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Thread: Fuel controller
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05-12-2020 #4
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- Nov 2006
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- Mountain Springs, Texas
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That is not quite correct. A pwm controller regulates pressure by varying the duty cycle of the pump voltage. In most applications the pressure is constant, 58-60 psi for most NA LS applications. The GMPP LSA ECM is a little different where the pressure is boost referenced if I understand it correctly. Boost referenced means the fuel pressure varies with boost level as specified by GMPP.
In my LSA the Speartech ECM does not require boost referenced fuel pressure, it uses a fixed 60 psi and that is what my vaporworx controller is set for.
Hopefully Carl will step in and correct me as needed.
Don
1969 Camaro - LSA 6L90E AME sub/IRS
1957 Buick Estate Wagon
1959 El Camino - Ironworks frame
1956 Cameo - full C5 suspension/drivetrain
1959 Apache Fleetside
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