Has anyone used this company SOS Diagnostics?

[Chuck W.]

Same here, I can't help you with your question. But, I agree with pariclewave.

qualityporscheparts is a great vendor and has a number of these sets for sale;

Boxster S RWD Porsche 986 IMMOBILISER SET ENGINE COMPUTER KEY IGNITION | eBay

[itsnotanova]

I believe if you had a good M535 immobilizer, and the chip in your immobilizer was good. You can solder your chip into the good immobilizer. I'm not good at soldering, so I can't say I've done that method. It's a lot easier and maybe even cheaper swapping out the ignition cylinder, door cylinder, immobilizer and ECU/DME. Only takes 30 minutes and that's mostly replacing the door lock cylinder. Qualityporscheparts is selling a part in his set (996.618.159.01) that doesn't need to be replaced. There's no need to replace that part. All you need to replace is the ignition cylinder and all you need is a paperclip to do that. I would suggest that you find a set that matches your car's year and transmission. You'll need to find a 97-99 set. I might be wrong about the transmission though. I've never checked to see how well a ECU/DME from an auto works on a manual or vice versa.

[joecal]

Thanks itsnotanova, but my immobilizer isn't functioning and needs to be replaced. It sounds like this company SOS can program a new board to accept my existing key as you mentioned. I'd rather do that so the key remains original to the car. This way if there's a problem with it in the future and I need a new key made it's registered to my vin#. I've read that if it's not they won't cut you a new key. I was told my circuit board is not repairable in the immobilzer and needs to be replaced, this company says they can program it to accept my key. That's good to know about the ignition switch removal, I thought it would be a lot of work replacing. I'm going to call this company tomorrow and see what they say. They charge $495.00 which is the cheapest I've seen so far, another company on ebay wants $775.00 for the same service.