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2010 Cadillac CTS-V
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268 Posts
Discussion Starter #1
Anyone running this combo? Looking for info on throwing CEL, Drone and sound quality. Had this on my 05 and it sounded great. Also, don't want to void warranty so wondering if you have to tune if installed. Also, any info on the stealth tune would be great. I have looked and looked but don't find what I am looking for.

Thanks, Jeff
 

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09 CTS-V
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249 Posts
Yes you need a tune. Kooks and corsa sport would be the loudest thing you have ever herd.

I have Kooks with cats and Corsa touring its so loud!
 

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2010 Cadillac CTS-V
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268 Posts
Discussion Starter #3
Well that answered that question. LOL. I don't want to make this thing a beast like my 05 (B&B Headers and Catback) Things have changed, corsa was the milder one on those cars. Just when I got the corsa installed on my '10, I looked at the factory exhaust and it made my stomach hurt & I can't locate a system to change the catback to the corsa axle back. Actually, as much as the corsa cost it should have been a catback... Factory exhaust had crimps and bends and more crimps, and I didn't even see why they were smashing the pipes like that! Seemed to have plenty of room for mendral bends.
 

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Performance Enthusiast
2009 CTS, 2009 CTS-V, 2012 CLS550
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479 Posts
Anyone running this combo? Looking for info on throwing CEL, Drone and sound quality. Had this on my 05 and it sounded great. Also, don't want to void warranty so wondering if you have to tune if installed. Also, any info on the stealth tune would be great. I have looked and looked but don't find what I am looking for.

Thanks, Jeff
Yep, you will most definitely need a tune and it will have a higher pitch and be louder than most. I added racing baffles and it did help a little... The Corsa exhaust without the headers will make the car quieter than OEM during normal driving. But will wake up at WOT.
 

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2011 Thunder Gray CTS-V Coupe
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527 Posts
Not sure whether you're referring to the Corsa sport or touring, because with my sport the car sounds louder than OEM during normal driving, and better too.

Yep, you will most definitely need a tune and it will have a higher pitch and be louder than most. I added racing baffles and it did help a little... The Corsa exhaust without the headers will make the car quieter than OEM during normal driving. But will wake up at WOT.
 

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2010 Cadillac CTS-V
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268 Posts
Discussion Starter #7
I have the Sport verison of the axle back. Just the middle section looks so restrictive, anyone make a cat back to corsa in stainless?
 

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Performance Enthusiast
2009 CTS, 2009 CTS-V, 2012 CLS550
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479 Posts
Not sure whether you're referring to the Corsa sport or touring, because with my sport the car sounds louder than OEM during normal driving, and better too.
It was the Touring version. The Sport version was not available until much later and resulted from the negative input comments on the tone of the Touring.
 

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No Caddy, 2009 6.2 Silverado 4x4, 2003 Z06
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14 Posts
Why is the tune needed? Is it just for the CEL? For those of us that want to preserve our warranties, we should be able to live with just headers + stock/catback exhaust and leave the ECU as is.

I've done this on my 2009 Silverado and my 2003 Z06. Both used Dynatech long tube headers with a GHL catback on the vette and Corsa Touring on the Silverado. They were both throwing CEL's but I simply cleared them on the Vette with the built in diagnostic mode and flat out ignored it on my truck most of the time. I realize that running with no tune will not maximize gains, but if someone is looking for a slight improvement in breathing and power, the headers themselves will not cause any issues with the warranty. In the case of the truck, it does cause issues with the remote start as the truck will not start if it has a CEL but this only caused a problem in the winter. I drove the truck for nearly a year like that before I had it tuned.

My Chevy dealership had no issues with my Silverado warranty and would even clear the CEL when I would bring it in for service and simply write in the service summary that the truck had a CEL due to the headers.
 

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Selina - 2011 Black Diamond CTS-V Sedan
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24 Posts
I'm bringing this back from the dead....I've been trying to find out a definite answer myself. Keep seeing/hearing mixed responses. I'm curious as to what route I should go with the exhaust sound...either Kooks headers & X-Pipe to Stock Mufflers or just a Corsa Axleback Sport. I know that with the Corsas the ECU will not have to be tuned or touched whatsoever, but what about the Kooks headers option?! My dealer is cool, but he told me I could do whatever I want as long as I don't mess with the ECU in any way, shape or form. I like how they both sound, but I like the Kooks setup a TAD bit more...but if it can't be done then no biggie. Thanks in advance fellas! :thumbsup:
 

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ZIP
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51,864 Posts
I'd find another dealer. My dealer had no issues with either of my Vs being tuned. But you'll need a tune for headers. But I think Kooks to stock muffs is best...
 

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2010 CTS-V Sedan
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567 Posts
I had kooks to Touring. I added supplemental resonators and it was PERFECT. Quiet as can be on cruise, hit the throttle and scare everyone around you. I LOVED it. Zero drone, unlike the B&B that preceded it.
 

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None listed
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1,321 Posts
Just a heads-up, all Kooks long tube systems are now available with 'Green Cats'. The new cats are more expensive, but are guaranteed not to throw any check engine lights and don't require a tune. Feel free to call us if you have any questions, 443-730-9428
 

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CTS
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86 Posts
I had kooks to Touring. I added supplemental resonators and it was PERFECT. Quiet as can be on cruise, hit the throttle and scare everyone around you. I LOVED it. Zero drone, unlike the B&B that preceded it.
Did you add the resonators to eliminate raspiness, quiet system down overall or both? What resonators did you add and where did you add them in line?
 

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2010 CTS-V Sedan
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567 Posts
Did you add the resonators to eliminate raspiness, quiet system down overall or both? What resonators did you add and where did you add them in line?
Honestly you'd have to ask D3 what resonators they use. They were in-line after the cats. Very slim. I added them because without them, I was telegraphing EVERY throttle input to the cars around me quiet aggressively. Even light throttle. Adding the resonators toned down the light throttle inputs without really diminishing the wail when I meant it. They tell me it will reduce the rasp as well, but I never noticed much of a rasp either way in general.
 
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