Date: Sat, 26 Mar 2005 22:24:18 GMT From: "James Sweet" <jamessweetnospamail.com> Subject: Re: occasional use of high octane petrol
> > One other reason that I think the B201 Saab engines run better on > higher-octane fuel is because they produce most of their power in the 3000 > to 4000 rpm range. > It's more that they're high performance engines designed to produce a lot of power from a small displacement. The cam profile, compression ratio, and ignition timing are optimized for the most power with the least amount of detonation so they'll perform better on higher octane fuel.