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Thread: Setting up MFI Pump on a racing car

  1. 11-29-2010, 08:28 PM #1
    ST Man
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    Setting up MFI Pump on a racing car

    Hi to all

    I have a factory 1972 2.5 MFI 911/73 engine and I am looking for some guide lines on setting up the fuel pump. It is running ok but i want to adjust the mixture more accurate.

    Leon
    911 S Targa 68 11850243
    911 S 69 #119300002 Ex Dr.F Porsche
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  2. 11-30-2010, 08:33 AM #2
    Flieger
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    There is a thread on Pelican called "MFI Pump Open Heart Surgery" started by Jeff Higgins. He and, on the later pages, Dick Lague talk about using an LM-1 or another air/fuel ratio monitor. They hooked them up to the exhaust pipe like a wide band oxygen sensor, then were able to collect data on a computer while driving to get the full range of load and rpm conditions. Then, based on that, they could turn the white/black screws or main rack or idle screws.
    1971 911S, 2.7RS spec MFI engine, suspension mods, lightened
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