cheers for the replies guys. the 250 I have at the moment is slightly questionable, as the dyno appeared to be rather "happy". I'm guessing its more around the 240rwkw mark, but I intend to take it to DTS (where I had my original dyno run when the car was standard) and do a run before and after the IC. My problem is that Simon (extreme f6) lives on the other side of the country, so tuning and re-tuning or fixing slight problems will be one heck of a pain in the neck! Its for that reason I was going to try and do the IC, and then later I would most likely make a trip to melbourne to meet up with Chris (who worked for Simon on his canberra trip) to get it all sorted properly. Maybe I'll hold off on he IC for now! I was sort of just hoping that the ecu would detect cooler air and therefore make adjustments to suit. Sort of like driving on a -5 degree night in canberra!! whatever I decide to do, I will keep you guys posted and post my experiences! Maybe I'll try the IC, get it dyno'd and see how it goes, if it appears to be unsafe or I have advice it may become unsafe I will return the stock IC till I get the injectors and make the trip to melbourne! If anyone else has any thoughts, opinions or experiences with this sort of set up feel free to post up your comments!! the more info I get, the better judgement I can make.