Factory CAT-BACK question
Thread Starter
Instructor
Joined: Apr 2008
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From: charlottesville va
Factory CAT-BACK question
I noticed on the Kerbeck website that a factory assessory option was cat back exhausts. Is this something in addition to the dual mode (NPP)exhause option?
Thanks
Thanks
Burning Brakes
Joined: Oct 1999
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From: meraux louisiana
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Le Mans Master
Joined: May 2005
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From: Hope, Arkansas - '07 LMB Coupe
Cruise-In VIII Veteran
There's two type of bolt-on systems. An over-axle (standard) system bolts on the rear of the stock H-pipe near the front of the tranny. A cat-back system is similar, but includes an X-pipe to replace the stock H-pipe and bolts on just behind the cats.
Race Director
Joined: Jan 2005
Posts: 13,656
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From: Bay Shore, NY 11706 MILD2WILD (M2W)
St. Jude Donor '06-'07
From Genes site www.gmpartshouse.com
Genuine GM Performance Parts Exhausts
19172324 – Performance cat-back exhaust system – 1250.00
19172326 – Off road cat-back exhaust system – 1250.00
Shipping is $55.00. Please call for availability and/or to order.
Both exhausts come with welded on, round, angle cut tips (as shown in pic)
The tips cannot can be changed out as in the previous GM exhausts.
These exhausts are for LS2 or LS3 powered Corvettes!
The performance exhaust is normally a less aggressive sounding and the off-road is normally a bit more louder/throaty.
Genuine GM Performance Parts Exhausts
19172324 – Performance cat-back exhaust system – 1250.00
19172326 – Off road cat-back exhaust system – 1250.00
Shipping is $55.00. Please call for availability and/or to order.
Both exhausts come with welded on, round, angle cut tips (as shown in pic)
The tips cannot can be changed out as in the previous GM exhausts.
These exhausts are for LS2 or LS3 powered Corvettes!
The performance exhaust is normally a less aggressive sounding and the off-road is normally a bit more louder/throaty.
Team Owner
Joined: Aug 2002
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Tech Contributor
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St. Jude Donor '05-'06-'07-'10
The Cat-Back Exhaust accessory you saw is not a factory option. It is a performance exhaust package that is marketed by Genuine Corvette Accessories (GCA) and sold through Chevrolet dealers. It is basically an aftermarket exhaust. There are two options that I recall a "off-road" and a "touring". If I remember correctly these are manufactured by Borla and marketed through GCA. These exhaust packages are manufactured to bolt up the the factory exhaust behind the catalytic converter hence the name (cat back) as it replaces the factory exhaust components from the cat, back. They do not come with an x-pipe, nor do they require one. There is an optional x-pipe available through GCA as well.
If you have the NPP exhaust this will replace the NPP and delete the bi-mode valves and the RPM open feature.
If you have the NPP exhaust this will replace the NPP and delete the bi-mode valves and the RPM open feature.
Thread Starter
Instructor
Joined: Apr 2008
Posts: 162
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From: charlottesville va
Does this performance catback
come with the dual mode exhaust. I see a vaccum port on each exhaust outlet. The factory exhaust only has two of the 4 exhaust tubes with vaccum ports, right?
SO i guess the performance catback has a little deeper sound when the valves are closed, than the factory NPP
SO i guess the performance catback has a little deeper sound when the valves are closed, than the factory NPP
Team Owner
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Tech Contributor
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St. Jude Donor '05-'06-'07-'10
No. It does not come with a dual mode. Those are not vacuum ports those are mounting pins. There is no vacuum operation nor butterfly valves on the performance exhaust. It is a conventional exhaust that will work on all LS2/LS3 cars.
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Burning Brakes
Joined: Oct 1999
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From: meraux louisiana
Thank You!
Now I am up to speed on Cat Backs! andy
Thread Starter
Instructor
Joined: Apr 2008
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From: charlottesville va
I understand
now. Its just another after market option the dealer can install for someone. Would you say this exhaust is the least "milder" of all the
other exhaust options available.
Is there a sound video available I could hear?
other exhaust options available.
Is there a sound video available I could hear?
Melting Slicks
Joined: Jun 2007
Posts: 2,241
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From: San Antonio TX
I haven't read/heard of many folks getting this option, especially since there are so many better aftermarket alternatives...not to mention how popular the NPP option has become. But with that said...everytime I see these, I can't help but comment on how cool the C6 flags are on the tips! 