[rbail1]

EDIT......WE HAVE CODES. P000A AND C1201.My son totaled his '16 FRS so we bought a salvage auction '13 FRS to repair with the usable parts from his wrecked car. The '13 was completed and he loves it.....until last weekend when we swapped in his '16 motor because of the mileage differential. He states a loss of power from the '13 engine and I concur....it's noticeable. I swapped entire engine from flywheel to intake....harness and all. I did not swap the ECU. The engine did not appear to have any mods aside from the catted header and aftermarket exhaust. After swapping his stock exhaust onto it to pass smog it was swapped back after. I assumed at the time there was no tune in the ECU or it wouldn't have passed smog????? I had a few codes for camshaft position sensor after the swap but that was investigated and found to be a broken sensor plug from the car accident. Replaced it and now the engine is free of codes. Runs fine, smooth idle. Noticeable power difference between the two engines and it now hits the rev limiter at 5500 RPM well below the red line of 7500 RPM. Both engines were manual trans. Would a tune in the '13 ECU make this drastic of a difference to the '16 engine? I was considering swapping the intake, injectors and harness over from the '13 to the '16. Thinking maybe there were possible injector upgrades??? Both engines had stock intake air boxes. I have engine knowledge but my tuning skill is zero. Any inputs or suggestions are greatly appreciated. I read that this swap was plug and play. I didn't swap the ecu because I assumed that it wasn't necessary and didn't want to hassle with coding a new VIN. Help!?!?