Guys, I've tried almost everything. After the car cranks and you let it idle it drive it, after it gets to operating temp it sputters, loses power, misses, and shuts off. Weve changed every sensor under the hood that we could find. Name it and I've changed it. Even crank shaft and o2 (this one only has 1 o2). New fuel pump (but old fuel pressure regulator) I am so god dawg tired of putting money into this truck I payed 500 for ?? like idk what else it could be. Only thing left to try is fuel pressure regulator and cat converter but what I wanna know is could those even affect it?? What am I missing to try before I delve into these last 2 complicated things?? Btw no engine light codes.