I'm talking CIS here.
If you put a weaker flowing pump in series then it will choke the 044 unless you use a surge tank and have the weaker pump in series before the 044. A weaker pump downstream will not increase pressure; it will free-wheel with the higher flow 044 pressing against it while slightly increasing the work the 044 handles.
Now, if you put a 044 in series with a weaker rear pump and no surge tank then you'll be straining the 044. This will present as heat fatigue; when the pump gets hot the engine will show as lean mixture or hot start issue with fuel boiling in the pump body.
The pressure / flow make of the 044 are excellent relative to other pumps available. If I were building a serious 911 I would use the Integrated Engineering dual 044 surge setup. Run a stock rear pump to fill the surge/pump bath and relay the pumps with 10g wire directly to the battery.
http://www.intengineering.com/integrated-engineering-submerged-dual-044-billet-surge-tank-with-pumps
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“Of the value traps, the most widespread and pernicious is value rigidity. This is an inability to revalue what one sees because of commitment to previous values. In motorcycle maintenance, you MUST rediscover what you do as you go. Rigid values makes this impossible.”
― Robert M. Pirsig, Zen and the Art of Motorcycle Maintenance: An Inquiry Into Values
Last edited by Lapkritis; 09-20-2013 at 07:41 AM..
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