cornerslider
New Member
I've decided to swallow my pride, and just ask what might be perceived as a "dumb question"..... What is "flashing" an ECU, and what does it do? I used to have a Husqvarna SMR450R that I replaced the stock ECU with the "race" ECU matched to the Arrow dual exhaust I had on it. I honestly don't know what it did? I do know it ran 100% better, with noticeable power gains, and that was all without a PCV..... Does "flashing the ECU" still require the use of a PCV? I just want to know what I need to do once I get my 2016 RC390. I plan on doing a K&N filter with either an Arrow exhaust, or maybe the Werkes? Either way I know I'll have to do something. Any help would be appreciated-