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Fish man Profile
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Date Registered: 02-2020
TOTAL POSTS: 4
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DPF and EGR delete.


Hi guys. My T31 is just on 6 yrs old now. Got it at the 2014 runout in Feb that yr. Got it with a 6 yr Nissan warranty which I was lucky to get as it came in handy in yr 4 and 5 of the extended warranty.
But it aint a spring chicken anymore and part of me wonders if I should now part with it. For the most part its ok but I now wonder how long the expensive DPF filter will last. I year they cost a small fortune to replace. So in looking things up I came across DPF & EGR delete options. I read conflicting info on this and was wondering if anyone here had it done or knows anything about it?
No, my DPF is not at this point a problem, but they dont last forever. So, anybody actually know anything about it. Apparently they reprogram the ECU to deactivate anything to do with them, also say it increases performance. Im not after performance increase as I'm quite happy with how the M9R performs with the manual box anyway. Cheers and look forward to hearing any info.

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T31 2013 Diesel
20/Feb/2020, 5:40 pm Link to this post Send Email PM   Send Private Message Blog
 
Revhead Kev Profile
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Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 5946
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Re: DPF and EGR delete.


Removing the DPF especially would be against pollution control laws and could lead to your Xtrail failing registration inspection.

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Kev X450(c) T30 Guru
03 Titanium Ti T30 Series 1 **MODIFIED**
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21/Feb/2020, 3:30 pm Link to this post Send Email PM   Send Private Message Blog
 
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Date Registered: 02-2020
TOTAL POSTS: 4
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Re: DPF and EGR delete.


Thanks mate. Did search after search after search and after it all, even though I've looked after this thing over and above with services before the time. Im gonna say goodbye to it. Added it all up in the last 2 days, if in the next 4 yrs i need a new dpf, and egr, clutch etc which will come up in that time im sure, it wont be worth it. Spoke to some people today. For what that would cost I could cut it loose right now and get a new car. So that's what im doing. Thanks for the reply. Goodbye thumper T31 Exy.
Cheers mate.
No more diesel dual mass for me. Not worth it.

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T31 2013 Diesel
21/Feb/2020, 5:09 pm Link to this post Send Email PM   Send Private Message Blog
 
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Date Registered: 02-2020
TOTAL POSTS: 4
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Re:


Hi all. Though think im saying it to a ghost forum.
So took my T31 in for a trade at Ballarat Nissan on a Demo Xtrail. I'll cut it short. On the website for them they had a demo for sale. Got there, same day, price was up by 1k. Would not give the loyalty discount. Offered just 6.5 trade in on a car that everywhere elses offered me 10k. Get lost Nissan. Done a mad great deal at Kia. Never will own or drive a Nissan ever again. They kept me there for over an hour making out like they'd look after me. End result, utter insult.
Thanks but no thanks to Nissan. No wonder this place, not on the runners and owners here as they are probably great people, but Nissan, once great are garbage. Oh, and the 2 litre Kia i drove would blow the Xt 2.5 off the road. See ya whoever is left here, my T is gone.

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T31 2013 Diesel
25/Feb/2020, 4:22 pm Link to this post Send Email PM   Send Private Message Blog
 
Johnnt Profile
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Date Registered: 07-2012
TOTAL POSTS: 29
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Re: DPF and EGR delete.


I don't know much about DPF delete's but i've spent the past two years mothering my T31 with various problems to do with the DPF/EGR etc.

I now monitor DPFs regens on a regular basis and on the few occasions where i have had problems i run a dpf regen then change the oil and filter.

I am not sure if you have an ODB2 dongle, but i use one with Torque Pro on my phone. I monitor the engine PIDs for Soot Mass. DPF Mode, Exh Temp pre and post.

Whenever the car gets up to around 30-35mg of soot, i take it for a run if i dont have one scheduled for the next day or so. I see the DPF mode flip from 4 to 3 which means it is doing a regen and i see the soot mass come down.

I replace the EGR valve because it was sticking (150$ off ebay). You can also buy for about 80$ a Maxi AP200 dongle for the phone from Autel which will also measure DPF pressure diff but i find soot mass to be a better gauge. It will also allow you to do a forced regen but you need to change the oil and filter after that.

Cheers

J

26/Feb/2020, 5:19 pm Link to this post Send Email PM   Send Private Message Blog
 
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Date Registered: 11-2017
TOTAL POSTS: 8
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Re: DPF and EGR delete.


quote:

Johnnt wrote:

I am not sure if you have an ODB2 dongle, but i use one with Torque Pro on my phone. I monitor the engine PIDs for Soot Mass. DPF Mode, Exh Temp pre and post.

