I would like to know how easy is it to swap the 02-03 ECU into the 00-01 S2K and are the gains from the 02-03 the same in the 00-01 when the ECU's have been swaped????? Please help.

 

At one time it was thought that moving to an 02 or 03 ecu provided some extra power by leaning out the mixture. However, recent dynos show that may not be true. Switching to an 02 or 03 ecu is not hard but you must have it re-programmed at the dealers to accept your keys.