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Thread: Some Bosch WB Sensor Info I've compiled

  1. #1
    Senior Tuner 5_Liter_Eater's Avatar
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    Some Bosch WB Sensor Info I've compiled

    For those of you looking for replacement Bosch LSU 4.2 sensors used with most of the different vendors' controllers I've taken the chart on the Tech Edge site, made some enhancements to it and created my own spreadsheet:

    http://www.uputz.com/download.php?fi...rt Numbers.xls

    I've also found these PDFs from Bosch with pictures of different part numbers, cross references and other neat stuff.

    http://www.bosch.com.au/content/lang.../Section_A.pdf
    http://www.bosch.com.au/content/lang.../Section_B.pdf
    http://www.bosch.com.au/content/lang.../Section_C.pdf
    http://www.bosch.com.au/content/lang.../Section_D.pdf

    Please let me know if you have any edits or updates.
    Last edited by 5_Liter_Eater; 03-13-2008 at 09:55 AM.
    Bill Winters

    Former owner/builder/tuner of the FarmVette
    Out of the LSx tuning game

  2. #2
    Senior Tuner
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    Jun 2007
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    Wow...great find. This really clears up some of the questions I had on the sensors.

    Especially the part about maximum mileage being around 15.5:1 to 16:1 AFR. I think a wideband with simulated narrowband circuit would be a great tool for fine tuning for mileage, making the car think it's cycling at 15.5:1 instead of 14.7:1 would increase mileage and simple tweaking of PE values would allow you to keep the same WOT AFR that gives max performance.

    Definitely something to consider.