250XB is a whole different ball game... the 250XB is a EFI engine... not a DFI as the optimax... there were never any ( how should i say this) Major issues with this motor for 01, as far as 02 goes... im not sure if they're even in production anymore, we have yet to recieve any pricing on Mercury racing (250XB and 300 Promax) products for the 02 Model Year, The updates kits for Optimax were released today, and should be out in the field shortly, ( we have 3 on order) they consist of a ECU, thermostats, and a port fuel rail ( due to the fact that the fuel presure regulator screen was restricting fuel flow. Hope this helps anyone wondering about the Opti's or the 3.0L EFI's