Cooper S R52 and R53
The first JCW
Tuning Kit to be made available for the Cooper S was an upgrade for the Cooper S, producing a total of 200 bhp (150 kW). Released in 2002, the kit consisted of the following components:
Uprated cylinder head, gas-flowed and ported
Uprated supercharger, faster-spinning
Uprated spark plugs
Uprated exhaust system
Decorative badges, individually numbered engine plate and certificate signed by Mike Cooper
You already have the jcw
supercharger pulley, exhaust, and remapped ecu.
If you port the exhaust (and somewhat who ports heads well can do a better job than the jcw
and use the jcw
plugs, you should be right back to a full jcw
package. Maybe give a little attention to
the intake ports while you're at it.