Wideband Power?

Ina 1.8T conversion does the wideband sensor need power at all times? Even after it's been used for tuning?

What kind of wideband?

Sorry bit more info.
Innovate LM1 wideband oxygen sensor.  The main plug seems to connect to a lead which fits into the back of the handheld module.  Once this is set up does a power feed need to go into the oxygen sensor as for it's heater element?
This is all over my head to be honest - I thought the Megasquirt ran closed loop so once the map has been created the Lamdba sensor was almost not needed.

Closed loop control means it monitors the mixture (lambda) from the wideband (or narrowband) and adjusts the fuelling to suit. So if you're genuinely running in closed loop, you need to retain the lambda probe. Typically for this setup you'd use something like an Innovate LC-1, which is an 'interface' between the lambda probe itself and the Megasquirt ECU. (The Megasquirt doesn't allow direct connection of a lambda probe).

If you've created a map and its running fine and you aren't using closed loop control, then by all means you can remove the lambda probe, etc.

If you're using an LM-1 its an external box which is a lambda interface (can supply an output to Megasquirt if needs be) and data logger (as well as the lambda, can be fed with (5) more inputs but this needs another box, typically LHM-3 or something.

So if you're using the LM-1 merely to monitor the lambda, and its not linked to the Megasquirt ECU, and you've tweaked your map so the fuelling is good, then you can now disconnect it with no worries.

The problem however, is that the lambda probe is left in the exhaust system - where did you fit this? Tailpipe attachment or in the manifold? If its on the tailpipe then remove it too, if its in the manifold then possibly, it could be left. The problem is that if you leave it, and it gets cold, but then gets a gas flow past it, it can weaken the element.

Thanks Paul, that explains it perfectly.  I think I will use the LM1 to set up and then remove all of it (the probe is in the manifold downpipe) and I will place a bung in the manifold.
Thanks again.

paul_c said

Closed loop control means it monitors the mixture (lambda) from the wideband (or narrowband) and adjusts the fuelling to suit. So if you're genuinely running in closed loop, you need to retain the lambda probe. Typically for this setup you'd use something like an Innovate LC-1, which is an 'interface' between the lambda probe itself and the Megasquirt ECU. (The Megasquirt doesn't allow direct connection of a lambda probe).

If you've created a map and its running fine and you aren't using closed loop control, then by all means you can remove the lambda probe, etc.

If you're using an LM-1 its an external box which is a lambda interface (can supply an output to Megasquirt if needs be) and data logger (as well as the lambda, can be fed with (5) more inputs but this needs another box, typically LHM-3 or something.

So if you're using the LM-1 merely to monitor the lambda, and its not linked to the Megasquirt ECU, and you've tweaked your map so the fuelling is good, then you can now disconnect it with no worries.

The problem however, is that the lambda probe is left in the exhaust system - where did you fit this? Tailpipe attachment or in the manifold? If its on the tailpipe then remove it too, if its in the manifold then possibly, it could be left. The problem is that if you leave it, and it gets cold, but then gets a gas flow past it, it can weaken the element.

bump!

It's about last week when my uncle mentioned about having trouble with the wideband oxygen sensor and he is really getting frustrated about it. He ask me if I know about it but to be honest I don't have a clue what is that. So I tried searching the net for it and lucky to find this post with really reliable information which might be useful for my uncle. Anyway, thanks for sharing this information.  

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Power and speed is inseparable. . .
2010 Volkswagen Beetle Oxygen Sensor