In message . com,
robgraham writes
"That means you can advance the timing and raise the compression ratio
or turbo boost higher with leaded petrol than is possible with unleaded
or LRP, without detonation. That equals more power from your engine. If
you are involved in racing where seconds count, that could be the edge
you are looking for."

I'm driving a 50 year old single cylinder cultivator !! Do I need to
add anything more ?

Yes. A nitrous oxide injector at the air manifold.

--
Clive Mitchell
http://www.bigclive.com