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2019 Gpf MRC stage 1

RS3 FUN Jun 28, 2019

  1. RS3 FUN

    RS3 FUN Registered User

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    Has any 1 else seen the MRC stage 1 map from a 2019 Gpf model which made 450 ps when mapped but the standard car was below standard quoted figures. The previous 2018 pre GPF model standard was showing 420 ps on some Dynos before mapping and after mapping 470-480+ps. The new car seems to be very held back compared to the previous model and I have a new 2019 GPF model on order and I just don’t know if it is worth purchasing now that the car is been changed which is a shame.
     
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  3. D0C

    D0C Registered User

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    Buy a 67-68 plate car. Save some cash and get more noise.
     
  4. T-800

    T-800 Guest

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    Yep

    Another reason to avoid them.

    [​IMG]

    [​IMG]
     
  5. terminator x

    terminator x Registered User

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    **** all this CO2 GPF ********! Absolutely raging that new cars are being battered by this BS.

    TX.

    Sent from my BBB100-2 using Tapatalk
     
  6. RS3 FUN

    RS3 FUN Registered User

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    That car looks a bit more promising and the 5 pot sound. I have also seen that APR have got well over 500 bhp out of the Gpf version with turbo inlet pipe and intercooler added.
     
  7. T-800

    T-800 Guest

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    Yeah up on power / down on power regardless......

    The GPF has muted the soundtrack too.

    They can keep it.
     
  8. simonali

    simonali Guest

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    Apparently all VAG cars are getting a GPF whether they need one or not. The Bentley W12 doesn't require one but is still getting it regardless.
     
  9. DW81

    DW81 Registered User

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    I was having a conversation yesterday with another rs 8p owner on this topic.
    This is going to be the time now where aftermarket exhaust company’s will be probably be one of the first port of calls on all these new gpf fitted exhaust cars. This goes for bmw Mercedes owners as well.
     
  10. keenu

    keenu Registered User

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    Correct me if I am wrong, but does removing the GPF filter constitute an MOT failure?
     
  11. T-800

    T-800 Guest

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    It will indeed.
     
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  13. simonali

    simonali Guest

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    Yup. What it will actually mean is that aftermarket exhaust makers will more likely only be designing cat back systems from here on in. Changing a downpipe and removing the secondary cat which is a popular mod now will probably burn out a GPF and still cause a failure.
     
  14. paulmc

    paulmc Registered User

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    Surely the modders will remove the cat and GPF?? No cat fails MOT anyway. GPF MOT failure is not a problem for 3 year yet anyway
     
  15. terminator x

    terminator x Registered User

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    Downpipe is a PITA to keep changing though? Not a simple job afaik + doesn't it set off various warning sensors? Audi would take a dim view of it for sure.

    TX.

    Sent from my BBB100-2 using Tapatalk
     
  16. T-800

    T-800 Guest

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    Removing 2nd cats doesn’t need any re-tune.
    I had my rear box replaced on an earlier RS 3 with 2nd cats removed under warranty.

    Removing the GPF would require 4 sensors dealt with also

    2 in the top of them and 2 behind them.

    [​IMG]
     
    Last edited by a moderator: Jul 1, 2019
  17. paulmc

    paulmc Registered User

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    Only 1 advantage I can see. If VCDS can monitor the Pressure sensors it will give you a good idea if exhaust back pressure is causing performance issues on big power cars. Always a silver lining:wink:
     
  18. AudiNutta

    AudiNutta Moderator Staff Member Moderator Gold Supporter

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    That sounds decent! Also it bounced off the Rev limiter instead of pulling back violently, if you hit it in mine any pull you were doing is game over... feels and sounds like the car has gone bang haha.
     
  19. Dan_DJT

    Dan_DJT RS3 Saloon

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    There is the delta Pressure sensor too as well as 4x temp sensors
     
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  20. Dan_DJT

    Dan_DJT RS3 Saloon

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    Its a delta pressure sensor tho so doesnt give a good indication of exhaust back pressure
     
    Last edited: Jul 2, 2019
  21. paulmc

    paulmc Registered User

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    Surely the ecu calculates the DP from the pressure sensor inputs. If vcds can read the sensor it will read mb??
     
  22. Dan_DJT

    Dan_DJT RS3 Saloon

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    The sensor measures dp directly and gives it to the ECU. The value will be in mbar but isnt ebp
     
  23. paulmc

    paulmc Registered User

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    Just looked at the above pic again and see what you are saying. I guess it makes it easy to knock something up though.
     
  24. Dan_DJT

    Dan_DJT RS3 Saloon

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    There are a lot of diagnostics on the sensor and the pressure that it measures. Removing the gpf (or gutting them and leaving the empty cans) would be quite easy. The temp sensors would still work just fine. They are only there for monitoring an active regen which doesnt happen very often.

    By-passing the pressure is harder as there are going to be at least 4 OBD monitors looking at the pressure. The empty cans or removed GPF, soot loading and blocked GPF are all detected via the pressure.
     
  25. paulmc

    paulmc Registered User

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    Yeah will be much the same process as DPF. Once the file writers figure it out it will be easy enough. I have not looked at the GPF file yet so can’t comment on its structure. Same ECU as non GPF car so can’t be that different
     
  26. Dan_DJT

    Dan_DJT RS3 Saloon

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    I've found there is quite a lot more code for a GPF equipped car. Easy to turn the monitors off and dump the GPF, harder to find power and stay legal.
     
  27. paulmc

    paulmc Registered User

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    Thays good to know. Hard to stay legal with no cats or GPF:sm4:
     
  28. Legoless

    Legoless Registered User

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    Milltek has a downpipe for 2019 with GPF bypass now, but needs a tune apparently to keep engine from going into safe..
     

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