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    Cheapest J2534 pass through device that won't brick your ECU

    What is the cheapest J2534 useable pass through device that works with all car brands that won't brick your ECU? I understand the VCX Nano has bricked a few cars, and that the OBDLink is unacceptably slow, along with many of the fake OEM units.
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    oscilloscope accessory capacitance compensation

    I got a Hantek IDSO1070A and the probes that come with it have HF probe compensation dials you adjust to get an accurate waveform. But the BNC to banana plug adapter or cable you can get to connect to breakout leads or back probe pins, etc, don't seem to have the compensation dials. Nor do the...
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    Can cooling system pressure tests push water into the cylinder?

    I was worried about doing a cooling system pressure test with cars of unknown headgasket condition because I wouldn't want to push water into the cylinder and then cause a hydrolock, bent rod, steam detonation, etc. but it occurred to me that cooling systems stay pressurized for a good, idk, say...
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    does test PSI matter in a leak down test?

    Here are the instructions for my cylinder leakage tester: It basically indicates that you can use any test PSI under 100 and looking at the table it appears that the leakage is calculated as the difference between the gauges divided by the test PSI. But I can imagine that if you have a...
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