Question:
Is it possible to change a map on a Cosworth or Caterham MBE ECU?

Answer:
All Cosworth & Caterham MBE ECUs are locked during manufacture, which means they cannot be modified in any way. You can only use our CAN mapping kit & Easimap 6 software for Real Time Viewing as an aid to diagnosing faults with sensors & replacement or setting up of throttle pots.

The easiest way to discover whether the ECU is locked or not is that when you connect to the ECU using Easimap 6 and the basic CAN mapping kit, if you look at the device information which is selected from one of the icons across the top of Easimap 6, if the box comes up blank, then the ECU is locked. The same will happen if you try to access any of the maps.

Warning under no conditions, should you attempt to download anything into locked ECUs, they are designed to permanently crash and are irrecoverable.