I'm not really clued up on the N/As i'm afraid. Could the standard 4e ECU run the coilpacks though ? The brown colour 4EFE corolla injectors are an upgrade to the N/A starlet ones, what colour are the ones you have in the 5E ? Sorry i'm just answering your questions with questions lol. On a side note, were you at GTG college in Glasgow this week ? Saw a purple / blue EP91, thought it might have been yours ?