DPF regeneration..according to Audi

[Guy_H]

Well a tuning "box" tricks the ECU into supplying more fuel & edits the feedback sent back to the ECU to say everything is normal, therefore on a DPF cycle, the system is trying to inject an "exact" quantity of fuel for the DPF burn, it gets an undesired extra amount of fuel. When I was last in Germany I was shown several burnt out DPF boxes that were the victims of over fuelling - not pretty & not cheap!

[gerhard]

Took the car out for a short run today and everything appears to be fine again, car is running normally and idling at the usual 800 rpm once at operating temp. I will still get the VW service dept. to check it out and see if they can find any errors, don't want to experience that again in a hurry, especially in traffic !!

Russ

Good to see I was wrong, and your problem is not really a problem

[Russ59]

Good to see I was wrong, and your problem is not really a problem

Cheers mate, yeah providing it doesn't do it too often I won't consider it a real problem either, but if it does it again under the same circumstances and someone runs up the back of me I won't be impressed at all. I think I might be doing a few nice day trips on a regular basis to keep the DPF flowing clean !!

Russ

[Russ59]

Well a tuning "box" tricks the ECU into supplying more fuel & edits the feedback sent back to the ECU to say everything is normal, therefore on a DPF cycle, the system is trying to inject an "exact" quantity of fuel for the DPF burn, it gets an undesired extra amount of fuel. When I was last in Germany I was shown several burnt out DPF boxes that were the victims of over fuelling - not pretty & not cheap!

So are you talking about chipping (ie tuning box) causing problems with the actual DPF filter ?? Hence meaning it would be safer not to chip the vehicles fitted with the DPF ??

Russ

[Greg Roles]

That's what the Guy man is saying. Makes sense to me, no way I'd risk a $40k plus vehicle with a tuning box over a properly integrated tune.

Thanks also Russ for being the DPF regen on cold guniea pig. Moral of the story is if you think the car is doing a regen cycle, drive it till it's done! If that happened to me cold, I'd pull over and let it idle for the 10 mins till it was back to normal!

Scary experience all the same russ!

[Mischa]

i would never do any performance mods to my car with the dpf still in there. if anyone is serious about removing their dpf, pm me, i've found somewhere that can code for it.

[DSGMAn]

So glad i don't have that cancer hanging off a downpipe on my turbo ^^

Black soot all the way for my 06 TDI - weeeeeee!

But tuning boxes suck overall DPF or not.

[Russ59]

Thanks also Russ for being the DPF regen on cold guniea pig. Moral of the story is if you think the car is doing a regen cycle, drive it till it's done! If that happened to me cold, I'd pull over and let it idle for the 10 mins till it was back to normal!

Scary experience all the same russ!

Hey Greg,
I just wish I'd known to expect this could happen, might be nice if VW warned people about the possibility and what may happen. Could be a real hazard in some situations !!! Fortunately all is OK and I will be prepared if it does it again !!

[Greg Roles]

So glad i don't have that cancer hanging off a downpipe on my turbo ^^

Black soot all the way for my 06 TDI - weeeeeee!

But tuning boxes suck overall DPF or not.

Sweeeeeet. When your kids show up at the Childrens with severe lung problems, I hope I'm there.

[DSGMAn]

Sweeeeeet. When your kids show up at the Childrens with severe lung problems, I hope I'm there.

Damn - that's a nice thing to say.

Hope you're also lobbying trucking companies and everyone who drives petrol cars?

Don't hate the non DPF people - wasn't our choice.

[Greg Roles]

Yeah sorry man, I rethought it and by then couldn't edit it, so I apologize being so harsh. I do see a lot of problems in my work, so I'm a bit sensitive I guess, especially what I see with the kids.

I know that there are plenty of bigger polluters out there, but I do find problem with people who laugh about producing a ton of soot. I had to breathe it in out cycling again this morning when the odd old truck went by, and it ain't pleasant. Sure it's my choice, but I look forward to newer, cleaner cars as technology advances. Even stock the DPF on the latest TDI certainly allows amazing power. My DPF will be staying very much put unless I can find a very clean burning tune, or use LPG or similar to clean it right up.

Anyway, back to the normal thread topic.....

[DSGMAn]

Yeah sorry man, I rethought it and by then couldn't edit it, so I apologize being so harsh. I do see a lot of problems in my work, so I'm a bit sensitive I guess, especially what I see with the kids.

I know that there are plenty of bigger polluters out there, but I do find problem with people who laugh about producing a ton of soot. I had to breathe it in out cycling again this morning when the odd old truck went by, and it ain't pleasant. Sure it's my choice, but I look forward to newer, cleaner cars as technology advances. Even stock the DPF on the latest TDI certainly allows amazing power. My DPF will be staying very much put unless I can find a very clean burning tune, or use LPG or similar to clean it right up.

Anyway, back to the normal thread topic.....

I understand dude totally - I'm a cyclist myself.....I live in Pyrmont, inner city Sydney and walk/cycle to work everyday (Car is for weekends now). I personally can't wait for electric technology to take over and finally rid the world of at least car produced pollutants. The soot part of my write up was in jest....not much i can do about it until my bro hooks up some H2 Injection for me

[Russ59]

Quick update on the DPF regen. cycle (cold engine) I had the car into the dealer today to fix the plastic moulding on the passengers door. I had mentioned to the Service Manager prior about the problem I had experienced with the car running like a dog and then dying on take off, they ran a diagnostics check on it and no errors were registered apparently so it must have been a " Cold Regen " If you suspect it's happening to you try and get off the road as soon as you can and let it complete the cycle itself because it's damn dangerous to try and drive the car once it's starts. On a brighter note the car hasn't missed a beat since then and when it was in today they did some sort of an update as well and the car seems to be running even better.

Russ

[Greg Roles]

Hey Russ,

Good to hear. I actually owe you one, as when I pulled into my driveway last night I noticed it had started a regen cycle, idle was at 1000. I backed out and went for a drive for a bit, till it finished.

Funny it isn't mentioned in the manual, as it's a bit of a trap!

[Russ59]

Hi Greg,

Car's running heaps better at the moment hopefully it will stay that way, I don't want to experience the "Cold Regen Cycle" again in a hurry especially in traffic ... what a nightmare.