GEMS is fairly waterproof, but not that easy to strip to bare minimums and get sweet

Plus the ECU won't allow a retune up etc to assist with mods / gearing / changes unless a EPROM
is fitted and serious money thrown at it

I have just finished Megasq…

Devon 4x4 : Off-Road Forum – Vehicle Prep

Tip:

Engine Bay Protection<br> Placing a tarp across the front of the 4x4 minimizes water entering the engine bay by creating a bow wave, provided forward momentum is maintained. The result is less water for the radiator fan to spray over the ignition system, less chance of water entering the air intake and less likely for the fan to propel its way up to and through the radiator. Diesel 4x4 's are usually better for water crossings as you do not have the ignition system to worry about. Water in the ignition system usually results in a stalled engine and not actual engine damage, though this is of little comfort when you find yourself stuck in the middle of a crossing. Depending on the water depth, its advisable to climb out of your window rather than open the door and flood your carpets. To minimize stalling from a wet ignition, it's a good idea to spray all the ignition system with water repellent beforehand.