Uninstalled hydra 2.5 replaced with mspnp and no cranking
 

Hello all, I just uninstalled my hydra 2.5 and replaced with a megasquirt PNP in my 2000 NB. Now the car wont crank over, I can hear the starter relay kick and the ecu is powered and I can connect to it in tuner studio. Any Ideas?

Since you're running PNP, try swapping the Hydra back in. Did you do a simple swap of the ECU, or was there additional electrical work done at the same time? I would think the starter would run regardless of ECU, I believe the NB was still a "dumb" circuit for the starter.