The John Cooper Work tuning kit (JCW) wasn't a simple upgrade on the last-generation Mini Cooper S: it was labor-intensive to install and included expensive items like a new supercharger and cylinder head.
The JCW kit for the new, turbocharged Cooper S is much simpler. For $2100 plus installation costs - around $200 at your local Mini dealer - horsepower takes a modest jump from 172 hp to 189. Maximum torque is also bumped slightly - from 177 lb-ft to 200 lb-ft. These increases are the result of a redesigned air box and high flow air filter, a low-restriction exhaust system, and a reprogrammed ECU.
We're excited to try a Mini fitted with the JCW kit and plan to add it to our Four Seasons Mini Cooper S in the coming months. But most of us around here feel that $2000 is a lot to pay for 17 hp.
Some performance numbers from Mini:
|Test||Cooper S||JCW Kit|
|0-60 mph||6.5 sec||6.5 sec|
|50-75 mph, 4th gear||6.4 sec||5.3 sec|
|50-75 mph, 5th gear||6.7 sec||6.3 sec|
|50-75 mph, 6th gear||8.9 sec||7.6 sec|