I decided that after the free trial I couldn't live without it. After the first hour or two, once the thing had a chance to fully "adapt", I am totally delighted. Everything is better including, believe it or not, the fuel economy.....which I really don't understand. I had it done by Sean at Big Boys Toys in Thurrock who was very helpfull, honest and genuinely enthusiastic. I may finally have laid the ghost of the old Alfa to rest! Don't forget that mine is an auto so the power is constant from 1200 to 6000 rpm as there is no rest between gear changes. It really is quite exhilerating. Just thought you might all like to know.