Originally Posted by Rated M Roadster
Since all S54 motors use the same injectors in stock form, I'm assuming they use the same pumps as well (as would seem appropriate for the same injectors); with the FPR being the exception to similarities between the systems on the M3 and Z4M.
Here we go (in bold):
By the time we need to upgrade the fuel system we're going to need a head gasket and studs anyway; then you might as well build the rest...
awesome info..... the only thing is..... real oem shows a completely different fuel pump for the z4m compared to the e46..... however i agree with you that it surely must be an equivilant?? im wondering where Ess got their data that it cant supply the fuel needed..... Anyhow ;-) i'll update when they get back to me ;-)