Fuel req
I´m in 400rwhp range and installed a 255l walbro but it still sputtering at high rpms,i´m going to buy the hotwirekit but how much hp can the stock fuel lines and FPR support?
I have a new dristribuitor and compleate ignition system so it´s not the cause of the sputtering
I´m suspecting the FPR is not holding pressure,getting a gauge to measure it


Best I can offer would be trying 50psi.