Coincidentally I've been thinking about engine mods same as hungdynasty and also need details about the cam that's used in the JDM spec Minis. I'm under the impression that the ecu in my '98 JDM Cooper is specific to the model with it being distributorless SPi with air-con, but I don't have the knowledge to work out what that means relating to the cam - my assumption is that the JDM will run wasted-spark therefore won't need a cam-phase sensor?
I'm also led to believe that the ecu will be self learning and will be fine coping up to about 85bhp?
The only JDM specific upgrade kit I can find is the Minisport Cooper kit specifically designed for the Japanese cars and there's a lot of stuff in the kit that's not needed, plus it's priced at a healthy premium. I'd prefer if it's possible to have the headed ported and fit high lift roller rockers and an appropriate cam, the cam's the bit that it's hard to work out the required specification!