B20_ej1

Ok I have a b20 swap in my eg. Before it was throwing a code 9 (cylinder sensor) so I replaced the dizzy with a working one. Before i replaced the dizzy when I started the car and pressed on the gas to go it would hesitate and be really hard to push the gas pedal and when I was stopped the car would idle really low and almost die. Now after changing the dizzy (no more code) the car runs fine until it heats up than it does the same thing, hesitates when giving it gas ( goes to 2k rpm than hard to press gas pedal) and almost dies when stopped. What could this problem be guys? Plz help me out. Thnx