I have an AIM Pista in my car and I log all of the engine sensors and I added the LCU-One to log Lambda and EGT. The Pista dash is equipped to monitor 8 channels, but it is easy to add expansion units to add more thermocouples or sensors. I'm an AIM dealer and I specialize in Porsche so if you want to e-mail me at jandsaustin1 at verizon.net I'll be happy to help you find a solution
Lambda
AiM LCU-One Lambda Controller
Expansion modules
AiM Channel Expansion
If you are not looking for a dash, here is a more economical choice
AiM EVO4