I know how the bee*r's work lol I've seen them work first hand on friends car's.
I'm thinking the Bee*r I have must be faulty, I can't think of any other explanation!
I'll try and borrow a mates Bee*R to check. But first I'll attempt to wire it up the 'subaru' way:
Subaru Bee*r Rev Limiter Diy - Rexnet Subaru Forums