I just had a chance to really test the new ECM flash #2 (for stumble and a little more power) that I purchased and how nice it is.:lol: They say it's not much more power but it really does feel like there is. If it's just a faster throttle response, I can't believe the difference that makes or how bad the original was. It seems to really pull harder and faster than ever and no more stumble yet to be found. Thanks to Fred H. and Guhl Motors for stepping up and doing this to make the bike safe again.:thumbup: It actually does feel like a different bike now.