|I agree completely with Geoff. Both his car and mine use the Range Rover/RV8 fuel injection kit and quite honestly it is light years away from the sophistication of a modern car's electronic engine management. I would actually reckon that servicing my car is simpler than servicing a factory BV8 because there are no carbs to tune and fiddle with, and the electronic distributor needs no attention either.
I purchased my engine with all the efi kit from ebay. There is precious little monitoring of the engine - no knock sensors or anything like. All you have is a water temp sensor, a fuel temp sensor, the throttle potentiometer, the idle-speed stepper motor and the hot wire air flow meter. Of course on the RV8 you will also have lambda sensors in the exhaust. But basically, if it works and the car runs properly, there is nothing to touch or adjust. When I built mine I plugged all these 20 year old components together and it worked first time. I wouldn't be afraid of it - get stuck in, service it yourself and save loads of money!