I just got my jwt ecu today. 550cc and a z32. i put it in and it took a couple of times to start up the idel was rough but after a couple of trys is evened out, went to take it for a spin but it wouldnt go past 25% thorttle. it was acting like there was a limitter. i have an safc1 but it was unpluged. what could be the problem?