Quote:
Originally Posted by ecoli
With your Fullblown setups on the 8/9s we were always fine having the second pump come on at even higher boost levels like 15-20+ PSI
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In that case the assumption is that the progressive pump back-flows more than a second GSS342 would. Whether progressive or Hobbs, the second pump would not be running under vacuum.
Converting my setup to a Hobbs switch would just require swapping the other 342 in as the second pump and obtaining a Hobbs switch. All the wiring is already there in the glovebox for hooking it up.
I'll be waiting to hear from you before I try something else. I could disable the second pump and try running it as a single pump. That would isolate the rest of the fuel system setup.