Something else to consider is mounting. They want the sensor mounted at about 10* up to prevent contamination from moisture. A little copy/paste for you. Also, remember to disconnect your battery if welding on your vehicle.
A weld-in M18 X 1.5 boss is supplied for sensor installation. Mount the O2 sensor in the
exhaust system at least 18 inches downstream from the exhaust port. If you anticipate
high EGT's (over 800C), run a turbocharger, run at high RPM for extended periods of
time or plan on running leaded race fuel then you must mount the sensor at least 36
inches or more downstream of the exhaust port as all of these can cause the sensor to
overheat. On turbocharged engines the sensor must be installed after the turbo charger,
if not, the pressure differential will greatly effect the accuracy of the unit. For accurate
readings, the sensor must be mounted before catalytic converters and/or auxiliary air
pumps. To prevent collection of liquids between the sensor housing and sensor element
during the cold start phase, the installation angle should be inclined at least 10° towards
horizontal with the electrical connection upwards, see below.
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68 Firebird. IA2 block, 505 cu in, E-head, Solid roller 3650 weight. Reid TH400 4:11 gear. 29" slick.
Best so far 10.12@133 mph. 1.43 60 ft.
76 Trans am, TKX .81 o/d, 3.73 Moser rearend,
468 with KRE D-ports, Doug headers, 3" Exh.
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