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  #1  
Old 07-28-2019, 01:33 PM
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Anyone ever buy a used DPF?

So far my X5 has run with no emissions problem other than the def tank freezing up several times last winter (it was -10F and windy). Dealer said this is normal and not indicative that the def tank heater needs replacing. They said to let the car idle for a while so the def can unfreeze.

With two kids in college I need my x5d to last another 4 years and 50k miles.
In preparation Iím thinking about buying a used DPF and having it professionally cleaned so when mine clogs up I can be back up and running in a day.

(1) anyone tried having their DPF cleaned at a place that does commercial truck filters?

(2) anyone have a used DPF from a delete for sale?

John
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  #2  
Old 07-28-2019, 02:19 PM
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Quote:
Originally Posted by bfeng View Post
So far my X5 has run with no emissions problem other than the def tank freezing up several times last winter (it was -10F and windy). Dealer said this is normal and not indicative that the def tank heater needs replacing. They said to let the car idle for a while so the def can unfreeze.

With two kids in college I need my x5d to last another 4 years and 50k miles.
In preparation Iím thinking about buying a used DPF and having it professionally cleaned so when mine clogs up I can be back up and running in a day.

(1) anyone tried having their DPF cleaned at a place that does commercial truck filters?

(2) anyone have a used DPF from a delete for sale?

John
I'm not a PRO but I think some will suggest you do DPF Delete + Remap....
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  #3  
Old 07-28-2019, 03:09 PM
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Quote:
Originally Posted by bfeng View Post
So far my X5 has run with no emissions problem other than the def tank freezing up several times last winter (it was -10F and windy). Dealer said this is normal and not indicative that the def tank heater needs replacing. They said to let the car idle for a while so the def can unfreeze.

With two kids in college I need my x5d to last another 4 years and 50k miles.
In preparation Iím thinking about buying a used DPF and having it professionally cleaned so when mine clogs up I can be back up and running in a day.

(1) anyone tried having their DPF cleaned at a place that does commercial truck filters?

(2) anyone have a used DPF from a delete for sale?

John
I don't think anyone here has clogged up a DPF from normal use/mileage. There are many users with 200k miles on the original DPF. The DPF issues I have read about are usually caused by other mechanical issues that are left uncorrected for too long.
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Old 07-28-2019, 04:39 PM
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I’ve got one, but the scrap yard will give me $150 for it.
In general, for longevity, you’re just better off deleting and tuning. Barring that, as long as you occasionally drive on the highway the dpf should be totally fine.
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'10 X5 35d- 235k mi, deleted and DUDMD stage 2, daily and tow vehicle
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  #5  
Old 07-28-2019, 06:27 PM
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Guy
I am not going to delete and tune. There is a good reason all that complicated emissions crap is on our cars. And I’m actually impressed that BMW didn’t cheat like VW. Modern emissions controls make a good balance between power, economy and environmental responsibility. Just as I recycle all my automotive toxic wastes (oil, coolant, brank fluid, and even stuff like used lacquer thinner, I think keeping our emissions systems working correctly is being accountable to the human race. I bought my X5d fully aware that at some point I’ll need to spend $$$ to keep the emissions system functioning as designed. Fwiw, it’s not like the old days when BMW installed thermal reactors on M30’s that would warp the heads in 15k miles. The main downside to modern pollution controls is just the the cost. IMHO, if you are too cheap to pay to play with big power diesels then you should get an X5 with a V8 or deive a Prius

John.
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  #6  
Old 07-28-2019, 06:31 PM
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And thanks for he data point on value of a used DPF. $150 seems very reasonable to me.

And ... I have some classic cars that pollute like crazy (1950’s sportsscars all did).
I make no apologies those these cars because I keep them in good running condition and they aren’t DD’s.
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  #7  
Old 07-28-2019, 07:55 PM
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Hey man, I’m not trying to fight. We’re all entitled to our opinion, and I wish I could’ve made my motor entirely worry free without deleting the emissions. I really do. But in reality the system on the m57 is simply not a long term reliable system. I drive 40-50k a year and I’m not going to put $3000 into the emissions system ever year at the dealer to keep it happy, the car only cost $4300 lol. I wanted something I could depend on, be unrestricted for it’s true power levels, and most importantly absolutely, positively, not break. For my usage case, deleting was a no brainer as soon as the first problem popped up. That’s my usage, and my opinion. You simply said “I want reliable for another 4 years, how should I prepare for a DPF failure” and naturally my response is “remove it.” Simply put, that is the most consistent route to reliability.

In general though, do you have problems? Your egr system is going to die/ leak way before your DPF has problems. How many miles is on your car? Is it not under the warranty still?

Also, that’s scrap price. I suppose that’s what it ends up being worth but I’d try to sell mine for more, I can give you readouts of the condition it was in before I pulled it out. They say at 100g of ash is when it starts to clog up and mine was at 9-10 I believe. With highway miles they stay clear for a long time. Your level sensors will likely go first. Which entail an entire tank replacement ($$). The sensors are what really goes first usually, then the egr causes CBU, but that’s not a huge problem on x5’s vs 335’s.
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'10 X5 35d- 235k mi, deleted and DUDMD stage 2, daily and tow vehicle
'01 330i- Drift car: SLR Super angle, BC coils- keep it simple
'07 335i 6mt - Sold @ 171k miles- stage 2 daily commuter for 2 years
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  #8  
Old 07-28-2019, 08:12 PM
ard ard is offline
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John-



kudos.


Tired of the knee-jerk "delete" mantra. (Almost as bad is 'runcraps'.)


I will admit that there are times when emissions isnt worth it. I have a car that required a SW fix, to avoid $11k in head work- the trade off was elevated emissions during the 120 seconds of cold start when the secondary air pump runs. But otherwise I leave emissions intact. I will never be faced with a "$3000 at the dealer to fix" scenario. IMO it is a large gap in knowledge abut the different systems that leads to the 'delete' mindset...



however, easy for me to say- my D is behaving...no interminable CELs and codes and parts replacement-go-rounds.






I really like your idea of having a DPF on standby


In fact, it could be a lucrative (a relative term, for sure) business idea. A shop that does DPF cleaning, instead collects up a handful- $200 core charge.... people can click on a button and get a remanned DPF. Instead of the whole 'can you clean it...how do we do this'...'where do I ship it' dance.



I cannot recall many (any) "DPF Cleaning" threads. If you do, we should start one to capture the process- AND identify shops/companies that do it.
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  #9  
Old 07-28-2019, 08:35 PM
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I don’t think I’ve seen any around here or the other xbimmer forum. I know that had I only had dpf clogging issues (i had tank sensor issues) I would’ve reached out to a family friend who owns a large trucking business. His techs said they’d be able to bake it out for me, and get it back to brand new condition.
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'10 X5 35d- 235k mi, deleted and DUDMD stage 2, daily and tow vehicle
'01 330i- Drift car: SLR Super angle, BC coils- keep it simple
'07 335i 6mt - Sold @ 171k miles- stage 2 daily commuter for 2 years
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  #10  
Old 08-05-2019, 04:32 AM
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In western Europe cleaning DPFs for passenger cars is well established, partly because there are annual tech inspections. (Nevertheless, my nephew tells me there plenty suppliers willing to do the delete for very little money.)

Just had mine done when it landed in Rotterdam, company was Diesel Buchli. While searching I found one supplier in Germany that sends out a replacement DPF and charges a core fee until the item off the car is sent to them.

Given the hourly rates in the US (for removing the PDF) and the rapidly declining sales of diesel vehicles I doubt anyone will take up cleaning DPS for a living....
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