Has anyone used a degree key? I read where it suppose to advance your timing and want to know if this product works?

 

go to a website called mobiledyno.com (or something very close to that). they have a section of dyno runs on a banshee which include the key.

it will move your powerband up in the rev range and increase power slightly, even on a stock ported motor.

 

Yes , it works. But so does slotting your stock stator plate and that is adjustable and allows more advance.