WR250R ECU FLASH Home › Forums › Motorcycle Talk › WR250R ECU FLASH Tagged: ecu, flash, wr250r This topic has 0 replies, 1 voice, and was last updated 5 years, 7 months ago by aces2splash. Viewing 1 post (of 1 total) Author Posts April 29, 2019 at 5:02 pm #16265 aces2splashParticipant Cycle Cruza who did you use to flash the ECU on your WR250R and is it necessary if I had just changed the header and tail pipe with a stock air box? Thanks, Wade Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In