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Old 02-21-2015, 10:26 PM
Bill USN-1 Bill USN-1 is offline
258 I6
 
Join Date: Nov 11, 2006
Location: Oak Harbor, Wa
Posts: 360
The O2 sensor should be as close to the manifold as possible. The sensor needs to reach 600* for the system to go into closed loop.
If you have headers then use a 3 wire o2 and put it in the collector of one header. The 3 wire has a heater built in and gets the sensor up to temp quicker.
At no time should you move the sensor further away from the engine nor is there a reason to monitor all cylinders by putting it past the Y pipe.
The extra distance will cause problems due to the delay in signal from the sensor to the engine exhaust output.

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Bill USN-1
Fuel Injection Moderator at BinderPlanet
Hamilton Fuel Injection
75 scout XLC 345/727/JPD300/3.73's/33's/4wdisc/hydroboost/EFI/OBA/OBW
1977 Innocenti 1001 (Italian Mini)EFI 1275/DIS
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