Alarm question
 

I was reinstalling a anti theft module and I forgot to put de fuse and the car could start. This is normal? If the module is not working how is possible to start the car?

Yeah that's normal

Typically the stock alarm is separated from the immobilizer (cut engine fuel), located as standalone or built into the body module. The immobilizer is built into the ECU, the DME.

From what you described, these boxster have standalone alarm unit. This does not affect the engine.