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Stage2 with OEM cat

Starry Nov 25, 2018

  1. Starry

    Starry S3 8V saloon... APR Stage 2....(-:

    1,020
    597
    113
    A mate of mine has just bought an S3 with an mrc stage2 map using a Miltek de-cat. He doesn't like the sound so has reinstalled the stock cat/downpipe, I told him he would need a remap or at least a map tweek. He then rang MRC and the girl on the phone said it would be fine. I'm surprised at this and would of thought the cat would not cope with the flow needed now. The cars running 410bhp.
     
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  3. AJ Jacob

    AJ Jacob AJ

    261
    198
    43
    It’s fine to have the stock exhaust but you will lose some of the power gains and won’t hear any of the pop and crackles
     
  4. MaxBoostMRC

    MaxBoostMRC Member

    87
    39
    18
    Pops and bangs will kill the cat.
     
  5. Starry

    Starry S3 8V saloon... APR Stage 2....(-:

    1,020
    597
    113
    I got him to ring back as I was sure the info was not correct, it seems there was a mix up and it will need a map tweek.
     

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