Cheers Kev & Nath, a big help both of you.
Kev its good to have an idea of what bits are common faults so that will come in handy
Nath how do you get hold of a Ford motorsport manifold then m8? Are they readly forsale somewhere

Your De-cat is it a full mongoose inc a d-cat pipe? and ther bluefin can reprogram the ecu to turn the light off when de-catted?