Hi, I am a professional engine builder looking to adjust fuel and ignition curves for 98-05 Land Rover Discovery II 4.0 and 4.6 engines running Bosch engine management. The cars are all USA spec with automatic transmissions. I intend to increase displacement and would like to tune the engine appropriately. Is this something there is a specific product available for? or could you recommend someone who could help me? The ECU part number is 0261204895. Thank you.