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Cadillac ATS Technical Discussion Forum Discussion, Exhaust Work in Cadillac ATS Discussion Forums; Originally Posted by Atswatcher Reducing weight at the very bottom of the car should not be a priority, since it ...
  1. #16
    Rozay619 is offline Cadillac Owners Member
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    Re: Exhaust Work

    Quote Originally Posted by Atswatcher View Post
    Reducing weight at the very bottom of the car should not be a priority, since it raises the center of gravity. Good clean sound is the goal of course.
    The weight reduction wasn't even an issue, more of an afterthought!

  2. #17
    ewired's Avatar
    ewired is offline Cadillac Owners Fanatic
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    MAGNAFLOW has issued a part number 15194 for 2.0L and 15196 for 3.6L. However these are just recently added which means 3-6 months for actual product

  3. #18
    mikesul is offline Cadillac Owners Enthusiast
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    Re: Exhaust Work

    They did the same thing for the CTS coupe when it came out. I waited 6+ months for the part to be available.

  4. #19
    Rozay619 is offline Cadillac Owners Member
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    Re: Exhaust Work

    Quote Originally Posted by mikesul View Post
    They did the same thing for the CTS coupe when it came out. I waited 6+ months for the part to be available.
    I'm too impatient to wait 6 months.. plus the cost of it is going to be close to double what an exhaust/muffler shop would charge, IMO..

  5. #20
    Pfadt Engineering is offline Authorized Vendor PLATINUM
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    Re: Exhaust Work

    Quote Originally Posted by Rozay619 View Post
    Hey guys, I am going to get some exhaust work done tomorrow, since there is no cat-back or axle-back exhaust systems available yet. Not really concerned with the performance increase as much as i would like to hear the vehicle purr... Any suggestions, I’m thinking of removing the large resonator at the back and the smaller one in the middle back of the vehicle and use 2 1/2 or 3 1/2 straight tubing from what looks like the Catylic Converter. I want the tail pipes to look the same as they do now. I am assuming this picture is correct; I circled the 2 in yellow i think are resonators, and the red i think is the Cat... please correct me if I am wrong. Any suggestions would be great!!

    Thanks,
    Mike
    Mike,

    Nice work on getting a jump on your exhaust work. Contrary to that one other poster, I do believe the red circled piece is a cat. There is a close coupled cat in the downpipe and this is the secondary cat. I have not cut one open, but from the GM CAD models, it shows a matrix inside of it, not baffles like a resonator. I could be wrong.

    We'll be launching our downpipe soon, picked up 15 hp on the dyno, downpipe only.

    Downpipe - small.jpg

    -Aaron
    Aaron Pfadt
    Pfadt Race Engineering
    888-972-2464
    www.pfadtracing.com
    info@pfadtracing.com


  6. #21
    Rozay619 is offline Cadillac Owners Member
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    Re: Exhaust Work

    Here is two quick sound clips of my exhaust... Ill be trying the Go Pro tomorrow if the weather holds up.

    http://m.youtube.com/watch?v=RRZlKk-...e_gdata_player

    http://m.youtube.com/watch?feature=plcp&v=frKvt32EJvk

    Hopefully the links work.

    Mike

  7. #22
    Its an ATS is offline Cadillac Owners Fanatic
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    Quote Originally Posted by ewired
    MAGNAFLOW has issued a part number 15194 for 2.0L and 15196 for 3.6L. However these are just recently added which means 3-6 months for actual product
    Just talked my magnaflow rep. Those are for the RWD ATS, their engineer will be modifying to work with the AWD in the future.

  8. #23
    FDNY-L107's Avatar
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    Re: Exhaust Work

    Quote Originally Posted by Pfadt Engineering View Post
    Mike,

    Nice work on getting a jump on your exhaust work. Contrary to that one other poster, I do believe the red circled piece is a cat. There is a close coupled cat in the downpipe and this is the secondary cat. I have not cut one open, but from the GM CAD models, it shows a matrix inside of it, not baffles like a resonator. I could be wrong.

    We'll be launching our downpipe soon, picked up 15 hp on the dyno, downpipe only.

    Attachment 104254

    -Aaron
    I have a call into GM to identify that part number and description. Will post the information as soon as I received confirmation back from GM. Thanks.

  9. #24
    mikesul is offline Cadillac Owners Enthusiast
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    Re: Exhaust Work

    I just finished changing out the exhaust as Rozay619 did. Put in the Magnaflow "Camaro" muffler and took out the mid resonator and large rear muffler. Actually the sound seems to be slightly quieter at idle, but still sounds very nice at 6500 rpm. Weighed all the pieces removed and reinstalled and have a net loss of 23.7#. New muffler 12.6#, old middy 7.8#, and large rear 28.6#. At normal cruising speed (60-70 mph) the system is quieter with no drone at all.

  10. #25
    Rozay619 is offline Cadillac Owners Member
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    Re: Exhaust Work

    Quote Originally Posted by mikesul View Post
    I just finished changing out the exhaust as Rozay619 did. Put in the Magnaflow "Camaro" muffler and took out the mid resonator and large rear muffler. Actually the sound seems to be slightly quieter at idle, but still sounds very nice at 6500 rpm. Weighed all the pieces removed and reinstalled and have a net loss of 23.7#. New muffler 12.6#, old middy 7.8#, and large rear 28.6#. At normal cruising speed (60-70 mph) the system is quieter with no drone at all.
    Not a huge change, but nice IMO... what are your thoughts so far?? I'm sure yours sounds slightly different being a 6spd and mine auto..

  11. #26
    mikesul is offline Cadillac Owners Enthusiast
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    Re: Exhaust Work

    The sound is a little less raucous, no drone. Actually quieter at idle, less harsh. Nice roar at WOT, but the best part is no drone at highway cruising speeds. Overall, I am very happy with the change.

  12. #27
    Fraggy's Avatar
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    Hey Rozay,
    I'm in SD too! I'd love to hear your exhaust.

  13. #28
    cullama213 is offline Cadillac Owners Fanatic
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    Re: Exhaust Work

    Rozay and Mike,

    Any concerns about warranty issues?

    Just curious as I am interested in doing some mods to my 2.0...

  14. #29
    Fraggy's Avatar
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    I hope we get a response.

  15. #30
    Rongotti is offline Cadillac Owners Member
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    I have never seen adding exhaust void anything except something going wrong with the exhaust itself. I have put exhaust on my last few vehicles and never had any problem whatsoever. I plan on doing mine but am waiting for ATS specific hardware

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