Originally Posted by smalone01

Like the other post said, it is possible. We just added keyless-go to a Mercedes last week. You would have to buy a lot of expensive parts though. Usually each door or side has a antenna, new door handles, interior antenna by dash, interior antenna in hatch, the actual module it self, A LOT of programming with the factory scanner, and maybe a new key switch. Not sure how it works on Porsche but I would think that would also be necessary. The big unknown on Porsche is how the cars are wired from the factory, meaning each antenna, module, switch, etc would have to have a factory harness hidden somewhere in those spots. The Mercedes had most of them with a few small ones having to be added.

Originally Posted by smalone01

He was able to find one in a salvage yard and buy all the parts needed minus the keys for $1200 I think.... I dont remember labor, but the car had to be gutted and I mean GUTTED! Everything but the headliner and parts of the dash were removed. It was a fun install! Different and challenging but works great!! Would never know it's not factory.