Update.......
Dyno'd the R on the Loba L0400........
Peak torque up 10lbft Peak power up 25bhp
Although at the top end it doesn't run out of puff like the K04 and so at 7,000 rpm it is making over 50bhp more power and over 40lbft more torque.
Spool is very slightly better, but as near as makes no discernable difference.
The map is MUCH smoother and stable in conjunction with the turbo so around town at lower rpms it feels better and overall I'm very happy.
Big thanks to Steve Jr and Craig at my tuners Statllers for putting up with my pacing about like an expectant father!