Thanks, yes I have the Touring model. What RPM are you at 40 MPH? My drone is right at 2,000 - once I get the RPMs above that it sounds really good again. I find when driving I try to keep the tach below or above the 2,000 mark. I haven't had it on the highway much yet - I'm wondering if I'll be at 2,000 RPM at highway speeds (60- 75 MPH), Hoping to take it out on the freeway tomorrow to find out. Also, I'm going to have the shop that installed it recheck all the connections to make sure they are tight and there isn't anything rubbing. Thanks for your insights and the video.