I am taking the plunge and getting a Katana installed so my Lotus Sport ECU is no longer needed. The ECU will fit an 06-07 Elise or NA Exige. The ECU changes the cam switch point and optimizes the car for track usage (switch point revised to 5750 rpm from 6200 rpm). This allows you to maintain the use of the high-lift cams during track driving, while avoiding unwanted switches to low-lift cams.
All other functionality of the original ECU program is retained, this upgrade is 50 state legal (Air Resources Board E.O. D-616). This upgrade does not affect any remaining manufacturer warranty. I need your stock ECU and $650. This swap needs to take place this week, PM me with questions.