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Hello, recently I had replaced an aging 4.2LSU controller with a newer one using the LSU4.9 sensor.
In my hunt looking around I found an alternative version called the LSU4.9D, made for diesel applications. It's from I believe a 2006-2010 Dodge Ram 3500. Bosch: Part Number: 17212
You can view the Bosch Motorsport Data Sheets in PDF form for these in your browser, with these two links:
The outputs are the same as the normal sensor, but it is rated to higher exhaust gas pressure: < 4bar vs < 2.5bar. And higher vibration tolerance levels: < 1,000 m/s2 vs. <300 m/s2
As well, the body design is a little bit different, having an extended level of shrouding around the sensor's reading area. Sort of a mini version of the same effect people get with the extended O2 sensor mounts I would guess.
I have been running the LSU4.9D as a plug and play for my new AEM controller. The values were the same calibration as the 4.2 and 4.9 (Haltech PS1000). So far I have put about 12,000 miles on it and have been happy with the operation. I figure it's basically just a heavy duty version of the same old thing. The 13BT is tough on O2 in my application, real close to the turbo outlet. I also appreciate the vibration resistance as the car and exhausted is raced and rattled, just a little on the staging lanes. I haven't had any issues with this yet. Though I don't try to roast them on purpose.
Older thread, but appreciate the feedback on this. I have the same 4.9 sensor. I actually moved the bung from the downpipe into the midpipe. I spoke with a handful of people and they all mentioned that keeping the o2 sensor 12" from the exhaust would kill the sensor quickly and apparently give slightly different AFR readings. Will look into the 4.9D when I need to replace.
