yeah its all working.. finally managed to reset the ECU (about the 40th go) and the light has now stayed off.
Ok, will probably get a right slating for this but i havent really noticed any difference. Took kingbiscuit out as well and it didnt seem any faster than his Zed. Its hard to say without comparing the before and after side by side or without a dyno run though!
One thing as well, my MPG has dropped, dont know whether its my driving changing or the plenum spacer?!