180 - 225 engine component differences

:confused: Hello everyone! Also new to the board. Have a 2000 180hp coupe and the tech at the dealer was unable (or unwilling ) to tell me the specific differences between my engine and the 225 in the car they lent me while they fixed mine. I'm fairly mechanical, so dual intercoolers, a larger turbo, and dual exhaust are quite obvious. Does the 225 model have different injectors? ECU tweaks? massive boost pressure? different intake manifold? The engines share the same bore & stroke, the same 5 valves per cylinder and only a slight difference in compression ratio (180 has 9.5 to 1 vs 9.0 to 1 for the 225) I would like to start tuning this car to crank up the hp and torque and am looking for some sort of route map/point of reference info. Any help would be very much appreciated!!

the 225 has the dual intercoolers, bigger turbo, different tune and more boost. the horsepower gain is mainly from boost increase.