Cat back vs axle back from gmpp. What's the diff? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

KIZE · 03-20-2011, 02:41 PM

What's the difference between cat converter back vs axle back? Does gmpp offer both?

blazzin1 · 03-20-2011, 02:49 PM

I believe GMPP only offers the axle-back. And as the names imply, the axle-back is only that section of exhaust starting at the rear axle out to the exhaust tips. The cat-back starts immediately behind the catalytic converts and goes all the way to the tips. Usually, the cat-back systems will have some sort of X-pipe or H-pipe in the system. Hope this helps.

KIZE · 03-21-2011, 10:11 AM

Helps, thanks. Where, physically, are the cats located? Right out of the manifolds?

mikeSS · 03-21-2011, 10:16 AM

yes if you were to look under the car it would be very clear what the cats look like and are located. if i was you i would go with a cat back. they sound better then just axle backs

KIZE · 03-21-2011, 09:30 PM

Guess the cat backs remove a bit more headloss. Makes sense. Thanks guys.

Dvenom · 03-26-2011, 07:14 PM

I heard catback replaces the whole exhaust, makes your car breath better, and I also heard the stock exhuast weighs around 50 pounds.

mikeSS · 03-26-2011, 08:16 PM

Quote:

Originally Posted by Dvenom

I heard catback replaces the whole exhaust, makes your car breath better, and I also heard the stock exhuast weighs around 50 pounds.

the whole exhaust is headers to mufflers, a cat back is not that.

SixCyl · 08-04-2011, 07:31 PM

This would be further on down the line but I eventually want to buy BBK longtube headers and sometime after that a cat back exhaust system. Would I need to buy the BBK cat backs to have them fit or would any same size exhaust bolt on? Assume I have zero knowledge, because I do.

Thanks.

03-20-2011, 02:41 PM	#1
KIZE www.gkiser.com Drives: 2010 2SS/RS, Auto, Summit White. R Join Date: Apr 2010 Location: Tampa Posts: 431	Cat back vs axle back from gmpp. What's the diff? What's the difference between cat converter back vs axle back? Does gmpp offer both? __________________ Roto-fab CAI, GMPP exhaust with tips, Pistol Grip shifter with paddle switches, 'Chevrolet' aluminum kick plates, Aluminum Bow Ties, ClearBra front bumper/facia + side views + gills + behind door handles. SS floormats. www.gkiser.com KIZE www.gkiser.com

03-21-2011, 10:11 AM	#3
KIZE www.gkiser.com Drives: 2010 2SS/RS, Auto, Summit White. R Join Date: Apr 2010 Location: Tampa Posts: 431	Helps, thanks. Where, physically, are the cats located? Right out of the manifolds? __________________ Roto-fab CAI, GMPP exhaust with tips, Pistol Grip shifter with paddle switches, 'Chevrolet' aluminum kick plates, Aluminum Bow Ties, ClearBra front bumper/facia + side views + gills + behind door handles. SS floormats. www.gkiser.com KIZE www.gkiser.com

03-21-2011, 10:16 AM	#4
mikeSS Drives: 2015 c7 Join Date: Nov 2009 Location: MI Posts: 7,462	yes if you were to look under the car it would be very clear what the cats look like and are located. if i was you i would go with a cat back. they sound better then just axle backs Attached Images

03-21-2011, 09:30 PM	#5
KIZE www.gkiser.com Drives: 2010 2SS/RS, Auto, Summit White. R Join Date: Apr 2010 Location: Tampa Posts: 431	Guess the cat backs remove a bit more headloss. Makes sense. Thanks guys. __________________ Roto-fab CAI, GMPP exhaust with tips, Pistol Grip shifter with paddle switches, 'Chevrolet' aluminum kick plates, Aluminum Bow Ties, ClearBra front bumper/facia + side views + gills + behind door handles. SS floormats. www.gkiser.com KIZE www.gkiser.com

08-04-2011, 07:31 PM	#8
SixCyl Drives: 2010 Camaro CGM V6 Join Date: Mar 2011 Location: Florida Posts: 694 View My Garage	This would be further on down the line but I eventually want to buy BBK longtube headers and sometime after that a cat back exhaust system. Would I need to buy the BBK cat backs to have them fit or would any same size exhaust bolt on? Assume I have zero knowledge, because I do. Thanks. __________________ El gato. Mods: Eagle eye headlights, 18" Axis Sport graphite, Roto-Fab cold air intake, Vmax ported TB, 3/8" Vmax Black-Ice, RX single valve catch can, RX breather, Pedders inserts, Trifecta tune, BBK LTH 304 SS. art/ärt/Noun. Definition: 5th generation Camaro.

03-20-2011, 02:49 PM	#2
blazzin1 Drives: 2010 2SS/RS R6P Join Date: Nov 2008 Location: St. Cloud, FL Posts: 4,845 View My Garage	I believe GMPP only offers the axle-back. And as the names imply, the axle-back is only that section of exhaust starting at the rear axle out to the exhaust tips. The cat-back starts immediately behind the catalytic converts and goes all the way to the tips. Usually, the cat-back systems will have some sort of X-pipe or H-pipe in the system. Hope this helps.

03-26-2011, 07:14 PM	#6
Dvenom Drives: 2010 Camaro 2SS Silver Join Date: Feb 2011 Location: Columbia,MD Posts: 18	I heard catback replaces the whole exhaust, makes your car breath better, and I also heard the stock exhuast weighs around 50 pounds.

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