Fitted mine on Saturday & removed secondary baffles. Test ride gave good impressions, but today (Sunday) it was obvious that I have a huge increase in acceleration, with power to pull from 40mph in 5th gear to 70mph in under 2 seconds. The raw acceleration when overtaking is awesome & the sound is absolutely fantastic, at least to me the rider. The bike is running really well, my only concern is the AFR especially if its running lean,is there a big advantage to running a "Power Commander" or can a new MAP be enough to ensure a good ratio? I'm not well up on all this technology.