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I put a Summit A/F gauge in my son's bus. Most A/F gauges will work with stock narrow band O2 sensors. The diff. between a 1 and a 3 wire sensor is that the 3 wire sensor has a 12 volt heater and the 1 wire does not (takes a little longer to start working).
I have run VDO CHT gauges on most of my cars. I looked at an Autometer CHT gauge but most are 100-300 deg. max and the senders for the spark plugs are $90 ea. The VDO is 100-600 deg. and the replacement seners are $14.
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NO_H2O
72 1302 Smack Black GL
73 Bus (2L CIS Powered)
66 Beetle, 73 Standard Beetle
72 Pinzgauer 710M
Volksport Kafer Gruppe
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