I only ever run 98 octane unless I'm somewhere that only has normal unleaded. (In which case it will ping a bit)... Mine has never been gas converted, I've had 2 cars on gas, 1 converted and 1 factory. The factory one wasn't bad, but the converted one had some issues, plus I run my 147 litre tank and aim to install another 70 odd litre aux tank soon for more range (yeah I know, old petrol 4wd so no range really, LOL), so gas isn't on my list of mods.
My manual says the factory timing is 5 degrees or so without the vac advance pipe attached, and 15 with it attached, which is what I was referring to with the timing settings above.




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