Exhaust Dilemma. Kooks Headers.....
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  • 1 Post By thebigjimsho
2009-2014 Cadillac CTS-V Performance Mods Discussion, Exhaust Dilemma. Kooks Headers..... in Cadillac CTS-V Series Forum - 2009-2014; So my final round of mods is complete and car is a animal. Currently have a Customer blower cam installed, ...
  1. #1
    09CTSV is offline Cadillac Owners Member
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    Exhaust Dilemma. Kooks Headers.....

    So my final round of mods is complete and car is a animal. Currently have a Customer blower cam installed, 10 inch lower pulley, id 850 injectors, 50 mm idler, bracket relocater, Trunion upgrade and hardened pushrods, Air raid , Kooks 2 inch primaries headers coated , Kooks catted X pipe to the factory mufflers. Car is making 631 rwhp and 595 torque. Runs awesome and pulls like a freight train. Kooks was awesome quality fit and finish.

    My dilemma is I went with the factory exhaust hooked up to the Kooks system after reading and hearing many videos seemed along the lines of what I wanted. Somewhat aggressive but no rasp and still sounds good and quiet on highway. Prior to the cam install and kooks I had BB cat back exhaust system which I loved. I took that off hearing from people it would be too loud with the Kooks. Well the factory mufflers with the Kooks just doesnt seem to be cutting it for me. I want alittle more sound and noise. Factory is just too quiet. I pulled one muffler off and hooked up my old BB muffler to the pipe with a adapter and started it. Sounded bad ass and crisp but I am wondering how loud it will be under load at higher rpms . I am torn. Love the sound of the B and B but seems it might just be too loud and also dont want drone. I had some before but it was ok for most part. Wondering if it will be even more now with headers.??

    So does anyone have kooks with B and B axle back and high flo cats? Is there drone? Is it too loud? Has anyone installed resonators with the B and B and kooks to tone it down alittle?? Thanks guys.

    Yes i read about 9 million posts. Inconclusive findings....

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  3. #2
    thebigjimsho's Avatar
    thebigjimsho is offline Cadillac Owners 10000+ Posts
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    Just remember that it will be MUCH louder outside and behind the V, in general. I was shocked when someone showed me on video doing a driveby on the roadcourse with my Kooks/stock muffs setup.

    Make sure you won't be setting alarms and causing 911 calls with that setup. The Vs are so well isolated...
    Slizzo likes this.

  4. #3
    09CTSV is offline Cadillac Owners Member
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    Re: Exhaust Dilemma. Kooks Headers.....

    ya had my brother driving behind me yesterday in his 300 C and when we stopped he just said " man that thing is quiet" you hear alittle noise then just a rush of air" LOL
    I was used to sound in car before with just the BB cat back which i loved. Its much quieter then even that now with stock mufflers and headers.

    Been watching more videos and thinking maybe ill get a set of stainless works mufflers? Seem alittle more toned down and still deep and clear....anyone with Kooks headers, X pipe and SW mufflers???

    Boy this sucks.

    Too many options!

  5. #4
    Gary Wells is offline Cadillac Owners Connoisseur
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    Re: Exhaust Dilemma. Kooks Headers.....

    Kooks 2 test pipes 2 factory muffs?

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    09CTSV is offline Cadillac Owners Member
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    Re: Exhaust Dilemma. Kooks Headers.....

    Any one have videos of Kooks with cattless x pipe and factory muffs with cam?

  7. #6
    Gary Wells is offline Cadillac Owners Connoisseur
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    Re: Exhaust Dilemma. Kooks Headers.....

    If no videos I hit Donut Derelicts about once or twice a month with mine.
    Sort of loud, but very nice sound quality and I get quite a few props on the sound.

  8. #7
    Houdini's Avatar
    Houdini is online now Cadillac Owners Connoisseur
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    Re: Exhaust Dilemma. Kooks Headers.....

    I have kooks with catless xpipe to stock mufflers. I absolutely love it but I'm sure you'll think it is still too quiet (I don't think the catless xpipe really added much sound).

    I put electric cutouts in front of the mufflers so whenever I want it to be NASCAR nasty I open them up :


  9. #8
    Steve2011VCp is offline Cadillac Owners Member
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    I have same question, I'd like a bit more of a throaty sound, but not so loud it overpowers inside with the windows up; I've been thinking Kooks Headers, with X-Pipe to stock mufflers, will that help or create a performance/computer issue? Or is there a better option that also adds HP?

    I have a bone stock 11-V-Coupe.

  10. #9
    thebigjimsho's Avatar
    thebigjimsho is offline Cadillac Owners 10000+ Posts
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    SHO Convention 2010 13 Big James' with The V8 Cad…: http://youtu.be/gksnH_Pkfvw

    Sorry, I'm on mobile and just copied and pasted. If anyone wants to make that a link.

    That's Kooks catted headers w/ stock muffs.

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