Unless there is some physical proof. example
Dyno sheets (tork & horse power gains) some sort of mileage proof. Its all begaining to sound like Here say. This topic has been going on now for at least 4mo.s and the pics are a nice peice of work. but this is all we have seen. So still my 2cents is Not something I'd be willing to do to one of my heads, carbon build up is still always a factor( over time) no matter what the compression is.