ok I have a good grasp on ECU tuning just lacking the experience and points to start with,
I have sucessfully downloaded my cars rom changed my speed limiter and written back to it,
horray you say,
but I want to map for the fuel octane grade here which is 95RON and I want to know where to start tuning,
I currently dont have a wideband yet but is it possible to start tuning with datalogging software,
where is the first point to start on the map and which map do you modify first,
is their a write up for the actual tuning process anywhere,