Morning All, we recently picked up an 04 MCS with the JCW kit installed. after a bit of poking around, am I correct in thinking that there is an upgrade to the basic kit that was offered in 04?

Thanks, Mac

 

The JCW Upgrade (198hp to 207hp) Kit became available in November 2004. The Kit (pn 11-12-0-395-131) includes "a redesigned air box with an electronically-controlled air induction system, a set of higher flow fuel injectors and a reprogrammed electronic control unit". Last I heard the list price was $560 and installation was 1.5 hours.

 

is there a quick or simple way of telling if I have the basic JCW kit or if the previous owner also did the upgrade?

 

The air box is easy to identify:



The larger injectors are blue but hidden:



If the Upgrade Kit was dealer installed, you should be able to call any dealer and have them confirm it using your VIN.

 

I'm looking @ picking up an 04 MCS JCW with an Alta CAI. Aside from the injectors and the ECU reprogram, what else can I do to increase engine performance?

 

install the rocket booster upgrade kit