Livernois DP's

Discussion in 'Generation 4 - Performance Upgrades' started by NotBadForALincoln, Jul 9, 2018.

  1. NotBadForALincoln

    NotBadForALincoln New Member

    Joined:
    May 9, 2018
    Messages:
    9
    Likes Received:
    6
    Gender:
    Male
    If i opt to get the DP's with no Cats, will they tune out the check engine light or will i have to get some sort of eliminator?
     
  2. SM105K

    SM105K SHO Member

    Joined:
    May 3, 2018
    Messages:
    358
    Likes Received:
    294
    Gender:
    Male
    Occupation:
    Executive Chef
    Location:
    Arizona
    They will tune out the CEL.
     
    NotBadForALincoln likes this.
  3. NotBadForALincoln

    NotBadForALincoln New Member

    Joined:
    May 9, 2018
    Messages:
    9
    Likes Received:
    6
    Gender:
    Male
    Thank you.
     
  4. bpd1151

    bpd1151 Lurking Around

    Joined:
    Feb 21, 2010
    Messages:
    1,560
    Likes Received:
    2,769
    Gender:
    Male
    Occupation:
    LEO 23+yrs
    Location:
    SHOcago 'Burbs
    Although the CEL won't be visible to you, your car still won't pass emissions though, as the readiness indicators will be programmed off, thus causing a 'fail' at your respective testing facility.

    Just FYI.
     
  5. NotBadForALincoln

    NotBadForALincoln New Member

    Joined:
    May 9, 2018
    Messages:
    9
    Likes Received:
    6
    Gender:
    Male
    Good to know.

    Sent from my SM-G960U using Tapatalk
     
  6. 6500rpm

    6500rpm Quality Always Shoots Straight

    Joined:
    Jun 21, 2016
    Messages:
    291
    Likes Received:
    310
    Gender:
    Male
    Occupation:
    Journeyman Fleet Tech
    Location:
    The safe zone outside metro St Louis
    Do they make a "cheater" HO2S2 to fool the readiness test?
     
  7. StealBlueSho

    StealBlueSho SHO Member

    Joined:
    Jan 22, 2015
    Messages:
    1,225
    Likes Received:
    1,219
    Gender:
    Male
    Location:
    Warrenton, VA
    There are defoulers that work...


    Sent from my iPhone using Tapatalk
     
    SHOdded likes this.
  8. OmaHahn

    OmaHahn SHO Member

    Joined:
    Nov 14, 2014
    Messages:
    859
    Likes Received:
    533
    Location:
    Nebraska
    Home Page:
    Is there a real, tested benefit of not having cats on DPs?
     
  9. Johnbigdog

    Johnbigdog SHO Member

    Joined:
    Feb 17, 2017
    Messages:
    629
    Likes Received:
    639
    Gender:
    Male
    Location:
    michigain
    Well, I have not tested it, but you have a honey comb in the exhaust stream. It's a restriction no matter how you look at it. Flow will be reduced some. If you can't poop, you won't eat. When the exhaust is exiting it creates a vacuum behind it as well as a pulse. This will be affected by flow characteristics. Flow out easier, flow in easier.

    Turbochargers need expanding gasses/heat to spin the turbine and subsequent compressor. If those gasses can't get out, there is no spool.

    Also, catless downpipe weigh less ;) so faster car. Well, I may be pushing it here.

    How much of a performance gain there is with one or the other is a question best asked to LAS. They likely have dynoed the same car with the two parts to get an idea of the actual difference.
     
    SHOdded and OmaHahn like this.
  10. limited02

    limited02 SHO Member

    Joined:
    Apr 18, 2016
    Messages:
    326
    Likes Received:
    355
    Gender:
    Male
    SHOdded likes this.
  11. Signal13

    Signal13 Member

    Joined:
    Jul 15, 2018
    Messages:
    47
    Likes Received:
    22
    Location:
    North Texas
    New guy question,
    Is there any drawback to just using the LMS downpipes with the stock mufflers? I’m not the biggest fan of exhaust on a V6, just sounds anemic coming from a V8.


    Sent from my iPad using Tapatalk
     
  12. SHOdded

    SHOdded SHO Member

    Joined:
    Dec 25, 2011
    Messages:
    7,086
    Likes Received:
    2,896
    Location:
    Maryland
    IDK. The Corsa sounds pretty good, Dynomax mufflers too, and then there is bpd's custom exhaust, to mention a few. Drone can be tuned out with a custom resonator.
     
    Signal13 likes this.
  13. ToMang07

    ToMang07 New Member

    Joined:
    Jul 11, 2018
    Messages:
    28
    Likes Received:
    18
    Gender:
    Male
    Location:
    Maine
    Dynomax on mine..... I like them a lot, however they do get a bit of a loud drone at certain RMPs, mostly uphill tho. If it bothers me I just use the paddle shifters to switch gears and forget about it. Just FYI. (I'm catless tho)
     
    SHOdded and Signal13 like this.
  14. ToMang07

    ToMang07 New Member

    Joined:
    Jul 11, 2018
    Messages:
    28
    Likes Received:
    18
    Gender:
    Male
    Location:
    Maine
    And a mod fix that to RPMs? lol
     
    Signal13 likes this.

Share This Page

If you wish to help keep SHOforum running, please click the donation button below