According to WIKI:
In 2005, an additional upgrade was launched that increased power even more, to 210 bhp (160 kW), by installing uprated injectors and again remapping the ECU.

I am taking ownership of my "new" 2005 MCS works car mid next week. I haven't seen the car in anything but pictures, so my question is can you tell if the injectors have been upgraded?

 

The John Cooper Works (JCW) fuel injectors have a blue top. Look at where the electrical wires connect to the injector body and you should see blue injector body instead of the stock white body.

 

The 210 JCW engine package includes:
Upgraded Supercharger (12% pulley)
Ported Cylinder Head
380cc Fuel Injectors
Colder Range Spark Plugs
Cold Air Intake
Cat-Back Exhaust
ECU Reprogramming

Other JCW options that your car could have are the JCW suspension (shorter springs and matched shocks) and JCW Brakes (larger rotor and caliper). The JCW springs are red. The JCW brake calipers are red.

 

Thanks for the info guys, now I just have to wait for delivery!