It looks exactly the same as my stock one, just with nismo branding. No serial numbers or anything. 
  
Nismo 
Sports Resetting  
Sports Engine Control Module 
  
And thats about it. 
  
Only problem is that RS Tuning is a bit of a drive for me and I'm still not 100% convinced that they will be able to remap the ECUs as they seem to have gone a bit quiet.