I've had my share of electrical gremlins since installing my efi system. Even though my cars electrical was all sound, it was sound to period correct standards. Which obviously isn't good enough for these sensitive systems in today's efi's. I have moved wires, shielded wires, cleaned up grounds and added grounds and what not over the time I've been running this efi. In all my car runs quite decent now, but still seems like something's not quite there yet. Other than going to a sportsman ECU, there's just one area of electrical that's nagging at me a bit. Anyone have any thoughts on the proximity of the throttlebody harness to the distributor on a sbc? I tried to keep the harness away from the distributor as much as possible, but there's only so much one can do. It is my understanding that delicate low voltage sensors are quite sensitive to noise, and there must be a ton of noise inside that distributor cap. Am I just over thinking it, or is there any benefit to shielding the whole throttle body harness?