I had my 150 remapped by a Revo dealer on Friday

The car is completely standard and the improvement is massive! Get more torque low down, so don't have to drop gears so much on the motorway. It was quite happily pulling from 40 in 6th. I've not yet had a chance to properly test standing acceleration yet, but will this week

Cost me £399 + vat, think its the same everywhere you go. Took about 25 mins, then went out for a test drive. The engineer said it sounded like it was pulling a bit too much air in, but when he stuck his head under the bonnet all looked fine.
Apparently the after a remap the ECU is reset as if it hasn't been driven yet, so after about 5hrs drive time there should be a slight improvement as the ECU 'learns' your driving style.
I wanna get it on a rolling road to see how many ponies I'm actually getting, another engineer had done his standard 150 and got 192bhp.
Can anyone recommend a decent roller in the Reading area?