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  1. #11
    VXRacing ahead
    Join Date
    20th June 2010
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    539

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    Quote Originally Posted by bembo449 View Post
    no probs , back when I had my first siggy , I was running an EDS map which was spec'd for air filter and full decat , it was epic even though I was still running the main cat in my set up , replacement main cat pipes were in development stages back then I think

    seems even though there now a few years old not much in the way off tuning / modding stuff out there .

  2. #12
    VXR enough
    Join Date
    9th August 2011
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    2,523

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    agreed , I guess its a costs for profit thing pal , siggys are rare in Europe so its probably not worth developing certain parts as very few will be sold to make it worth their while , I think I may do the front cat mod myself , I have some spare SS zorst pipe spare , then just buy a sport cat and weld it in , reposition the rear O2 , jobs a good un , I know a guy who has a 4WD rolling road too so maybe a session on that to get the optimum map setting for the stage of tune

  3. #13
    VXRed
    Join Date
    10th August 2017
    Posts
    92

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    before you relocate the secondary o2 sensor, try with a spacer/defouler instead.

    it'll probably work so you dont have to extra drilling and welding, spacer/defoulder works on the Saab 93 SS aero which have the same engine.

    Quote Originally Posted by happypostie View Post
    seems even though there now a few years old not much in the way off tuning / modding stuff out there .
    downpipe/decat and exhaust, intercooler.

    thats pretty much it without starting to go the custom-made route
    ^^Australian^^
    Car 1: 2016 Insignia VXR (Mods: none installed)
    Car 2: 2003 Mk7 Accord 2.4 (Mods: plenty)

  4. #14
    VXR enough
    Join Date
    9th August 2011
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    2,523

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    defouler ?? care to elaborate on that pal ?

  5. #15
    VXRed
    Join Date
    10th August 2017
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    92

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    Defouler like this:
    https://www.modernperformance.com/pr...-items-exhaust

    Common on eBay, it's basically a spacer (with a smaller hole) between the secondary o2 sensor (post-cat) and the exhaust pipe, it reduces the amount of air that the secondary o2 sensor catches.
    ^^Australian^^
    Car 1: 2016 Insignia VXR (Mods: none installed)
    Car 2: 2003 Mk7 Accord 2.4 (Mods: plenty)

  6. #16
    VXR enough
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    9th August 2011
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    2,523

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    interesting , so does this part mean theres no need for a sport cat as its decreased airflow makes the car think there is a cat fitted ?

  7. #17
    VXRed
    Join Date
    10th August 2017
    Posts
    92

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    Yes, although theres different defoulers available. Different sized holes to match the airflow.

    Personally ive always had a 100 cel high flow cat there, for the smell
    ^^Australian^^
    Car 1: 2016 Insignia VXR (Mods: none installed)
    Car 2: 2003 Mk7 Accord 2.4 (Mods: plenty)

  8. #18
    VXR enough
    Join Date
    9th August 2011
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    2,523

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    ok matey , good to know I have different options when I set about the task

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