Update:
I have my car back now. Picked it up in Monday. Thought I'd drive it about for a few days before posting results. Anyways, here's the dyno:
It made good power. Steve at JBS said he would get it over 300bhp, so mission accomplished there. I was initially a little disapointed at the torque value as I've seen higher. Spoke to Steve who explained torque is pegged at the value in the dyno to protect the rods. The turbo has more in it. If I want to fit new rods, he can add more.
On the road the car is very different to how is was with the K03s. Power builds very smoothly rather than a kick in the back at low revs. I've not had a chance to log fuel and ignition yet, but it's very responsive off boost also. My car is cable throttle, but he has done something different to the previous mapper in that area. Driving in traffic feels easier now. I used to get a small jolt coming off the throttle when crawling, this has disapeared.
As for traction, I can only talk of dry conditions so far. Basically it hooks up fine. 1st gear is over in a blink, 2nd gear is a bit of an animal but essentially fine and manegable. The way the boost builds and the revs it occurs allows the tyres to grip and off you go. If you are silly it will spin, but I was pleasantly surprised at how easy it is to get away. Wet weather....well we'll see. Overall its easier to drive than my k03s was away from a standstill. Bonus!
Another aspect I enjoy is the transient boost in 5th at around 80mph (on a private road). Overtaking is truely effortless now. Boost increases so quickly (apparently a characteristic of roller bearings). Net result is a nice shove in the back and a quick increase in speed. Max boost seems to be about 22psi on my gauge.
One thing I spotted which I didn't expect is a slightly lumpy idle. Its nothing to write home about, but listening to the exhaust if standing behind the car you can hear the odd miss. I've contacted JBS about this. It may be a characteristic of the injectors or plugs I'm running. Not sure yet.
Pricewise I haven't gone through all my recepts, but a quick run through in my head puts the total at around £2300. I think you'll agree that this is significantly less than what you can pay for a similar setup. My initial goal was to reach 300bhp whilst keeping costs down. I think I've achieved that.
I won't brag about some of the expensive machinery I've managed to keep up with, but I just want to get across the sentiment that my car is a fast neat little package now, and I'm very happy with it.
So, thanks to me for fitting the kit
and JBS for the software.