His site doesn't help much. There's a lot of 'seems to do this' and 'we think' that.. Smells a lot like snake oil or tiger repellant
However, it does link in with an idea I had a while back but just don't have the resources to follow up on - tapered squish pads. I thought about tapering the squish areas in towards the valves slightly - thought it may direct more of the mixture towards the plugs under compression, and help spread the flame front a bit wider. I'm probably wrong in several ways