[Supras] FW: Auto Trans & Oxygen Sensor Questions

[Sean Cavanaugh]

THe LC-1 also has a true digital output for connecting the sensor to a laptop thru a serial cable. this is what gives you your direct digital gauge and dataloging capabilities.

-Sean

> From: millenia2000 at hotmail.com
> To: supras at supras.com
> Date: Wed, 14 May 2008 15:23:23 -0400
> Subject: [Supras] FW: Auto Trans & Oxygen Sensor Questions
> 
> 
> forwarding to group.
> From: millenia2000 at hotmail.com
> To: wellner.christian at navy.mil
> Subject: RE: Auto Trans & Oxygen Sensor Questions
> Date: Wed, 14 May 2008 14:57:13 -0400
> 
> 
> 
> 
> 
> 
> 
> 
> The LC-1 is a wideband oxygen sensor controller that uses a standard Bosch 5-wire wideband sensor common from VW's. its made by innovate motorsports for $150
> http://www.innovatemotorsports.com/products/lc1.php
> 
> A standard narrowband sensor creates its own voltage in a binary style of above or below 450 millivolts (lean, stoic, or rich) which doesn't tell the ECU how far off it is.  This stepping is referred to as a binary or digital signal since its almost a Z-line graph
> 
> A wideband sensor needs a controller to provide it a reference voltage whith it translates into the A/F ratio in a true linear rate (aka analog) ranging from 5 volts for a rich mixture to 0 volts for an extremely lean mixture (0.0 volts for straight air). 
> 
> the main reason most cars use narrowband instead of wideband is due to cost. narrowband sensors can be replaced for 15 bucks or cheaper if you look hard enough whereas wideband sensors are in the 80+ range.
> 
> -Sean
> 
> > Subject: Auto Trans & Oxygen Sensor Questions
> > Date: Wed, 14 May 2008 12:26:48 -0400
> > From: wellner.christian at navy.mil
> > To: supras at supras.com
> > CC: millenia2000 at hotmail.com
> > 
> > Sean,
> > 
> > 	Sounds like the LC-1 O2 sensor is higher quality than stock.
> > 	What different in the "wideband" output of the sensor ?  I just
> > assumed that the output voltages would be the same for narrow or wide
> > band.  Are they different ?  Also, I keep hearing of "analog" output.
> > Is there a "digital" output on a wide band sensor ?  I'm just trying to
> > understand why the wide band output will not work with the factory ECM.
> > 	Where's the best (cheapest) place to get an LC-1 ?  Approx how
> > much does one cost.  My car has about 220K miles and the original O2
> > sensor has never been replaced....
> > 
> > Thanks, Skip
> > 
> > 
> > --------------------------------------------------------
> > Original Message
> > Date: Tue, 13 May 2008 11:56:20 -0400
> > From: Sean Cavanaugh <millenia2000 at hotmail.com>
> > Subject: [Supras] FW:  Auto Trans & Oxygen Sensor Questions
> > To: "Supras at supras.com" <supras at supras.com>
> > 
> > Using an LC-1 controlled wideband sensor makes a VERY noticeable
> > improvement. in addition to giving a wideband output for tuning, it
> > provides a much cleaner narrowband signal to the stock ECU. My old 87
> > n/a went from an ALMOST glass idle at 750-800 to a dead smooth idle as
> > low as 450-500. the software that connects to the LC-1 provides for you
> > to use a laptop as an O2 sensor gauge and datalog so you do not have to
> > buy any more expensive tools for the job.
> > 
> > do NOT connect the wideband output to the stock ECU, use the narrowband
> > output for that.
> > 
> > -Sean
> 
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