BMW X5 35d update: Shedding some weight plus a new item

Posted By on May 28, 2016


It is amazing just how many exhaust parts find their way onto modern cars. They do a good job of making diesel exhaust clean, but the expensive and complex DPF_X535dprocess is going to kill the internal combustion engine, in my opinion. I’m amazed at just how much "junk" I had to remove (above) in repairing my BMW X5 35d (click DPF filter at right to see particulates that would not regenerate). After adding up the parts and labor, it is no wonder I was able to purchase for a better than expected price (A word of warning to potential BMW diesel buyers … know what you are getting into).

That said, the new tune and performance gains are impressive … although I haven’t really pushed anything as it is not back together yet. I’ve got a couple more "fixes" to do in the next couple of weeks and am hoping to see a few mpg gains on road trips?  Time to do it is the problem, as between graduations, estate sale and a birthday party for Taylor at our house, I will probably continue to drive the Mercedes 300D Turbodiesel love driving it anyway.

Item on order from Andrew at Smile 




  • Here is what replaced the “hefty” items:

    Opinion: EVs are going to beat out gasoline and diesel cars not on their own merits, but due to the emission complexity mandated by government on internal combusion engines.

  • does this mean no more limp mode?

    • CORRECT!!! Although I have some putting together yet to do … and am waiting due to USPS holidy schedule. Grrr.

      • It arrived while we were in Atlanta … now to find time to put this on and get the car put back together.

  • Pingback: An EGR Race Pipe mod for the BMW X5 35d diesel SUV | My Desultory Blog()

  • Pingback: My Desultory Blog » Fuel economy on the BMW X5 35d diesel after modifications()

  • Cameron Moore

    Have you thought about removing the active and passive urea tanks? I’m tired of getting check engine lights for emission related problems and want to do what you’ve done. Did that tune remove all emission related check engine lights?
    Have you had to rebuild the turbos yet? I saw in one of your other blogs that your car has reached 150,000 miles just curious what possible issues to prepare for. My 2011 just hit 75,000 miles.

    Your blogs are so helpful, thanks for taking the time to write them!

    • Sorry to have missed your comment … but no haven’t had any turbo problem. The key to avoid check engine light problems is to have the ECU recoded and use the Carly for BMW software to read and clear codes until you get it right … although my problems were all due to not knowing what I was doing when unplugging sensors bit by bit due to previous DPF issues. I personally WISH that replacing or cleaning a DPF was easy and inexpensive (should be) so that it would encourage used diesel car/truck ownership … but if you’ve priced it, you know how expensive keeping high mile diesels drivable is. It is an uphill battle.

Desultory - des-uhl-tawr-ee, -tohr-ee

  1. lacking in consistency, constancy, or visible order, disconnected; fitful: desultory conversation.
  2. digressing from or unconnected with the main subject; random: a desultory remark.