i went to their web site and didn't find anything that really relates to off the line acceleration.
One thing I did find is the
JCW Cooper has a considerable increase in low end torque.
is there anyone out there with a header or induction kit that is aware of their power increase? If there is a dyno chart available for your aftermarket bit, I could graphically assess the power difference in relation to the feel of the car.
http://cairns.mistral.co.uk/cgi-bin/...coop_chart.htm