Whenever the car gets up to around 30-35mg of soot, i take it for a run if i dont have one scheduled for the next day or so. I see the DPF mode flip from 4 to 3 which means it is doing a regen and i see the soot mass come down.

I replace the EGR valve because it was sticking (150$ off ebay). You can also buy for about 80$ a Maxi AP200 dongle for the phone from Autel which will also measure DPF pressure diff but i find soot mass to be a better gauge. It will also allow you to do a forced regen but you need to change the oil and filter after that.

Cheers

J



Hi John,
Great post thank you. I have been looking at a OBD 2 reader off and on for a few years but have read conflicting info regarding Nissan T31 OBD 2 not being a native variety but a nissan version so you need to use nissan consult 2 for regens, and other PIDs. I am aware of scanners that can accommodate nissan T31 OBD2 but $400.00 plus...to much for my needs. I have a 2009 T31 for 10 years now and dont plan on selling any time soon as only 125000km and going strong.
Please confirm the dongle you use with your Torque Pro app to allow you to do a forced regen? Is it the Maxi AP200?
So the type of dongle I buy will effects the features of Torque Pro app and what I can see and do? Not all dogles are equal? Stay away from ebay dongles then?
Cheers
N


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X-5276
FordGuy
2009 XTrail TS Diesel Auto
Brisbane


FordGuy with a Japanese car with a French engine.
3/Mar/2020, 4:27 pm Link to this post Send Email PM   Send Private Message Blog
 
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Date Registered: 07-2012
TOTAL POSTS: 29
Reply | QUOTE
Re: DPF and EGR delete.


Sorry, i could have been clearer in my last post.

i use a basic OBD2 dongle from Jaycar with Torque Pro to monitor realtime PID information for Soot Mass, DPF exhaust temperature, DPF mode etc but i use the Autel Maxi AP200 for regens and for monitoring DPF Pressure Differential.

The Autel Maxi AP200 dongle comes with a mobile app from Autel and allows you to do regens and monitor most of the information that is available through a normal Consult II.

You can use the the Autel app to monitor Diff Pressure and exhaust temps etc but for some reason it doesn't do Soot Mass or DPF mode.

I tend to use the Torque Pro for general use whilst i'm driving so that i can see the soot mass increase and the DPF regen kick in.

I have a problem with my dpf such that the soot mass will not go back to zero. I had an issue a few years ago and after doing the back and to with Nissan i got fitted an aftermarket DPF. This seemed to work for a while but then back with the DPF light and the Mil light. This is when i started looking into things a bit more. I managed to get the PIDs for torque pro so i could see what was going on and could now see that the dpf was regening but not going back to zero so was being classed as a failed regen. After so many of these, the DPF light comes on and then the mil light.

If it gets into this situation i just do a forced regen which usually fails after 40 mins as the soot mass has not gone back to zero, but has gone far enough down for me to just reset the DPF stats through the Maxi AP using DPF Data Clear, then do an oil and filter change and i'm back on the road.

Tbh if it happens again i will just do a DPF data clear as the regens are occuring and the soot mass is sufficiently low enough not to be an issue. Once you do a clear the ECU monitors the DPF pressure diff and recalculates the soot mass anyway and as you've reset the dpf failed regens it starts the cycle again. I usually do this every 6 months and has been going on for about 2 years now. The car still runs great with 300,000kms on the clock (2008 T31).

As far as the ODB2 port goes i believe it is standard but the Consult2 and the Maxi App also use the k-line for some diagnostics/programming which will not be available through ODB2 protocol. I have done some canbus sniffing and can see large data frames being transmitted and i think this is a defined block which Nissan use for realtime diagnostics. The list and order are exactly the same on the MaxiAp and the Consult2. It is also strange that they don't expose the Soot Mass and DPF modes which are supported by the ECU but only seem to be available in ConsultII+ for later models.

Check out one of my previous posts in a different thread for the custom PIDs for Torque.

Thanks

John

Last edited by Johnnt, 5/Mar/2020, 11:07 pm
5/Mar/2020, 11:03 pm Link to this post Send Email PM   Send Private Message Blog
 
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Date Registered: 11-2017
TOTAL POSTS: 8
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Re: DPF and EGR delete.


