[Yozh]

I'll let pictured do the talking:

[TDIwyse]

Wow. That doesn't look good.

[Timujin]

WTH is that inside of? Where is the laxative for that clog?

[Yozh]

The laxative is water, it dissolves the urea. Basically, these pictures are of a downpipe after about 10000 miles. There was no DPF and urea injection is still not tuned-out. So when urea mixed with soot, it formed this cake like substance.

All the bits pictured are the urea delivery unit where it attaches to the downpipe and all the stuff in between.

[taibanl]

Originally Posted by Yozh

The laxative is water, it dissolves the urea. Basically, these pictures are of a downpipe after about 10000 miles. There was no DPF and urea injection is still not tuned-out. So when urea mixed with soot, it formed this cake like substance.

All the bits pictured are the urea delivery unit where it attaches to the downpipe and all the stuff in between.

Damn. Good to know its not from standard config

[glitdi]

wow!
that is some carnage...glad to see the swap went well.
any ideas of egt temps.. I know you said you were overfueling.. thats a little extreme...

[Yozh]

Overfuelling probably has something to do with this as it adds more soot. But I think the main problem here is this downpipe was not designed to be ran with the urea injection. Stock DPF has a little lip to prevent soot form directly flooding the urea nozzle. I also do not think that urea was designed to mix with soot anyway.

I would encourage anyone with the DPF delete and still spraying urea to take their urea nozzles off and check for blockage like this. It is very easy to clean, but if blocked completely, you may experience some urea delivery system failures. Thank God on mine, I still had a little passage through which urea had a chance to come through. Now, with the gutted DPF I will check now it looks after a while and in the future hope that I will be able to turn off urea.

[BB_cuda]

Yozh,
So thi is a hole in the little plate that bolts to the outlet region of the downpipe, right? This is an OEM part that got a hole eaten into it? wow

I guess if we switch over to the Jarek tune, we could utlimately have a simple stainless steel plate made to block off that area after injector and all else upstream is "put in garage".

[joe_planet]

ecotune pipe shouldnt even have a bung for the urea injector since its "tuned out"

I'd just put a plate over it and be done.

[Yozh]

Originally Posted by joe_planet

ecotune pipe shouldnt even have a bung for the urea injector since its "tuned out"

I'd just put a plate over it and be done.

Well, it is not tuned-out and is spraying as it would on a stock car. After the tune I got a no-start countdown quite shortly, and now have gone though another 2.5ga of urea and got another countdown. And now, taking the urea nozzle apart, I see what urea mixed with soot looks like. Ideally, I would want to put a block off plate there and not worry about it. And yank my urea tank out too.

[Yozh]

I just want to clarify that pictures above show the parts represented in the picture below and highlighted in red, except I had these hooked up to the downpipe and not the DPF:



First two photos are quite obvious. Why there is urea dripping mixed with soot, is probably because there was not a good mating surface between flange 12, gasket 11 and Ecotune downpipe. I also have noticed that there are restrictions in the path of the urea on the Ecotune downpipe.

Third Photo, shows a beehive built from crystallized urea mixed with soot. This is after I have removed clamp 15 and nozzle 14. This beehive has built into the inner nozzle shape. Beehive is sticking out of flange 12.

Fourth Photo is the inside of the nozzle itself.

Fifth photo is flange 12 after I have removed it off the downpipe and a look from inside, the build up of urea and soot.

Last two photos is the look inside the downpipe, looking at the urea nozzle opening and the build up from where urea was spraying.

When I get my downpipe back from rework, I shall take more pictures to show the restriction. If there is interest in this of course.

[joe_planet]

You can try using water.. Def is mostly water anyways

[Yozh]

Originally Posted by joe_planet

You can try using water.. Def is mostly water anyways

Cleaning up that crud was no problem, it was not caked on hard and I just picked away at it. Water would have dissolved it as well.

If you mean spraying water instead of urea, I have not tried that as I am not sure what NOx sensors will see with this tune. But I hope to properly retune and not worry about it.

