having read numerous articles about upgrading the K and wrestled with the costs and implications of extracting more power I am looking for advice I have read and re-read the "my cats been scalded" topic and having just returned from k-maps after an hour blast along the M40 with aero this afternoon, am left wondering why an Emerald ECU is required to liberate more power when the standard ECU can be remapped up to 200bhp according to Mark. im getting out of my depth technically here, but Mark said if you want roller barrels and more than 200bhp you would need the Emerald, but a VHPD spec engine with throttle bodies and cams can and has been run from the standard ECU and he has the maps available So my question is, up to 200bhp can I save several hundred pounds and not go Emerald? thank you PS the remap is superb, noticeable improvement in strength through the gears, smoother acceleration and the engine feels as though it's been unshackled.