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Discussion Starter #1 (Edited)
Afternoon all,

Have read a lot of posts around this subject & honestly I'm not fully clear on what actions I should be taking given the assumed predictable dpf 'fail' circa 125 - 130k miles for which I'm in that bracket?

I also want the car to be able to legally pass the MOT in Jan 2021 and my mileage is likely to be around 135k miles by then..

I've read much about washing/replacing dpf's, but as I'm planning to do a remap I understand dpf deletion can be included but I'm wary as to how MOT passability could be affected..

Appreciate your tips and advice

Thanks
 

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Hi.....I believe there is a dpf friendly remap....have a look at hdi tuning web site...hes also a member on here
 

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Discussion Starter #3
Hi.....I believe there is a dpf friendly remap....have a look at hdi tuning web site...hes also a member on here
Thanks noddy.
I will be checking for sure as I'd probably prefer to gut the dpf from the can, get the mapping done etc, but concerned about MOT MOT passing

At the end of the day the junk taken by the dpf gets released over time during regens, so it's going into the atmosphere one way or another!

I also understand these engines are very clean emissions wise with or without dpf from factory..

Cheers
 

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My own 407 2.0 (2007)has had a dpf/egr removal remap and was concerned about the 'new' particulat filter check last year..only to find my car is now tested as a 'turbo' model....so it was a breeze...the tester(I didnt know him) looked at the door pillar for spec and said 'after' a cetain year they have to check particlulates....perhaps a current tester can clarify that....although it still has to be visually intact....
 

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Discussion Starter #5
Thats interesting noddy!
Well mine is 2013 so I'll have a gentle chat with the mechanics at the garage I use that also MOT tested it.., from what I can see/have read the dpf can easily splits on this engine..
 

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My dpf has been gutted and been remapped out, I didn't have any issues with an MOT.

I can only assume it passed without them bring aware of the removal?

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Discussion Starter #7
What year is yours Sicskate?

I've not read anything that gives a date before/after re a diesel car with/without a dpf re particulate test.

Your remapping was just for dpf deletion or power/torque increase?

Thanks
 

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diesel fumes have high cancer rating....fap delete promotes this crap even more.
if you cant afford service, buy petrol.
 

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At the end of the day the junk taken by the dpf gets released over time during regens, so it's going into the atmosphere one way or another!
Are you really serious? So, everyone is just crazy? They put the DPF just to delay the junk going into the armosphere? LOL!
 

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It's a 2008, so older than yours.

I couldn't tell you what or how it was done, as it was done before I owned the car and I haven't got any proof to say it's actually been done...





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You may struggle to get a emission pass with no DPF on a post 2008 car as it has a lower smoke limit of 1.5 or what is listed by the manufacturer if lower.

Jan 2014 onwards the limit is even lower 0.7 or manufactures figure and it is next to impossible to pass without a DPF fittted.

I know someone who had a bad remap and even with a DPF it failed as the manufactures limit was 0.3 and it was 0.55

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Discussion Starter #12 (Edited)
Thanks windy for the clarity of your reply.

Ok, so dpf must remain. I can always get as mentioned by noddy a dpf friendly remap, noting the caution from windy.

So, as per my original post what actions should I be taking if the warning light is inevitable for dpf replacement?
I had the PAT fluid refilled last year so in theory with a full to empty to full fuel filling strategy, I should be able to get 80,000+ miles out of that.

So, to the dpf.., wash or replace?

Have those who've washed noticed a change in performance?

If the replace route seems favourite for less messing about & perhaps best restored performance, from where is most recommended?

I've not checked with a Peugeot dealer, but guess they'll be by far the most expensive, even if their part is OEM original rather than aftermarket..

  • Eurocarparts are £700+ for a new dpf
  • CATS2U are from £150 up for a new dpf..with 2year warranty..
The Millers and Archoil could possibly stave off washing/replacement for quite some time, but that 'replace' warning light is inevitable at some point from what I've read once over 100,000 miles..

The dpf has a real component service life anyway..., with or without washing that no light resetting will resolve.., whether its 130,000 miles or higher..

Appreciate your tips and advice in advance as to what route I should take, and if that should be proactive action rather than waiting for the light and taking action then..:unsure:

Thanks
 

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HI....I would keep the car 'standard' if all the re-gen systems are working as they should you should see no problems...and reading back to your first post you dont have any issues at the moment..providing the car doesnt just do short trips...all will be well..
 

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Discussion Starter #14
Thanks noddy - appreciated!

Any short trips have become much longer & more throttle heavy since I learned last year how the dpf & regen works exactly.., for the reasons mentioned!
My wife knows a short trip to the shop becomes a longer faster one for the sake of the car..:rolleyes::sneaky:

When my cruise stalk arrives and I find someone willing to systems integrate it for me I'll probably ask them to check the onboard data for the dpf..
Not sure what else can be checked..

