BMW themselves released the cure for pinging, cylinder base gaskets at about £7 each.
I have asked on the BMW forums, and no one has answered. Why do BMW's need dual plugging? Other air cooled bikes seem to manage fine without. It does allow later ignition timing, but I sometimes wonder if the timing was retarded without dual plugging wouldn't it still allow the engine to run smoother. It seems to me abit like the big bore kits. The extra CC's produce less power than the original cc's.. IE 20% increase in swept volume=15% increase in 'claimed' power. Mostly things claime dby people who do teh conversion come down to it 'feels like' so and so is better. I can positively state here, every time I clean my bike it feels like it is 5mph faster in all gears, and runs smoother. Very rarely do you get a catagoric measured difference. If you dont belive me try for your self. clean your bike , check the oil and air pressures and ride, It will feel better.
As an aside, on top gear they did a test recently and spent £15K adding go faster bits to a car. The road test speed increase was barely measurable. The most effective thing was doing a standard service.
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