Where is the best place in the wiring to put a switch to shut off or disconnect the oxygen sensor when tuning?
I am using a wideband sensor with a MS1 ECU.
O2 sensor
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
Re: O2 sensor
You don't want to use a switch. You can disable O2 control in MT/ TS. There are options for NB, WB and None. You can also disable it under specific conditions such as when cold, above a certain MAP or below a certain rpm. If you were to put in a switch the ECU might continue to read garbage and screw up the controls.