[Beedub]

well, according to ESS the z4m's fuel system can't support the needed fuel for their 550 kit, so before i can do the upgrade i need to look into upgrading the fuel system..... Now this is one point of the setup i really have little to no knowledge about..... i gathered ours was the same as the m3?? but apparantly its not.....

so in order to make a more robust fueling setup.... heres what im thinking...

upgrade intank pump
upgrade injectors and fuel rail.
new FPR

as its only 50hp addition gain this should be suffice im guessing.... id like to know what the VF 570 setup adds to the fueling on the z4m??

more to the point has anyone got solid data on what we have stock in terms of pumps ect ect..... i think this will good info for all of us incidentally. looking at real oem it does seem very different to the m3.... but would it be unreasonable to expect the same capacity??? clearly not.

byron