Closed Thread
Results 1 to 8 of 8
  1. #1
    VXR newbie
    Join Date
    2nd September 2017
    Posts
    2

    Thumbs up Insignia vxr best de-cat

    Recommendations for the best Insignia VXR DeCat System?

  2. #2
    VXRed Andre's Avatar
    Join Date
    1st July 2011
    Posts
    159

    Default

    Have look over on Courtenay sport they do a sports system which is mot friendly that replaces both with a sports cat

  3. #3
    VXRed
    Join Date
    10th August 2017
    Posts
    69

    Default

    Which cat?

    There's 2 of them.

    One in the downpipe right after the turbo and one in the mid pipe before the car back exhaust.

    I have the RSS downpipe by regal autos port. Quality is ok (nit the best), then again price is better than Courtneys however.
    ^^Australian^^
    Car 1: 2016 Insignia VXR (Mods: none installed)
    Car 2: 2003 Mk7 Accord 2.4 (Mods: plenty)

  4. #4
    VXRed Andre's Avatar
    Join Date
    1st July 2011
    Posts
    159

    Default

    What bumps up the price of Courtenay's is the quality of the sports cat they use as it's designed to last also you are getting 2 sections in one don't forget running from the turbo to where you connect to the middle section under the car and a good quality pipe

  5. #5
    VXRed blooded
    Join Date
    11th July 2017
    Posts
    326

    Default

    You need a cat somewhere.... at the turbo is the worst place so that is the 1st one to go...however that creates the issue of the 2 lambda O2 sensors.
    2nd one needs to go AFTER a cat or be ecu programmed out.
    I'm being a cheap skate and just coring the cat at the turbo to see how it behaves before committing to a new downpipe...the mid pipe will likely stay simply for looks and MOT but i may get the cat in it swapped out for a sports unit.
    It all depends on your budget and final expectations....Courtenay decat downpipe and mid section is probably up there with the best but £1150

  6. #6
    VXRed
    Join Date
    10th August 2017
    Posts
    69

    Default

    Quote Originally Posted by Andre View Post
    What bumps up the price of Courtenay's is the quality of the sports cat they use as it's designed to last also you are getting 2 sections in one don't forget running from the turbo to where you connect to the middle section under the car and a good quality pipe
    Regal also sells a mid-pipe with a sport cat.... i think...

    If not you could always just buy an OBD2 compliant metal cat to put in there (the mid pipe that is), i think it just have to meet Euro4. Vibrant racing makes them IIRC

    On a side note i am pretty darn sure the Regal downpipes are made by Friedrich Motorsport

    Quote Originally Posted by genman View Post
    You need a cat somewhere.... at the turbo is the worst place so that is the 1st one to go...however that creates the issue of the 2 lambda O2 sensors.
    2nd one needs to go AFTER a cat or be ecu programmed out.
    You could cheese it with a defouler/spacer for the secondary O2 to avoid the CEL, it's used by the Saab 9-3 Aero 2.8T guys, being the same engine i dont see why it wont work here.

    I'm not sure you'd get much out of the mid pipe and catback exhaust, the OEM system is already a Remus @ 2.8 inch diameter pretty free flowing as is, I'm trying to focus on the intake side at the moment, trying to figure out intercooler piping to use with a spare intercooler I found lying around.
    Last edited by fredoops; 3rd September 2017 at 03:23 PM.
    ^^Australian^^
    Car 1: 2016 Insignia VXR (Mods: none installed)
    Car 2: 2003 Mk7 Accord 2.4 (Mods: plenty)

  7. #7
    VXR newbie
    Join Date
    2nd September 2017
    Posts
    2

    Default

    Thanks for the quick responses guys!

    I'm going to go with the Courtenay's sport cat!

  8. #8
    VXRacing ahead
    Join Date
    20th June 2010
    Posts
    521

    Default

    I have the Courtney one . And just removed the other cat and centre box.

Closed Thread

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts