Hi so I own a 2004 Chrysler crossfire and I have it engine swapped 3.7 liter. It’s in the same class but besides that when I was driving I was giving the car some gas and all of a sudden the Bas/esp light comes on and my engine stops. It wouldn’t let me use the gas pedal so I had to turn it off and turn it back on. Can someone help me I can’t find anything ok this.

 

There are people here who would like to be helpful, BUT with the 3.7 engine in there all bets are off. You might try getting the car to a tuner shop with a dyno, MAYBE they could get you running, The little info we have with your post is worthless. What have you done to the PCM to adjust for fuel trim? What MAF sensor are you using? Are your tire sizes stock? etc, etc...
We have no idea what is going on. Can you get any DTC read?? Your best bet is find a tuner that is willing to work with you. Good Luck.