as the title suggest what i mean..
actually the somendar singh groove are/is a cut infront of a sparkplug in cylinder head in diesel/pterol engine.. it is said that it improves turbulence and thereby the complete/even burn of fuel,, hence more mpg...
so has anybody tried it ? the man behind this logic is somender singh and he has a US patent as well..

here is the site of the scientist

here is a video of the somender sinngh

please if any one either did it on their single cylinder bikes do update us..