static 58psi, or vaccuum referenced tuning?
02-29-2004, 06:41 PM
#1
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static 58psi, or vaccuum referenced tuning? I'm curious to hear if any of you have switched over to running a vaccuum referenced fuel pressure regulator.. It seems like it would make sense when running larger injectors, so the pulsewidth wouldn't have to be shortened quite as much at idle conditions, since the pressure at the injector would be reduced in idle conditions. I'm sure there is an ls1 edit change needed to correct the ofset.. I would welcome any input on this.
03-01-2004, 02:32 PM
#4
When I was running a stand-alone fuel system and rising rate regulator, I set my base fuel pressure to 43psi. This made sense because most injectors are rated at 43psi, and it also does not tax the pump nearly as much. With LS1 Edit, it is easy to rescale the injectors for flow and base fuel pressure.
If you are running a high boost application and start at 58psi with a rising rate regulator, then at 15psi your injectors will see 73psi, and may even lock up. But if you start at 43psi and add 15psi, you only run the injectors at 58psi with 15psi of boost.
Just much easier on the fuel system to start with a lower base fuel pressure setting.
If you are running a high boost application and start at 58psi with a rising rate regulator, then at 15psi your injectors will see 73psi, and may even lock up. But if you start at 43psi and add 15psi, you only run the injectors at 58psi with 15psi of boost.
Just much easier on the fuel system to start with a lower base fuel pressure setting.
03-02-2004, 12:10 AM
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I used to have a turbo, but no more. I still have the vaccum referenced fuel pressure regulator on the car and it runs great and it is easy to tune w/ only one entry across the IFR.