hi to all, repairing the ecu iaw 59f 5af and 4af gas me and happened to have the requests of the type : "I can modify a bit the ecu to make it go better?"
now we all know that these cars suffer from a bit of performance due to methane, but how should I do? which criteria to use non-methane???

available for read and write, I have the cdc marelli tour and kess v2 obd - titanium and winols to map.

what advice do you give me???