Cheers
 

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If a remap is done right it should not impact DPF life. I have a 190 BHP on my 2.0 163 which now has over 125 k miles on the clock.

I have just had to refill additive and I reset DPF without touching it and it's all fine with less than 50% loading listed in diagbox.

I have also back flushed a few 1.6 hdi DPF with a pressure washer over the years with no issues

One of the most common failures I have seen (more so on TDCI) is pressure sensor pipes failing at the DPF end due to heat etc which then triggers a dpf fault.

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At the end of the day the junk taken by the dpf gets released over time during regens, so it's going into the atmosphere one way or another!
NOT true.
fap is similar as coal stove.
carbon particles are burned during high temp regen into health-harmless co2 gas.
what is left in stove and fap, is the metallic/sulphurous ash.
by fap delete you are literally throwing coal at the people.. this is the respiratory/cancer is coming from.
there are special cleaning fluids, or exchanging it for refurb.

if fap gets full quickly, likely there is problem with engine. or driving usage.
diesels are NOT good for short trips, from many viewpoints.
 

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Discussion Starter #17
If a remap is done right it should not impact DPF life. I have a 190 BHP on my 2.0 163 which now has over 125 k miles on the clock.

I have just had to refill additive and I reset DPF without touching it and it's all fine with less than 50% loading listed in diagbox.

I have also back flushed a few 1.6 hdi DPF with a pressure washer over the years with no issues

One of the most common failures I have seen (more so on TDCI) is pressure sensor pipes failing at the DPF end due to heat etc which then triggers a dpf fault.

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Thanks windy - very useful.
 

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I came here looking to post a new thread on DPFs and found this one.
I have to agree with hpc3 100% of the way, "if you cant afford service, buy petrol"
And windy1603 is also 100% correct, you may struggle getting a car through the emission test since in 2018 the authorities tightened the regulations on the exhaust gas analysers to catch people who had removed their dpf from the system. I spoke to them, email, in 2017 as they were looking for ways to catch the cheats.


I also hugely dislike the sellers of EGR blanking plates, it just promotes poor maintenance and creates all those vehicles you see emitting huge amounts of black smoke as they accelerate.

But enough of what I like and dislike, the real problem is how does one get their Peugeot dpf replaced for a reasonable price.
I've waited over 2 weeks for my local garage to re-open during this lock down period, I urgently need to establish from whom did they purchase the new DPF fitted to my car October 2018 for £287 fitted.
In 2018, the price for a non badge dpf from Peugeot was just over £400, their badge'd dpf was over £600, so I went with the pattern part.

A few weeks ago something in my DPF housing snapped off the tip of my EGT sensor, it sits just above the DPF, I fear it is the DOC, Diesel Oxidation Catalyst.
I am yet to establish if the garage disposed of my genuine CAT & DPF in favour of an all in one piece CAT & DPF.
If they have, they have thrown away an £861 DOC / CAT at today's prices, yes £861 just for the CAT and £701 for the cheaper DPF.
Fortunately my car still regenerates but not without an 'anti pollution' AND 'risk of filer blocking' info message prior to the regen.

Back in 2017 when I first got the 308 with 135000 miles, every time I started the engine, I'd get an 'info message - Risk of Filter Blocking'
Peugeot charged me £50 to tell me the original DPF was at 65% of its life, but not why I was getting the message or how to stop it.
After some research, they then charged me another £50 when I told them to tell my car it has a new dpf.
No more messages or warnings.

That can be done in Diagbox under the dpf section and PACK REPAIR.
One can carry out a regen, reset the fap fluid level to full and reset the ash / soot counter by telling the car the DPF has been replaced (just 3 things)

My car has 150'000 odd miles now and Diagbox has no way of knowing my DPF had been changed so can't give me a life span, it just figures it needs to be changed.

I wish I had kept my genuine parts and had the DPF professionally cleaned / back flushed.
Though looking at some used DPFs on ebay, the outside look very rusty as I'm sure my original was.

Euro Car Parts always have discount codes of 40% and sometimes 45% so their cheaper complete CAT / DPF is less than £200.
or this link below for £245

I need to establish what had broken my EGT sensor and why the replacement did not push into the hole, there was something there, probably the DOC.
I had to make a hole with a screw driver to fit the new EGT sensor.
Everything works but something is wrong.
The differential pressure, usually at 30 mBar at 60 mph is sitting close to 100 mBar.
Was my local garage supplied a poor quality dpf assembly or a good one that just fell to bits prematurely.

I need to contact them to see where I stand.
Some manufactures give 3 year warranty.
 

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Some of the aftermarket DPF's have a smaller matrix (to save cost) in the housing and therefore less surface area which results in higher differential pressure
 

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Discussion Starter #20
Some of the aftermarket DPF's have a smaller matrix (to save cost) in the housing and therefore less surface area which results in higher differential pressure
That's interesting windy.

If an aftermarket dpf is sold with type approval and for EU5 or EU6 respectively, surely it should match OEM operating parameters?
 
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