Good Luck!
It's always exciting when you first fire it up. Make sure you get your IAC (idle air controller) counts below 10. You do this by adjusting the front screw on the throttle body (when the engine is at operating temperature). This is nothing more than the same adjustment you have on a carb. If your IAC counts are high turn the adjustment in, this will open the throttle plates causing the IAC counts to come down. This adjustment can be very touchy so go SLOWLY. After adjusting turn the car off and wait for the numbers on the display to disappear. Turn the ignition on and before you start it make sure that your TPS (throttle position sensor) reads zero.Start the engine and allow the IAC counts to settle, if still not between 4 and 10 continue adjustment. It might be helpful to configure you large gauge display to show IAC, TPS Temp and RPM so you don't have to go searching for them. Got my fingers crossed for you.
Helpful hint, if you're displaying the TPS on the large gauge display, adjust the screw until you see a 1% change on the TPS then shut down the engine and recheck after the display goes blank.
