Hi,
Yeah I got a stage 1 map from Shark Performance in the end, have done a good few thousand miles on it with no issues and the regens have reduced in frequency from the post emissions 'fix' map which is good.
Didn't get it on the rollers so not sure of exact power but on paper it should have around 135bhp and 295Nm it's certainly a bit quicker with more pull through the gears and less lag I find if you put your foot down hard it delivers the torque quite aggressively so traction off is better as it bogs down otherwise but generally if you dial the power in slowly it is fine.
I've been pretty happy with it, I was glad I got it done and it certainly doesn't feel like it's putting major stress on the motor but then I don't really drive it fast or hard to be honest and the extra power wasn't my main reason for the map.
HTH let me know if you have any questions.