Roderick - who fixes engine tuning equipmen, says -

 The world is full of high-powered, long-duration and multiple-spark
ignitions.
Don't waste effort re-inventing a low-return wheel.

There is some benefit from better ignitions in highly tuned engines
If there was significant unburnt fuel to gain advantage from in normally
ignited engines, it would show in exhaust emissions as unburnt hydrocarbons=
..

__________________

I commented to him:

Comment on HCs is a good point.
What sort of HC % dop you get at good tune and what is it to start?
(Brain suggests 14:1 or about 7% fuel?)

'Burning all the fuel' and 'burning it most power efficiently' can be
different. Real men aim at detonation - diesel or PD engines.

I don't imagine there is much in it for vehicles.

I note that ...  big bikes which run smoothly in normal use ...  seem to
misfire and run rough and sound as if they are running  badly when thrashed
to near/at/beyond their limit on a racetrack.


         R
--=20
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