A little while ago I was advised to clean out my loom plugs and then spray on silicone spray as its best for weather proofing. I now have P1220 / P1221 error codes and think the plugs may be the issue. I've tried to clean out the throttle based plugs as best I can but could these error codes be brought about by a poor ecu connection? Anyone got any feeling about what this is? I'm on a new 68mm tb but with my old pedal. The car started fine a week or so ago and now I've built it up I get this!