[glitdi]

Most def systems wont let you run straight water etc.. they use some sort of a sensor to prevent people from cheating. Heard stories of truckers pissing in the def tanks (seriously) to try to cheat the urea system instead of buying the costly def solution... Then towing the truck 100 miles to have the system reset, and def added. Idiots.
Dont know if our cars can tell the difference or not, but I know the heavy duty German stuff I work on can and the new gen vws also know the difference. keep some def on hand for a while if you decide to try this.

[Hoooper]

He has a tune that is supposed to have deleted the urea system. It didnt, but since it was supposed to its possible that the system isnt using the NOx sensor feedback that it would normally use to determine that the fluid is actually urea or not. On a stock car it uses the NOx sensors to determine if the expected amountof NOx reduction is happening with DEF. If it doesnt hit the minimum, the car assumes you are using something other than urea and it gives you the no restart in 200 miles warning.

[joe_planet]

Originally Posted by Hoooper

He has a tune that is supposed to have deleted the urea system. It didnt, but since it was supposed to its possible that the system isnt using the NOx sensor feedback that it would normally use to determine that the fluid is actually urea or not. On a stock car it uses the NOx sensors to determine if the expected amountof NOx reduction is happening with DEF. If it doesnt hit the minimum, the car assumes you are using something other than urea and it gives you the no restart in 200 miles warning.

I see, I was merely suggesting using water because the tune was supposed to take care of this.

Is there really no word from ecotune or rsworx about fixing the problem?????
10 people paid 1250 that's 12.5k!!!! and they cant figure out the issue??

[glitdi]

I have a tuning buddy very reputable in the euro market.Working on something down the road... Says deleting the def is extremely difficult, he said the tuning world is having growing pains as far as def deleting is concerned. its complicated, there is a lot of subsystems linked to the urea channel. When a tuner deletes the egr he typically isn't deleting the egr system just confusing it. Adding code or a channel into an ecu is as far as I know is improbable. Just like deleting a channel is improbable, you need to replace it with something.

[Yozh]

Originally Posted by joe_planet

Is there really no word from ecotune or rsworx about fixing the problem?????
10 people paid 1250 that's 12.5k!!!! and they cant figure out the issue??

Joe, RSW is MIA and is now at odds with Ecotune. I would not trust them anyway. Stan has offered to fix this, and we know it is possible because TDI is running his tune successfully with most everything tuned out, including urea. Unfortunately, though, shipping to Scotland and being without a car for a week or longer that is what's hard and expensive.

[joe_planet]

Thanks Yozh, I did call rsworx and they confirmed that ecotune wont even communicate with them anymore. Having said that I still need to get my tune back, so I emailed stan and we'll see what his response will be. I do have a second car available.. so I might be able to ship it to scotland if its not too expensive.

[2deerwhistlers]

My DEF and EGR systems are properly tuned out by jarek

[iaknown]

Originally Posted by 2deerwhistlers

My DEF and EGR systems are properly tuned out by jarek

Just keep this in mind, you're going to spend the money to send your ecu to a guy that has been telling us all these things have been coded out already no matter what proof we presented? And you're confident you will get the correct results? And what happened to the Spiderboot and MPF option that he told us over and over was ready even though it isn't? Personally, I didn't have the confidence or the patience to deal with these games. On the other hand you do have the money invested so it might be worth a shot if you can be without the car, just don't be too surprised if it doesn't work out...

[joe_planet]

I called rsworx this morning, they said we cannot restore your tune and we dont deal with ecotune anymore. Also they do not even have the equipment anymore to do it. There is a lot of finger pointing going on! Ecotune claims rsworx did not properly flash the computers. Although how do you fk it up? Either its flashed or it aint. They also claim that they havent been paid by rsworx. Rsworx refused to say what really happened. Rsworx ALSO refused to refund my money. If I send ecu to scotland it will cost $400 between their shop fee and shipping.

I filed a chargeback against rsworx, really tired of being dicked around!!! Especially since i've bought 2 tunes for a sum of 1550!!!