Interesting article...
" When hydrocarbons like gasoline combust, the burn process actually happens in multiple stages."
For the first time, new in-cylinder camera tech has now provided pictures of waves, or these stages he speaks of. I will try to find the pics and post up. We've got lots of complicated science going on in those cylinders . I will post them when I find them again, lol...
http://www.innovatemotorsports.com/resources/rich.php
