Brozilla wrote:which is present in some Lude engines

That's because (as everyone knows) a2's are bullet proof and make so much powerrzzzz even if just running on spud juice, that they have no need of such piffling frivolities as a knock sensorMerlin wrote:You are correct but the H22a2 (UK 4th gen) and H22a5 (UK 97-98 5th gen) do not have knock sensors.
Well you use what you tune it to. Either the lowest you can get to be sure, or highest + knock sensor enabled.Merlin wrote:Could it be that the changes of us getting our hands on lower than 95 RON fuel is practically zero? Although the H22a8 does have a knock sensor and it says on the filler cap to use 95 RON.