Currently my car has had some drivetrain issues and so I baby the crap out of it, It rarely sees above 5 psi of boost. But I still daily it. Its a little rough to drive. Pedal is stiff (i tend to like that). Engagement zone is really short. I think most of my issues stem from being cammed (I have almost no power down low and bog down really easy at take off... also a current tune issue, way to rich around take off...) you kind of have to slip the clutch quite a bit to take off on hills. Again, I think its related to my car and tune. I like the way it engages and what not though, its just a little tougher to drive smooth. I cannot speak to the way it holds torque because I haven't put it under any serious loading yet. If you get up in the rpms the car does launch really well.