This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

booster

  1. G

    939 remap / booster plug

    Has anybody had a full remap done? I am in Uk and am mainly looking to smooth out power delivery when you roll on /off . If so was it effective ? also for information I just fitted a second hand booster plug from a Darvel as it was cheap on Ebay onto my 939 had to mod the connectors to fit but...
    • gus
    • Thread
    • 939 booster plug remap
    • Replies: 1
    • Forum: Mechanical
  2. M

    Booster plug

    Anybody else install a booster plug I did I really like it I don't know if they gave me any more horsepower but it does run better.