has anyone out there got one of these? it seems like a really good and fairly simple mod and is also quite cheap compared to others but i dont think i can remember anyone out there having one. for anyone who has what do you think of it and how does it perform?

It's a good mod..

I had my friend checked out how many mm increase for the TB for maximum efficiency taking into considerations my mods and future mods and I got back with a 3mm increase over the already good enough 65mm stock TB..

Speak to Dave and he'll fill you in... he has got a 70mm TB unit I think and he is currently working on a twin butterfly system...