1988-2002 Yamaha Blaster Adjustable High Performance CDI Unit yfs200This Yamaha Blaster CDI is a high performance part that is compatible with the Yamaha Blaster from 1988 to 2002. This allows you to advance the timing more and extract more power, broadening the power band. The OEM curve is relatively flat. If you advance the stator 4 degrees, you'll see performance gains everywhere. If you advance the stator 6 degrees, you'll see performance gains in the low to mid rpm range, but might start knocking at high RPM.