aight so I fixed the fuel pump and the car doesnt shut off on me anymore, but IT HAS NO POWER!!!!!!!!!!!! it boggle's all the way to 3500rpm,and that so happens to be the redline--- it taqkes forwever jus to get up to speed -- there's no misfire at all-- when it starts up it runs fine-- but as i accelerate it feels like itr starts to misfire??? i Need help.......... please

 

Since the fuel pump is new, I think that you should test the pressure at the rail. You can also test the fuel pressure regulator while doing this.