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This topic contains 5 replies, has 4 voices, and was last updated by Michael Breame Michael Breame 1 month ago.

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  • #125478
    Michael Breame
    Michael Breame
    Participant

    UK - England

    Posts: 2

    Good morning all. I have recently purchased my beautiful RS mk3 and got it on a rolling road and diagnostics and it only produced 315bhp as fuel pressure was dropping. Ford have just done their tests not under load and said fuel pressure is ok. Has anybody else had this issue and know how to rectify as ford are kind of wiping their hands of it



    MB75

    #125479

    Nemechins133
    Participant

    UK - England

    Posts: 17

    315 at the wheels? Sounds about right.

    #125491
    Michael Breame
    Michael Breame
    Participant

    UK - England

    Posts: 2

    Really but it was under load and giving it a little that the fuel pressure spiked and dropped all over the place and the Ecu stopped giving it the full beans and when trying to play with the ecu it couldn’t be tuned or anything and couldn’t then stage 1 it on remap. Just wondered if anyone else had any similar issues as she needs to be quicker! Lol



    MB75

    #125494
    71-bda
    71-bda
    Participant

    UK - England

    Posts: 5806

    Sounds like you have been doing multiple runs and its getting hot and reducing the power to save itself. Ambient air temp will affect power, as will altitude and fuel quality. If you have air temps of 25c and 97 octane, id be happy with 315 at the flywheel, you will not get 315 at the wheels on a std car, especially in the summer! Std 345 at flywheel would probably show 290 bhp  ish at front wheels on a 2wd  front drive dyno anyway at 20c .



    No nothing.

    No Mods. No rockers. Just a chunky knob.

    No tackiness.

    Std as Ford intended, but with a space saver wheel and jack and nuts and wheel brace. oh.. and flaps, a man has got to have flaps.

    Innit?

     

    #125501
    GM
    GM
    Participant

    UK - Wales

    Posts: 277

    Mine done 299 on dyno at wheels, loaded DS no need for second dyno as massive noticeable difference.

    #125507
    Michael Breame
    Michael Breame
    Participant

    UK - England

    Posts: 2

    Thanks everyone for all your input. Not multiple runs I’m afraid but it was the delivery of the fuel that was closing the ecu down and under more load/force/speed the ecu cut everything so it couldn’t be remapped. I want more speed! Lol. Is it worth the time extra ££££ to stage 2 the beautiful RS?



    MB75

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