Update!
Ok I've had my first hit out in anger with the GT3540R on my new 7M!
Where do I start......
I'm only running 10 psi right now, more to come soon.
It goes positive boost around the 2200 mark then will make it's 10 psi by 3000/3200 and hits HARD, I'm running the 1.06ar turbine housing as this motor will spin to 8000.
Driving impressions: It's an amazing Turbo around town you can keep it out of boost easily but have instant response if needed, I'm a bit old school so a 3 litre motor and an old T04 based turbo with this sort of power potential would have been a fire breathing nightmare!
Not so the GT3540 the car drives like stock idles in traffic then when you step on it the Jeckyl and Hyde thing happens (Or the Incredible Hulk thing) and it turns my placid well behaved Mk3 into a rocket ship!