Emerald M3DK

The Emerald M3DK is plug compatible with the EU2 series K series. The old ROVER MBE unit was removed, along with the fuel trap. The vacuum tube feeding the fuel trap was blanked off at the throttle bodies. The M3DK was mounted on the bulkhead and the laptop cable was routed through the gearbox tunnel to the dashboard so that the ECU could be programmed in future from the passenger seat. The fan was rewired so that it was controlled by the M3DK instead of the thermo-switch in the top of the radiator - this is much more reliable and configurable.

M3DK-controllable fan: Take a 30amp relay and mount it near the horns. Unplug the fan thermo-switch connectors - plug green/black into relay pin 87, green into relay pin 86. Bridge relay pins 86 and 30. Find the slate wire/blue stripe wire going into the circular engine loom connector under the TBs - the wire terminates here and has no ongoing connection - take a feed from the empty side of the socket and run it to the relay - connect to pin 30. Voila, the fan is now controlled directly by the ECU

What a difference. The engine revs so much more quickly - it's more like a bike engine now rather than it's previous sluggish character. On the road the car feels much more urgent and the result is the car is quicker under acceleration. The only word to describe it is frantic. The popping and banging is still there on the over-run too. This is how the car should have been. The bad news is that it now I've had a taste of power and I want more!

Emerald M3DK