Whats your opinion about PROCOM products for yamaha grizzly 660:High Performance CDI,Regulator/Rectifier, Magic Power Box ?.
Are they worth installing when you want to increase the quads power?
Are there any disadvantages when it comes to engine constancy ?

 

Anyone run one of these procom CDI's on their 660 grizzly? I just added a 2003 grizz to the riding stable, and the bighorn tires need some more omph to turn them faster