... by immediately hopping up my new daily, the XJR!
It occured to me that I couldn't possibly own an entirely stock vehicle, so I have abused my freshly serviced Jag by replacing the crankshaft pulley with a slightly larger one:
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&rd=1&item=150060833883which effectively overclocks the supercharger with extra boost. I've done soem research and it seems to be very common mod for the XJR 6, with the ECU coping with the extra boost due to its MAF sensor.
Simply whipped out the radiator fans, untensioned the pulleys and removed the stock pulley and replaced. It definitely made a difference, so now I can pimp arounf sarf Larndan if my 350bhp living room.
You know it makes sense!
P.S. I also got round to painting the new dash for the truck, so I made some progress there too