AstinaGT Forums - View Single Post - ABOUT: FSE Boost Valves/Malpassi Fuel Pressure regulators

globalautomotive · 03-08-2003, 07:47 PM

Dave thats a good bit of information you have supplied their mate. It shows a real comparison between standard and RR FPR's. I refer to start pressure near the 30psi mark and the figure for vacuum off (40-45psi).

The fuel pump for your car would have a fuel pressure of about 70-80psi, and the fuel reg's max fuel pressure is 40-45psi. The start pressure is approx 30psi giving approx 15psi variation in pressure between full vacuum and nill vacuum. This supports my comments related to the 'inability of factory regs to rise,' leaving the poor old injectors to take care of business. In those higher revs, it gets increasingly harder for the injectors supply the demand.

The malpassi will rise almost to the max capacity of the fuel pump if required to, never risking a lean out problem.

Regards,
Adam

03-08-2003, 07:47 PM	#33
globalautomotive Junior Member Join Date: Jul 2003 Location: Melbourne Posts: 14	Dave thats a good bit of information you have supplied their mate. It shows a real comparison between standard and RR FPR's. I refer to start pressure near the 30psi mark and the figure for vacuum off (40-45psi). The fuel pump for your car would have a fuel pressure of about 70-80psi, and the fuel reg's max fuel pressure is 40-45psi. The start pressure is approx 30psi giving approx 15psi variation in pressure between full vacuum and nill vacuum. This supports my comments related to the 'inability of factory regs to rise,' leaving the poor old injectors to take care of business. In those higher revs, it gets increasingly harder for the injectors supply the demand. The malpassi will rise almost to the max capacity of the fuel pump if required to, never risking a lean out problem. Regards, Adam __________________ Adam Dalton Globalautomotive.com.au FSE - Fuel Systems Enterprises.