ECM Download

Discussion in 'General Harley Davidson Topic' started by youngcustom, May 30, 2013.

  1. youngcustom

    youngcustom New Member

    Had true Vance and Hines duals installed on my Ultra, so I had Harley download the ECM. Bike runs lousy now spits and pops around 2200 RPMs. I didn't mention to them that I had S & S 510 cams installed. I guess my question is, does the larger cam matter? The bike ran great before I had the download.
    Last edited by a moderator: May 30, 2013
  2. Jack Klarich

    Jack Klarich Guest