Can i reset my ecu withouy conecting all those silly connecters together and if i fill it with optimax will it program itself to run on that because im running esso 97ron at the moment and its running like a dream but if i put optimax or ultimate in it runs slugish.??????????????????????????/

 

ECU will eventually adapt to the new fuel, ECU reset is much quicker though or disconnect the battery for an couple of hours.

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