06-22-2016, 05:48 PM
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#32
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Senior Member
Join Date: Dec 2015
Drives: Full race 4cyl boxer
Location: CO, USA
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Quote:
Originally Posted by nelsmar
If it is in fact 100% DI then raising your fuel pressure is going to do absolutely nothing unless you magically have a fuel source that is above 20MPa (200bar). Considering the DI pump pressurizes the system to ~20MPa in factory form for most of the power band.
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 , great minds :-)
Quote:
Originally Posted by justatroll
Stupid question BUT:
Since the engine runs mostly on DI, and the DI fuel pump is downstream of the electric fuel pump (and has its OWN control loop for duty cycle) - WHY does fuel pressure from the electric FP in any way affect the pressure to the DI system?
(assuming the HP is not soo big that the system is starving overall)
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