I purchased a new Vortex CDI for my 450. You can buy this from Honda of St John's for $400.00 They are in Portland, Oregon 503-286-8817. This thing is great!! You have 10 different settings for traction control. It has a thumb adjustment switch that you mount on the handle bars on the left side. It gets a little tight when you have hand guards and the hot start, but you just have to move some things around a little. It took around 5 minutes to install. Yes, they include all of the hardware. Plug in and go. For testing and adjustment you leave your hood off. I left my on one setting. It takes are R's from 9,800 to 11,500 rpm. You can not believe the difference. I have a HRC kit, FMF ti 4 series exhaust and now the Vortex. I run MX and XC. I used to start in second on MX running a 13-38 set-up. I think I could easly start in 3rd. I am going to try going back to a 14-38 for MX and XC. I did not have time to put my RAZAR 2's on and see but the way this things pulls I am sure starting in second with 20's on is no problem. I had no problems smoking the CRF's all weekend long out of the starts. And the YFZ's had no chance. I was worried about spending the $400 but it is worth it. I will update on the XC set-up this weekend. By the way it is $320 less than Duncan racing. And Bob at St Johns is getting another shipment this week!