funkyrimpler

ive had my MY99 for the best part of 3 months and am lovin it...its had some work already done, alloys, rebuild, induction kit, pipe, brakes, RB5 interior etc...now im fitting a set of prosports gauges, fresh discs/pads etc and looking at some nice 18"s.. but now im getting a bit itchy about some more, reliable power. The car is a UK AWD 2000, not sure what the power is as ive not rolling roaded it, anyway, my question..Whats the best and most economical way of getting some power from the car without spending daft money, sacrificing reliabilty or dropping to about 9mpg?? I was thinking about a possible remap as a starting point? Any thoughts?