Preventive maintenance is the key. We change the oil and other fluids well before the guidelines and use only synthetic oil. We replace small parts and other sub-systems well before trouble appears. We keep the electronic fuel control system in top shape by replacing all of the sensors periodically, usually within 60K. I have also found it good to reground the frame, engine block, and chassis. The sensors are sensitive to even less that 1/2 a volt and the system is usually grounded only by a strap to the block at the starter. Adding multiple grounds directly from the battery terminal to other points, keeps all of the sensors functioning properly.