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wideband o2 sensor & unichip 

 

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 Post subject: wideband o2 sensor & unichip
Posted: Tue Jan 30, 2007 1:06 pm 
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hey all

am getting a wideband oxy sensor (bosch) one off a mate - my question is, do i have to retain the stock oxy sensor as well for the ECU (will be running a unichip) or can i replace the std with the wideband? i have the extractors off the car at the moment so could perhaps take them to an exhaust shop & have a 2nd thread inserted in them to run both sensors? (will be running an A/F gauge as well)

cheers :)

 

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Posted: Tue Jan 30, 2007 1:14 pm 
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What controller is the bosch sensor hooked up to? If it has NB output you just wire that back into the factory loom for the unichip/ecu.

 

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Posted: Tue Jan 30, 2007 1:20 pm 
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sensor has no controller, was hoping i could run it to A/F gauge to keep an eye on things, but unsure if unichip would require/tune better with it as well.

excuse the ignorance, have been reading up on the sensors, just trying to get an understanding of my exact situation!

 

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Posted: Tue Jan 30, 2007 1:28 pm 
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Yeah a wideband needs a controller to.... well... control it lol.

The wideband is a very different beast to the narrow, as im sure you've been made aware of in your readings. A key difference is that a wideband wont plug straight into an ECU (unless the ECU has inbuilt wideband controller)... it needs a controller to interpret the output and generate something useable.

Sensor ----> Controller ------> display/ECU

Wideband o2 output is very different to narrowband - again, prob something you've read about. But some wideband controllers will "simulate" narrowband output - so you can plug it into your ECU and not have to run dual o2 sensors.

 

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Posted: Tue Jan 30, 2007 1:36 pm 
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will the gauge need a controller? its an autometer one, haven't got specs on me though :?

i'm doubtful the unichip has any such capacity, so realistically was just to keep an eye on things more so at this stage

 

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Posted: Tue Jan 30, 2007 1:39 pm 
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The sensor needs the controller - it wont work without it.

 

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Posted: Tue Jan 30, 2007 1:42 pm 
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stockstandard wrote:
The sensor needs the controller - it wont work without it.


no worries - will find out what sensor # & take things from there :)

 

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Posted: Tue Jan 30, 2007 1:46 pm 
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you probably know already, but the wideband sensors are cheap - often cheaper than narrowband. The controllers are expensive, ranging from ~$300 to ~$700 and beyond.

 

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Posted: Tue Jan 30, 2007 1:49 pm 
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yeah the sensor was an offer from a mate if i was keen, i couldn't see any harm in picking it up in the meantime, until i get a better ECU - was looking @ seeing if it could be used, at least to some degree, for the moment!

 

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Posted: Tue Jan 30, 2007 2:04 pm 
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I think it was the Megasqurit crew?? Who did a similar fashioned wideband controller... i.e. build it yourself.

If you're keen to take on (another) project?

 

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Posted: Tue Jan 30, 2007 9:46 pm 
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if all the controler is doing is turning the signal back to a narrowband, whats the point? the ecu will still only understand what it was programed to read

 

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Posted: Tue Jan 30, 2007 9:49 pm 
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fiftyone wrote:
if all the controler is doing is turning the signal back to a narrowband, whats the point? the ecu will still only understand what it was programed to read


It will be outputting the wideband signal to the gauge on the dash though.

Also the NB output of a wideband is more useful than a raw narrowband signal as it is much more stable.

 

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