"Peter Dohm" wrote in message
...
manufacture thousands of identical engines, as they would only have
needed to vary the ignition timing for all cylinders together and vary
the mixtures for the cylinders individually--which should be easy with
individual port ingection.

Individual cylinder mixture would not typically be based on a knock
sensor - that is usually done via exhaust O2 sensors or crankshaft
acceleration (if at all).

--
Geoff
The Sea Hawk at Wow Way d0t Com
remove spaces and make the obvious substitutions to reply by mail
When immigration is outlawed, only outlaws will immigrate.