Whats the difference between these and is the jap import WRX faster / better than the STi?

You need to ellaborate a bit more, what year WRX/STi are you asking about(clssic shape or new shape etc). Also the actual year is important as STIs power kept changing as years passed etc

Paul

I think you need to be a little more specific on models;)

I dont even bother comparing these days. If you take a drive out on the road, you could come across two imprezas - a UK WRX and a WRX STi8. The badge, a lot of the time doesnt really tell the story as people like to fiddle:D