Ok guys so I was wondering if any of you have found the need to install a dynojet power vision, power commander or EFI tuner on yours bikes. My 2008 Honda gl1800 backfires some on excel not bad but thinking maybe I might be in need in for one of this products. I had a power commander on my Harvey (gone) when I had it and did seem to help. I'm open to all recommendations/suggestions/ tips. (is there anything I should get checked out ?) I'll wait for answers and your views on this subject before I go running to get one.