I currently have an 04 Kodiak 450.  Does a Spark Enhancer really work?  For example, what brands work and do not work on my bike.  

I just joined and asked about an reverse overide switch...Do you have one on yours???  Does yours???   Have you had any problems in 4 diff lock forward or reverse???  

i see alot of those around, some work a little some don't.

usually the best thing you can do for spark is to adavnce it 4 degree's.

on some units you do this by purchasing a performance cdi box. and others you do it by slotting the factory stator bolts holes or buying a slotted stator.