| I can't imagine that would have any effect on producing more power. The profile of the cylinder head is, or should be) specially designed so that the flame starts right at the top of the dome. I would be very interested if you could tell any difference from this mod. If anything I would imagine you would experience worse running due to hot spots/pinking, not to mention the coke build up on the threads falling into the engine every time you remove the plug. | 
