Doppler Vairiator

Discussion in 'General Tuning' started by Fruddy, Jan 18, 2012.

  1. Fruddy

    Fruddy New Member

    Messages:
    17
    Rides:
    Aprilia SR50 ditech
    Require help!
    I have an Aprilia Sr50 Ditech Piaggio Engine, and have just recently bought a Doppler s3r exhaust however, the boke has lost a hell of a lot of power since fitting the pipe and 5 gram rollers :/ before i had a leo vince tt pipe with same weight rollers and was hitting like 50mph, i am clueless what to do. I have been told to buy a doppler variator or to lighten my rollers. it is beyond me why it has lost so much power as its getting to 35mph with the new pipe then slowly getting to 45mph :/
    Help would be appreciated a lot!
     
  2. murerg

    murerg MBK Hero!!!

    Messages:
    744
    What was wrong with the TT pipe?.. o_O

    Reduce weights on the rollers a bit.. test it and see how it goes. Remember that some exhausts perform better than others as well.
     
  3. FLENG2008

    FLENG2008 Member

    Messages:
    186
    Rides:
    04 vx 125
    try 3.5-4g rollers
     
  4. Canning1337

    Canning1337 Scooter Tuner

    Messages:
    110
    Rides:
    Yamaha Aerox 50
    I've got to be honest as well... I think I've lost a lot of power since fitting my Doppler S3R. I'm thinking I need to changing the wool inside the silencer, as I know that can have an effect on power. Let me know how it goes if you do decide to fit the Variator.
     
  5. Fruddy

    Fruddy New Member

    Messages:
    17
    Rides:
    Aprilia SR50 ditech
    TT pipe kinda broke numerous times but fixed it temporary haha, looked a nail tbh, so thought i'd buy a doppler!


     
  6. tErr0

    tErr0 Administrator Staff Member

    Messages:
    5,816
    Has the fuelling been adjusted at a dealer? That needs to be done.
     

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