bob brigham (the mechanic) and i installed westach kit in 18y went real well (16 manhours}( http://www.westach.com/linkspage.htm)
it consists of one dual guage with two 4 way switches to separate out the cylinders
started the engine and the guage started reading next we set the mixture
based on the exhaust gas temp .that wil save a few bucks.(we are paying
$3.25 a gal) and probably a stuck valve.
cht/egt
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