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...
very cool. Sounds like moving to 10psi should be a fairly inexpensive upgrade for me then. 500rwhp sounds like a good target