I got a friend with a 90 teg ls that just swapped in a JDM B16 motor. When we plug the pr3 ecu in, the car doesn't start. If we plug in the LS ecu it cranks right over. So i figured something must be wrong with the ecu. So i try the ecu in another car. Another friend of mine has a 89 crx with a jdm b16 swap, so we plug the pr3 ecu into his car and it starts right up. Now i just lost because i have no clue what could be wrong. Anyone have any insight on this matter.

 

PM the user Katman, he's the ECU guru here. Sorry I couldn't help.