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Thread: Dpf update advice

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    Default Dpf update advice

    Does anyone who has had the software update to activate the dpf regeneration more often, know how it works. Does it activate after so many miles, or is it based on the saturation level of the filter, or some other data.

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    its a combination of multiple factors, my car is doing it on average every 800-1000 miles

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    Thank BMAstra for your reply. Do you know if you can still activate a re-gen by booting down the motorway in high revs or is it all down to the ecu after this update. I was on the M4 a few weeks ago and thought i would try to get a re-gen, I dropped down to 3rd gear and drove for 10 miles at 3500 revs, but no re-gen,yet a couple of days later doing about 30 mph in traffic the DPF started a re-gen. Trouble is trying to get any info from vauxhall is like getting blood out of a stone.

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    If I'm right, there's two lamda sensors. One before the cat/dpf and one after. The ECU monitors the oxygen level before and after and if the levels are low (i.e. the dpf is blocked) then it does a regen.

    This is basically how I understand it to work, but I may be wrong.

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    I've had my car over 3 years and I've never noticed it doing a regen. Apart from watching the fuel consumption is there any other way of knowing when it's doing it's thing. Mine obviously is working because it registers no emissions on the MOT and the tailpipe is spotless. I'd just like to know when and how often it does it.

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    Some of the early cars used to put the eml/emissions light on to indicate a regen was taking place, but as you can understand, lots of people took their car to Vx to fault find it. Now the only way to notice a regen is the poor fuel econ.
    Seems there are load of products out there to help clean the cat/dpf, maybe another service item!

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    Quote Originally Posted by badback View Post
    I've had my car over 3 years and I've never noticed it doing a regen. Apart from watching the fuel consumption is there any other way of knowing when it's doing it's thing. Mine obviously is working because it registers no emissions on the MOT and the tailpipe is spotless. I'd just like to know when and how often it does it.

    if im on the motorway then sometimes i dont notice anything but if my range has gone down a lot i know why, when mine does it when in traffic the people behind me dont like me much as it smokes out the back

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    Regular Member si_hoss's Avatar
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    Am I right in thinking it's just the CDTI's with this, ie my DTi hasn't?

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    CDTI estate, auto and Signum mate

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