I am new to RB's and this has me quite confused. 
  
The car is a 95 240sx 
  
The motor is a RB25det (Stock minus freddy intake and fmic) 
  
The problem is if I set the base timing at the specified 15* the car has no power hardly at all. When I crank the CAS all the way the the left(maxed out), then the fell like what I believe the car should feel like. I have had VG30dett's in the past and I feel like I have a general idea what the RB should feel like in a 240sx and when the timing is set to 15* the car litterally is pathetic, a stock 240sx would probably be faster. 
  
I have verified crank, cam, damper to all be timed properly. 
  
Thanks 
Jeff