I saw an ad for them in a magazine the other day, and it was pretty convincing. Supposedly they create a bigger spark than a conventional spark plug which causes the fuel to burn better, which in turn increases power and fuel economy.

Has anybody tried these yet?

This site seems to back up what I read: http://www.greencarcongress.com/2006...plug_demo.html

 

Sorry never tried or even seen those plugs.

 

I would stick with OEM Volvo plugs. Too strong of a spark can cause damage on the piston top.


JPN