John, Great info again funny enough I was considering buying the Jaycar dongle...but due to lack of specific information with interaction with Nissan ECU I held off. While all the scanners and dongles list what they can read generically when it comes to actual compatability with vehicle model it is hit or miss and is not known until you purchase. Your information is the most comprehensive I have seen for the T31. The Autel Maxi AP200 I have read up on after your post, it is the cheapest unit that I have found that is bi-directional. It would be great to be able to perform a forced regen. Many reviews I have read says it is a bit clunky to use...do you find it clunky?
I checked out your post for custom PIDs and I have to say I did not understand, maybe it will become clearer when I buy the Jaycar dongle.
Thanks for your guidence.
Cheers
N

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X-5276
FordGuy
2009 XTrail TS Diesel Auto
Brisbane


FordGuy with a Japanese car with a French engine.
7/Mar/2020, 11:17 pm Link to this post Send Email PM   Send Private Message Blog
 
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Date Registered: 11-2017
TOTAL POSTS: 8
Reply | QUOTE
Re: DPF and EGR delete.


I meant to add that my exy DPF light has only come on 4 times in the 125k kms with the last time I had to get a forced regen that was 25k km ago. Apparently after each regen the DPF soot residual level slowly increases until the DPF just becomes full then a forced regen is required to burn out soot and restore the filter soot holding capacity. I was also advised that forced regens damage and shorten the life span of the DPF. I am careful with the 10k oil change intervals and only use nissan oem oil filter, run Penrite Enviro 5w40 C3 oil and only use Caltex Vortex or BP Ultimate fuel. I run the fuel doctor(supercheap) to keep fuel, tank, injectors and piston rings clean (and gum free for better seal, less blow by) and to lubricate the fuel pump and injectors...as low sulphur fuel has low lubricant properties. For the last 50k km I have been using Penrite DPF cleaner every 5k or 10k kms which claims to lower temp required to do a DPF burn amongst other claims. It is expensive around $29 per bottle but I wait until, it is usually Repco, have a 30% off sale and I always have one or two on the shelf. Seems to work as 95% of duty cycle is short city trips with only the occasion, say once a month maybe short hwy run and every 3 months a 600km run, touch wood my DPF gives very lttle trouble. Oh, almost forgot and importantly I fitted a flashlube catch can.
Cheers
N

Last edited by FordGuy, 8/Mar/2020, 12:30 am


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FordGuy
2009 XTrail TS Diesel Auto
Brisbane


FordGuy with a Japanese car with a French engine.
8/Mar/2020, 12:18 am Link to this post Send Email PM   Send Private Message Blog
 
Johnnt Profile
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Date Registered: 07-2012
TOTAL POSTS: 29
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Re:


I have been down a similar path with the fuel and fuel DPF additives etc and never really found them to make much difference. Or probably more to the point, been unable to verify as didn't have the tech at the time to do any detailed monitoring. I guess they wont do any harm, just maybe a bit expensive for what they are.

I have also read that regens put strain on the engine and reduce the life of the DPF. In my mind it's a bit hard to say this without any real evidence. I certainly wouldn't do as forced regen unless one was absolutely necessary. My car's on close to 300,000km so i don't really care too much about that now anyway. I think nissan were far to quick to push people down a new DPF route mainly from what i can see, is because they didn't have the tools to suggest otherwise and the original Consult2+diagnostic process were a waste of time for actual troubleshooting.

The whole regen process written into the ECU seems flawed and they could have done a much better job for the owner if they would have exposed some of the detail in dash etc. So for example, if the dash indicated the soot mass %, failed regens and when a DPF regen was taking place then this would have been really useful and also the fact that once the Mil light comes on, then a normal regen wont take place regardless of the driving style. It seems that a forced regen is required by the car when a normal regen may have cleared the issue and thus put less strain on the engine. I think there was a lot of experimenting with DPFs in the early days.

The jaycar dongle is a bit more expensive than the ones from Ebay, but i found it to be more stable and have good response times. The T31 fully supports OBDII and most dongles will work, but some are better than others - it is also the extended mode 22 pids that you want and they are manufacturer specific so not part of the mandatory ODBII diag information anyway.

The AP200 app is not the best in the world and the most recent update has probably confused more people more than helped but it does its job and is pretty stable. It is a diagnostic tool and thus designed to be used that way rather than something like Torque Pro where you create dashboards and leave it running with a head up display etc.

In terms of the PIDs in my other post, you need to have Torque Pro full version which allows you to add custom PIDs from the settings menu. The ECU in the car holds many different sensor values and internal calculations that are not exposed anywhere but can be accessed using a PID which is essentially reference. So for example PID 22242C is a reference for the soot mass. The returned value will a byte which you multiply by 256 then / 100. The OBD header will be 7E0 which is the computer reference of the ECU. I think torque pro uses 7E8 which is the response ecu reference which is alway greater by 8 and doesn't work for requests. You need to use the request ecu value of 7e0.

J

9/Mar/2020, 7:35 am Link to this post Send Email PM   Send Private Message Blog
 


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