Careful running just the one pump.. you *might* not be getting the appropriate fuel pressure at high loads with the one single pump, which could cause problems
They are both in series, right?
I know mine are, but mine's an aftermarket turbo setup that relies on such high pressures, which one pump would not be able to meet the demands.
'89 911 Turbo Cab
Protomotive MAP ECU, Twin Plugged Heads, GT2-EVO CAMs, 3.3L fully finned P&C's, ARP fasteners, C2T head gaskets, Titanium Retainers, Turbo spec valves, springs & guides, 964 splash valves, GT35R BB turbo, GSF Stainless Headers, Magnaflow Exhaust, Full bay Intercooler, TiAL 46mm w/gate, TiAL 50mm BOV, Apexi AVC-R EBC, SPEC Stage3+ Clutch kit, Crane CDI Ignition