has any 1 tried the sparks advanced timing key?

 

Yes, I have one in my bike. I wouldn't recommend just the key alone. You will not see much of a increase with just the key alone. The key is designed to advance the timing on the bike. Unless you do internal mods to the motor, you will not need to advance the timing.

 

It may be different in the Honda but on the Raptor, it seems to help a stock unit only. Once built, I saw no gain with or without the key (on the dyno).