The noise on the second run (about 1:45 in the vid), when the car sucks up a big gob of air & goes for it was fantastic (that run did 154bhp!) the guy stood next me actually jumped too!
The chap who did the testing pointed out that the fuelling is leaning out at a cruising speeds & an upgraded fuel regulator may improve things. My old Smart had it's regulator replaced with an Audi one I wonder If I could do the same for the Rover Maybe using something from a Rover turbo engine?