Riva Yamaha MSD 701 Enhancer Ignition

Why should you replace your stock ignition unit (a.k.a. CDI or ECU) with an aftermarket model? If you modify your craft, or plan to, the stock ignition will limit the potential of your upgrades due to its conservative factory settings. Installing an aftermarket ignition will open the door to your engines performance potential by providing the critical adjustability required to match your engines modification level.