Look at the inside of your ECU if it has two rows of 20 solder points in it there's a 90% chance they have the daughterboard and image for it. 16 bit ECU's are still in developement. Nistune does not give out commerical mapped chips...When you order Nistune the daughterboard will have the Image of the stock binary file on it..At that point you can change anything you want via software which is ten times eaiser than a hexeditor and 5 times easier than either Romeditor or Zcontrol. There's several places in the US that sell Nistune and one installer or you can get it direct from Aus.