MK4 R32 : 200 Cell Sports CATs; struggling with P0420 & P0430 codes

Discussion in 'VR5, VR6 & Wx' started by G60Dub, Jul 17, 2013.

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  1. G60Dub

    G60Dub Forum Member

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    Well that bloody sucks... What appear to be brand new CATs have thrown up he emissions light after 110 miles and about 7 cold start journeys and one hot start after filling up. Right after I filled up pulled out the garage and ping.... Away for the weekend without the laptop so will get it on VCDS on Monday night ..
     
    G60Dub, Aug 23, 2013
    #41
  2. GVK

    GVK Paid Member Paid Member

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    Sports cats again? :cry:
     
    GVK, Aug 23, 2013
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  3. G60Dub

    G60Dub Forum Member

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    Yup... No one else on R32OC seems to have problems with the same CATs... Something's obviously uspetting it. Wonder if its the calibration? I have 1990s R32 ECU to test... Probably worthwhile sticking it in and running on it for a few days to draw a comparison.

    Stuck it on VVDS last night too and no faults logged with fuel trims looking good too... Meh!
     
    G60Dub, Aug 23, 2013
    #43
  4. GVK

    GVK Paid Member Paid Member

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    If it's all good with OEM cats, surely it's the sports cats at fault?
     
    GVK, Aug 23, 2013
    #44
  5. MUSHY 16V

    MUSHY 16V Moderator Staff Member Moderator

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    what fuel did you use
    i found when mine had the 2.8 it didn't like runing on 95 mpg would drop buy a good bit plus didn't run as good
     
    MUSHY 16V, Aug 23, 2013
    #45
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