I have a modified(DP,MP,Catback, Intake, FMIC,ECU) 93 automatic that I'm taking back to stock. It has a cosmo 3 rotor fuel pump currently installed. Should I leave it in or replace it with a stock unit once I have all the flow mods removed(leaving the DP in)?

Thanks

Todd

 

It will run perfectly fine as a stock car with the pump. There is no reason to swap it out unless you want more of a return on your investment.

 

Thanks Rynberg

I've heard that it can cause the car to run rich at idle.