retrofit pcm in my 996 c4s my o2

[996turbotim]

hi there, recently bought a 2002 c4s with bose upgrade and cdr32 headunit.

am i able to upgrade/retrofit sat nav, i have been told i can but can only use one type of pcm unit and pcm2 unit wont work in 02 year cars. have found instructions how to retro fit in 03 cars with most, on this site, but could do with pcm part numbers and a bit of info on the subject, can anybody help please,

regards Tim.

[996turbotim]

thanks for your comments, or lack of should i say.

[Loren]

MY02 is kind of unique as it is the last year of the non-MOST systems.

You can install a factory PCM 2 but not PCM 2.1 (or newer) Nav system.

[RJN]

There is a difference in MY02 cars and 2002 purchased cars. Model year 2002 were produced until end of July 2002. A couple of Model year 2003 cars were produced in the last run before the shut down in August 2002. Then in late August 2002, the transition was made to Model Year 2003 cars which include the MOST bus and would take a PCM2 which you have seen the instructions for on the site. Easiest way to check is if you have the multi colour in RPM display which is a higher definition display with options for radio station, OBC etc. that is MY 03. So you may have a MY03 car, even though it was first sold in 2002. If you do, then PCM 2 is the way to go for a factory look. If you have a 2002 MY01 car, sorry that would be PCM 1 which is not that good, and has only very out of date mapping and not worth installing, in that case, go for an aftermarket system. Hope that helps!