hi iv nearly finished puting an mr2 turbo lump in a gen 6 celica i removed the charge cooler and replaced it for a large front mount intercooler and now im getting a 54 fault code i'v been told i need a rev 3 mr2 turbo ecu wich will clear the code but cant find a part number for it any help would be great and is there any thing eles i will need to do to fit the ecu