will a high performeance spark plug give you eny more power or just last longer?

 

The platinum plugs will last longer before the electrodes get rounded off(plug wears out).But they won't last any longer than a normal plug if you are having plug fouling problems.

The only "high performance" plugs I know of are splitfires.Their ads are misleading.You will only get 1 spark,it won't split between the ground electrods or go right between them.It will jump to the electrode with the least resistance,just like a "normal" plug.

I think you are better off spending your $$$$ on other stuff.