Thats quite a good question there, me and my brother have just been discussing this 15 minutes ago! The Turbo won't be going in for quite a while because of insurance and stuff, and my brothers got 5 points so theres not a chance anybody insuring him! So, we was discussing performance upgrades for the 4EFE and popped up with the ECU remap in mind, planning on getting a price quote about this tomorrow. But what is the 5EFE like? Mr Dub i know you had one, what was the difference like? Will the Corolla Inlet Mani fit to this, and make any difference? How hard is it to fit? Full new wiring or isit plug and play? If its a simple step then i will keep on the lookout for an engine, and fit it in April/May.. Help would be appreciated Mr Dub!