Of course JW was faster with a best of 48.24.
The most surprising thing was how effective the Racing Beat exhaust was - the PP was probably no noisier than my Bridgeport with the old exhaust system - but the note was so much deeper and less tinny. And before the anoraks comment - yes, I ordered the system with extractors for a standard 13B for my engine, but the PP was fitted with RB extractors for a PP that JW had.
Some in car footage from my fastest run.
So much fun!