O2 Sensor Location

[rtr1]

In a single turbo application, is it better to put the O2 sensor before or after the turbo? Or is it normal to run 2 sensors at both locations??:confused:

[Injected65]

O2 readings will change with pressure, so most people I know will run them after the turbo. I have heard mention of guys running them before the turbo but needing to recalculate the output to account for the backpressure.

Chris

[64duece]

The sensor life is abit better in the downpipe as it's not overheated as much. I usually like 12-15" back from the turbine.

[Robert1320]

Also make sure you have some distance from the O2 to the end of the pipe.
You may get reversion and show lean if the pipe is too short.

[badnover]

robert how close is too close to the end of the down pipe??

[tt69camaro]

I tried about 8" back from the exit and it did not work. I'd say more than 12" as a guess?

[25-5]

Also make sure you have some distance from the O2 to the end of the pipe.
You may get reversion and show lean if the pipe is too short.

I did that at first. Then made the pipe longer.

[Robert1320]

robert how close is too close to the end of the down pipe??


You may need 18" depend on the exhaust.