Well then how did you splice into the wiring? Did you solder the connections or use clip-connects? If you didnt solder it or hell even if you did perhaps when you moved it to a new location you caused a strain on the connections. This could cause them to wiggle loose due to chassis vibration and cause an intermitant signal. Second option is perhaps the program on the V-AFC is horribly unrealistic. With a vtec problem map sensor problem and rich/lean problem its quite simple what your problem is its the V-AFC. It deals with all three of those and you also moved it prior to the MIL. Go check it out and if you cant figure out whats wrong check it out again.