for their superchargers. They will do the install in Delaware for a while until they have several on the road and then market a kit like the one for the 2.8. They are claiming 250 hp from 170 hp. 2.3 (2.5) double vanos engine ('99 and 2000)--part of '99--double vanos engine. not a bad 6 grand or so spent, especially if you're looking at a new 3.0 or Mz3. Their website is EuropeanRacing.com I found this in a '99 Bimmer magazine and just noticed the ad....and called.......sure didnt see it here before. I find that extra horsepower is not needed for me 'cause I never drive over the posted speeds and 170 hp. is plenty for me!!