Need some opinions. My mustang has no accleration/hesitates from a stop. Even if i floor it, it doesn go anywere and the rpms go down and then back up. Once it goes past a certain rpm's it takes off but still feels like it has no power.

There is no check engine light on

Fuel filter has been replaced. Also just got a 255lph fuel pump installed.

 

Did this happen right after the fuel pump install?

 

no but has improved since the fuel pump was installed...

fuel pump was going out

 

You should install a Toyota gas pedal

 

lol

 

also would anybody know whats the fuel pressure is suppose to be at?