I was just searching around and found that titan motorsports did a dyno test and they showed a few whp and tq gains with these modified plugs. has any one used them or does any one know how they are modified to make more power? just looking for a way to squeeze every whp out of my motor I can for now.

 

pretty sure they have a v grove on the instide strap of the plug ... go to rockets site and pull up a picture of them

 

Pic does not reveal the secret mod.

 

i remeber scein a pick of one and its filed grove in it

 

very true.