i have a question about changing a large fuel rail,if i change a fuel rail did i need to change the Fuel Pressure Regulator too or i can just change the fuel rail only ,right now i using 1000cc injector ,because some people told me when u change the fuel rail u need to change the fuel regulator ,but some said u can use stock Fuel Pressure Regulator.

 

you can just change the fuel rail only.since you have 1000cc injectors going in a fpr isn't a bad idea either to have if you want one