Thread: MFI pumps
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Avery Avery is offline
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Join Date: Nov 2001
Location: San Francisco Bay Area
Posts: 878
I built a similiar engine a few years ago and had the question regarding the MFI T pump fitness for E use. So, I went to Gus at pacific fuel injection. He happened to have an E pump that he was calibrating at the time. His test rig provides a monitor that compares each injector flow rate vs RPM and a "target" flow rate for a given pump calibation. He showed me how that T pump calibration and E pump calibration flow curves were that same up until 4500 RPM when the T pump flow rate fell off and the E pump kept rising. He went on to say that the T pump will work but you might want to run the pump a little rich under 4000 to compensate for the fall off at higher RPM's. Your basically moving the whole flow curve up by running the pump a little rich. The results? The engine ran great.
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Old 05-30-2005, 07:39 PM
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