+1 plug for the scan gauge. Best multi sys ?gauge by far. I have an older version that isn’t EV specific that works just fine w my 4-cyl 1.9l TDI and it does not have an “alert” function: ie it’s up to you the user/driver to be monitoring fastidiously to catch any aberrations that may be consequential. Maybe the newer versions that Ron carries does??
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Justin
2000 EVW 1.9TDI Syncro 5-spd
505k mi :-)