Ok I'm at my whits end. I did a motor swap and it ran fine until I floored it one time. Now it stalls out between 1500 and 2000 rpm. Idles fine. I am guessing this is limp mode. Any suggestions would be greatly appreciated. I swapped out the throttle body with my old engine thinking it might be bad.

 

Hello and welcome to the forum! Pull the car's error codes using a scan tool. This should give you some good insight as to where the issue is coming from. Let us know if you have any other questions.