I have no idea how accurate the sensor is. I also dont know how you would verify it other then taking
the temp of the coolant which would be hard to do. Is it possible? I dont know if theres a specialists tool
for that. If I had to I would take my laser thermometer and aim it to something that transfer heat easily
like the coolant hose. Would it be accurate,,,, might be close.
Also how would you compare that number to your cluster gauage, correct me if wrong the cluster gauge
doesnt have numbers. I dont know if an aftermarket sender would be compatible with the stock ecu, it might
even do more harm then good if it cant read it.
If I was worried it wasnt accurate I just replace it with new oem sensor. If you want to add more gauges like temp
and psi then add them with right adapters. They sell special adapters for coolant temps that go inline with your
coolant hose.
For your w/b the instructions will tell you how far down stream to put the bung. Volts is nice to have but not critical.
I just installed a volt gauge myself, I dont need it but it beats pulling out my voltmeter.
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