im sure he said its bigger compresser with the cut back blades ect.... but its the one that olie ran with around 300bhp.... and the guy i got it from only ever got his car mapped with it and made 289bhp with a bleed valve and would boost 2bar and drop to like 1.5bar so he said if i had a decent boost controller it would hold like 1.8/9 bar and boost to around 2.1bar lol