o2 sensor wrap
Does anyone know EXACTLY how to do this modification to get mpg gains? It sounds a little sketchy. I tried just wantonly wrapping the O2 sensor in a bunch of tin foil and got like 18 mpg compared to the usual 24-28 mpg. Do you need to wrap the sensor tip? Any help would be much appreciated.
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Best fill up so far is now 29 MPG!
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