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  1. E46 General
    I have a 99 E46 323i 5speed. ABS light and SI light is on but no SES and there are no obd2 codes stored or showing up through generic scanner. The car will run but wants to stop accelerating after about 3k RPM in any gear and does the same thing after about 1/4 throttle. If I am easy on the gas...
    323i maf testing
  2. E46 General
    It's called Volumetric Efficiency and is a measurement in percentage of the actual ability of the engine to move air versus what it could move in a perfect world. To use this test, you need a scan tool capable of recording data and a VE Calculator like this one. The calculator requires the...
    maf testing
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