I know my situation is a little different than yours because mine came with remote locks but this is my situation and relates to yours in a way I think. I just bought the ikey from DigitalGuardDawg online. It is a combination of their kit and a button I had custom made by a forum member on 6speedonline. Essentially the way the kit works is you keep the credit card sized RFID in your wallet and when you approach the car the doors automatically unlock, you get in and push the starter button (located where the wiper button is for some peoples models) and then drive off. The only problem is there is no one in my city (that I've found) that will install the kit in my 01 non-s. I have to drive 300 km's (~190 miles) to get it installed by someone that DigitalGuardDawg referred me too.
My suggestion to safe yourself a headache in the future is call around to installers first and make sure there is someone that will do it. All the installers I talked to in my area say that the immobolizer and security system are so tied together into the ECU that installing this kit isn't worth the trouble/time/money and they won't touch it. A lot of the ones I talked to haven't installed on many Porsches before so I think that the unfamiliarity has a lot to do with it as well. I'm not trying to discourage you fronm your purchase at all, just saying that calling around to installers now and not making the same mistake as me can save you time and money in the long run. Hope this helped
