish and quality of them. If ur planning to keep ur car stock and just add some headers and exhaust the 1 3/4 headers will work. If ur planning to do more mods in the future then 1 7/8 is the way to go (thats what i have) and if ur planning to go with high horsepower #s like a big supercharger than 2 inch will be best. U can't go wrong with a 1 7/8 inch set of headers. That is what i recommend. If u get a set of headers i recommend u get them coated also so u hood keep the under the hood temps a bit lower as they help to do that plus it also gives ur car that extra eye candy under the hood. PM me if u want me to tell u where u can get a set of headers with cats for an unbelievable price!!!! u can get a set of Kooks headers coated but i think ARH doesnt coat theirs. U can always get them coated tho! I would recommend cats unless ur car is supecharged then i would say no. The Kooks high flow cats are really high flow and.u can even see light through them. They help ur car not smell like an old muscle car. The cats flow very well that u probabpy wont gain much hp if u dont run them. And just warning u, once u do headers ur car will be LOUD !! It will sound bad azz! And in order to get the full benefit.of them.u will have to tune ur car. I love mine.!! Pm me and i can hook u up.with a set for a great price. Do it once and do it right!!! __________________ Performance- Kooks Headers w/HF cats, ZL1 Corsa exhaust, VMax, CAI Inc. CAI, MGW shifter, RX CC Suspension - KW V3 Coilovers/ Full PFADT & BMR suspension Appearance - ZL1 Fascia/Sides/ Diffuser, AAC Afterburners, RK Sport 3pc Spoiler, SLP Black out Kit

05-20-2013, 01:45 AM	#7
SPCBA Drives: pleather and Chiclets Join Date: Mar 2012 Location: a line somwhere Posts: 4,206 View My Garage	if you have no smog or sound restrictions and no wife to bitch about the smell of fuel dont bother paying extra for cats...just get the connections or offroad pipes. headers and no mufflers is gonna be loud. might look at putting your mufflers back on. goodluck hope i helped a bit. __________________ the power by www.cunningham-motorsports.com the brakes by www.RacingBrake.com

05-20-2013, 07:56 AM	#9
t&t moyer It's all hers. Drives: 2015 ZL1 Join Date: Jan 2012 Location: Djibouti - Horn of Africa / Wellsville NY Posts: 719	I went with JBA & JBA HF cats. Easy install and sounds great with my NPP cat-back. If I hadn't bought JBA I'd have bought Kooks. __________________ #846

05-20-2013, 05:06 PM	#11
Mchlgrrsn Stroked and blown Drives: 2010 LS3 2SS Join Date: Dec 2012 Location: Bridgewater, NJ Posts: 1,458 View My Garage	1 7/8 headers. Cat delete. Put your mufflers back on. Kooks. __________________ LME 416 LS3 shortblock/Callies Compstar 4340 4"crank/Callies 6.125 H beams rods/Wiesco 4.07 forged pistons/Cam Motion custom LS1/LME ported heads /maggie TVS2300/I West 8rib 10%OD /3.2 pulley/OD cog drive/JRE tensioner/ID850 /ADM dual fuel/Kooks LT 1 7/8/magna flow2.5 /cat delete/Roto Fab CAI /MGW short throw /SPEC super twin clutch/G Force built trans,carbon syncro rear shaft upgrade /DSS 9"single CF DS /Strange 3.70/31 spline trutrac/MT DR's/earls oil cooler /tuned KHC

05-20-2013, 08:49 PM	#12
timtim13 ACE5 (Atlanta Group) Drives: 2011 Camaro SS- Summit White Join Date: May 2013 Location: Duluth GA Posts: 75	My vote, kooks 1 7/8th headers, kooks high flow cats. Go to www.marylandspeed.com... awesome online shop! Unless your in the ATL area. Call MTI racing man. They will hook you up! __________________ '11 SS- Summit White

05-20-2013, 09:39 PM	#14
DEANGE2001 Drives: 2010 2ss LSR CAI, Borla S axle back Join Date: Apr 2011 Location: Rochester, NY Posts: 208 View My Garage	kooks = muy bueno i heart my headers.... __________________ 2010 2SS (Red w/ White Stripes) LSR CAI, Kooks 1 7/8 LTs with Cats, Borla S-type Axle-back Exhaust and Tune "cmon, the engine has all forged internals...its just begging to be blown"