Headers w/ exhaust cutouts - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

OHIOSS · 01-21-2012, 07:34 PM

Sorry this is probably a stupid question, I'm a rookie when it comes to performance cars. I have a 2SS/RS/M6 and I had electric exhaust cutouts installed 2 years ago. I have been reading about changing the OEM headers with new headers to get some additional HP. My cutouts are installed past the existing headers, but b4 the mufflers. When I have the cutouts oepn isn't that giving me about the same thing as having larger headers because of the reduced restriction? Does it make any sense to replace the headers when you have exhaust cutouts already installed?

Would the cutouts have to be cut out and reinstalled if I purchased after market headers? The same question if I wanted to get a Borla exhaust, would the cutouts have to be cut out and reinstalled or would that section of exhaust piping stay as is and anything new could be installed b4 or after the cutouts?

Russ

mikeSS · 01-21-2012, 07:49 PM

as long as you have them installed past the OEM cats. which i bet you do. then you will be fine getting headers. a lot of people run cut outs with headers. you will gain a lot of power and a lot of sound.

if you get a cat back borla exhaust you would need to reinstall. but if you get headers and borla muffler no need for reinstall.

Rabamaro · 01-21-2012, 09:24 PM

Correct me if im wrong, but I'm not totally sure that you'll gain any power with opening cutouts. If anything, you'd lose some torque. I think they're purely for sound. There really isn't any restriction at the mufflers. An aftermarket axle back might net you 2-4 rwhp. A cat-back only 6-12 hp. Most of the restriction comes at the stock exhaust manifold and cats.

mikeSS · 01-21-2012, 09:34 PM

Quote:

Originally Posted by Rabamaro

Correct me if im wrong, but I'm not totally sure that you'll gain any power with opening cutouts. If anything, you'd lose some torque. I think they're purely for sound. There really isn't any restriction at the mufflers. An aftermarket axle back might net you 2-4 rwhp. A cat-back only 6-12 hp. Most of the restriction comes at the stock exhaust manifold and cats.

he will gain a lot of power if he adds headers regardless of cut outs or not.

Rabamaro · 01-22-2012, 01:13 AM

Quote:

Originally Posted by mikeSS

he will gain a lot of power if he adds headers regardless of cut outs or not.

Oh I agree. I was only referring to whether or not he'd get power from opening the cutouts.

01-21-2012, 07:34 PM	#1
OHIOSS Russ Drives: Yukon Denali, Charger, CamaroSS Join Date: Jun 2009 Location: Ohio Posts: 2,811	Headers w/ exhaust cutouts Sorry this is probably a stupid question, I'm a rookie when it comes to performance cars. I have a 2SS/RS/M6 and I had electric exhaust cutouts installed 2 years ago. I have been reading about changing the OEM headers with new headers to get some additional HP. My cutouts are installed past the existing headers, but b4 the mufflers. When I have the cutouts oepn isn't that giving me about the same thing as having larger headers because of the reduced restriction? Does it make any sense to replace the headers when you have exhaust cutouts already installed? Would the cutouts have to be cut out and reinstalled if I purchased after market headers? The same question if I wanted to get a Borla exhaust, would the cutouts have to be cut out and reinstalled or would that section of exhaust piping stay as is and anything new could be installed b4 or after the cutouts? Russ

01-21-2012, 09:24 PM	#3
Rabamaro Drives: 2010 ABM SS/RS Join Date: Nov 2010 Location: Prairieville, LA Posts: 491 View My Garage	Correct me if im wrong, but I'm not totally sure that you'll gain any power with opening cutouts. If anything, you'd lose some torque. I think they're purely for sound. There really isn't any restriction at the mufflers. An aftermarket axle back might net you 2-4 rwhp. A cat-back only 6-12 hp. Most of the restriction comes at the stock exhaust manifold and cats. __________________ Vararam Tune CAI, Vararam Power Wedge, 160 degree stat, VMax ported throttle body, Ceramic coated ARH 1 7/8" LTs with X-pipe, Borla S-Type Axle back, MGW short throw, 3.91s, Ported stock IM, BTR Stage IV cam, Heritage Grille, Backup camera, UMI Performance trailing arms and toe rods, dyno tune

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Long tube headers / exhaust kits Camaro SS	drummer5679	Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons	19	09-03-2015 12:15 PM
2010 Camaro 6.2L headers w/integrated merge spike and Exhaust systems	Xplosive Performance	V8 Bolt-Ons & Tunes	0	01-19-2011 02:54 PM

01-21-2012, 07:49 PM	#2
mikeSS Drives: 2015 c7 Join Date: Nov 2009 Location: MI Posts: 7,462	as long as you have them installed past the OEM cats. which i bet you do. then you will be fine getting headers. a lot of people run cut outs with headers. you will gain a lot of power and a lot of sound. if you get a cat back borla exhaust you would need to reinstall. but if you get headers and borla muffler no need for reinstall.