Hi John, I'm also going with Chas since he has already done conversions for the 'Zetec' and is in the 'Development' stage on Super - Chargers/Turbos for the 'Duratec' powered units.

Previously, I wouldn't have considered a 'Turbo' because of past experience with them, but was talked into trying a Volvo S40 T5. After two years of using it, I have changed my opinion of the latest generation of Turbos.

What was the main benefit you reckon you achieved on the 4/4 with the Super Chip Up - grade?