ok here goes I have a 2000 2.5 rs thinking about turbo what is the diff between the US spec STI ecu and mine ? will it plug in to mine and still work with a turbo configuration I know the new valve timing will be turned off if there is no sensor detected. am I reasonable to asume that since they desided to use the 2.5 power plant as a base for the turbo that the used the same sensor set and the normal NA 2.5 and added the 8 or 10 wires to hook up the new valve system ? I know that the Jspec WRX STI and US spec WRX are very close in ECU the only diff is the new valve timing system. So am I right or wrong please tell me help me out