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  • Users: LKV
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  1. LKV

    Engine vacuum gauge test

    I've tested VW Jetta engine with vacuum gauge. Here are results: idle needle fluctuates fast between 15-16 in.Hg at 2000rpm - 20.5in.Hg steady at 3000rpm - 20.5in.Hg steady released throttle from 3000rpm - needle jumps to 22in.Hg then returned to 15 in.Hg (idle). Quick open/close throttle -...
  2. LKV

    Oxygen sensing

    Hello friends! I've got freeze frame data from ECU Porsche 996T. Here is value I can not understand. oxygen sensing: 9.3% oxygen sensing: -3.2% Would somebody, please, explain the meaning of this value. Thanks.

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