Well what a great day we all had
I have to say first of all, that Janspeed are one of the best outfits I've been to in a long time! VERY impressed. The rollers seemed bang on the money, with every car producing exactly what people expected, including standard cars making standard figures, modified cars making exactly what you'd realistically expect and the highly modified cars making the power they expected.... or more

They measure in WHP only, but have a calculation they can apply that, as far as I know, is specific to their rollers to work out BHP. It seemed bang on too, so I'm confident in the result I got.
Stewie stole the day, but I'll let him tell you about that
My car got.... 185WHP, which equates to 217BHP, which is exactly what I was expecting. It's nice to see a bigger figure, but I wanted a real life figure and I'm confident I've got that.
185WHP and 186lb/ft torque @ the wheels. They tested the car twice and both times it produced EXACTLY the same figure, the same torque curve, power curve, A/F results... everything was the same both times.
Stewie - It was a shame you left when you did, as they gave us a tour of the entire factory and workshops and showed us the difference between different sport cats Vs standard cats, the machinery they use, the stock, the cars, everything! SO impressed!
Oh, I'm going to be giving one of their senior guys a call next week with a view to them producing a LCR exhaust system. If there is enough interest (10 cars minimum) they will develop a system for our cars from scratch