i hav had 2 jap imports in the past but sold thm on quite quickly but bout a yr ago a bought a s reg uk impreza.this dnt seem 2 hav the umpff the imports had.av been told its got a smaller turbo on in ,ad like 2 keep the car as standard as poss,makes it easier 2 sell on if it dnt luk like its been abused,also a tried 2 fit a z4 ecu but it failed 2 start,is that ecu out ov a jap model ?just want a few more bhp without goin daft.ecu chip ??