An actual EGR Delete for All 3.0 TDI Gen2 Engines (CPNB / CNRB / CPNA)

[kolll]

Hi.
204k.
Yes.

mine is at 185k no valley leak yet

 

[commedeschatons]

mine is at 185k no valley leak yet

Thats... beyond lucky.

 

[TurboABA]

Thats... beyond lucky.

Km not Miles.... just in case you missed that.

 

[oilhammer]

Lucky... only in Metric.

 

[TurboABA]

Or more than likely, just unaware as of now.... since you really have to get in there with a borescope to see it, and I suspect that if you have your vehicle serviced at the dealers, they just top off the coolant during service and don't say a thing. Mine took a full 4 years of ownership without the coolant being topped off to notify me of low coolant... which caused me to go looking for evidence in the vee.

 

[commedeschatons]

Or more than likely, just unaware as of now.... since you really have to get in there with a borescope to see it, and I suspect that if you have your vehicle serviced at the dealers, they just top off the coolant during service and don't say a thing. Mine took a full 4 years of ownership without the coolant being topped off to notify me of low coolant... which caused me to go looking for evidence in the vee.

With that many miles, I'd anticipate smelling it rather than having to look. Ive seen cars with 110-120k miles valley filled to the brim with coolant, even with fried alternators from coolant pour down the front of engine at stops

 

[kolll]

Or more than likely, just unaware as of now.... since you really have to get in there with a borescope to see it, and I suspect that if you have your vehicle serviced at the dealers, they just top off the coolant during service and don't say a thing. Mine took a full 4 years of ownership without the coolant being topped off to notify me of low coolant... which caused me to go looking for evidence in the vee.

no no

the valley is dry - 100%
checked

 

[kolll]

Thats... beyond lucky.

its in km's but still good result or luck
looking to get complete delete and bypass - are all components available from you?

 

[commedeschatons]

its in km's but still good result or luck
looking to get complete delete and bypass - are all components available from you?

Yep everything in stock

 

[UgoTdi]

If that's the issue, the delete approach won't fix it.... time will tell

Good point the easy places like the housing needs to be looked at first.

 

[commedeschatons]

It appears the GDM kit has a major design flaw which i remembered as i was working on something on intermediate flange.

Because of their "unique" design, they are basically short circuiting the engine block coolant return to the radiator with the EGR coolant loop back to the thermostat.

This is their intermediate flange Below. In the stock application, there is a divider that splits the two paths. One goes into the cylinder head, one goes out.

In GDM's, there is no divider between the circuits that go into the cylinder head and OUT of the cylinder head to the egr cooler. . If you look at the coolant circuit diagram, they essentially molested the flow and the engine block circuit will not flow correctly as it is merges the circuits going to radiator and and egr circuit going to the thermostat.

In below diagram, egr cooler is item#8, bypass valve is #9. If we short these together the coolant circuit is ****ed.

They could have avoided this in design potentially, but it would have been difficult. They may have known and chose chose to ignore it so they would have an easy place to cross drill and plug. I find it hard to believe you would see two holes that are separated on both the block and the flange and not take a second to think about why they are seperate.

Of course it is always funny to talk about this product because it both existed and didn't depending on when you talked to them if you managed to, as their business principles are essentially heisenberg's uncertainty principle.

Anyways you should never buy GDM's anything if you value your sanity, money, or your car. the end. It turns out they did us all a favor by being impossible to do business with.

 

[BroDave]

This is a great thread. I have learned a ton from those who have gone before. Just found out today I have a plugged exhaust filter. VW said $3-4000 minimum. Only real answer is to do a complete delete as I see it (egr, egr cooler, exhaust filter, and def system). I hold the distinction of being rather mature and don't get what has to happen to the computer to make all of the codes go away and for the engine to run again. In limp mode now.

 

[TurboABA]

Start a discussion where you provide your details with scan results, and someone will help you.

 

[BroDave]

VW did not give any actual scan results just said the exhaust filter was plugged. My scan tool is an obd 2 and is about 20 years old. Should I get a VW compatible tool and if so what one?

 

[TurboABA]

What do you think? Do you want to blindly throw parts at it? Do you want others to blindly suggest parts that you can throw at it?

 

[BroDave]

TurboABA
I've read this entire thread before joining this forum and have seen that you have significant experience and knowledge that you freely disseminate. I would recommend however that you would be even more successful in your correspondence if you would maintain a respectful tone. I asked what tool would you, or other members of the forum recommend?

 

[TurboABA]

Noted

 

[RexNICO]

VW did not give any actual scan results just said the exhaust filter was plugged. My scan tool is an obd 2 and is about 20 years old. Should I get a VW compatible tool and if so what one?

The go to scan tool among the VW/Audi owners I know is the Ross-Tech VCDS. The connector/cable for your era car is VIN limited, so unless you own multiple VW/Audi’s or have friends that do, a 3-VIN cable should suffice. Thanks

 

[BroDave]

The go to scan tool among the VW/Audi owners I know is the Ross-Tech VCDS. The connector/cable for your era car is VIN limited, so unless you own multiple VW/Audi’s or have friends that do, a 3-VIN cable should suffice. Thanks

Thank you. That is most helpful.

 

[av8r]

...bump

 

[commedeschatons]

...bump

what are you bumping for XD

 

[commedeschatons]

well since im here ill drop some new pics of the 1-pc intermediate flanges.
1:1 match with stock hose barb including cutout for hose seating. CNC guys absolute killed it.

 

[craigldavis]

You can do it piecemeal with malone no problem. you only pay the difference in cost on tunezilla.
thats exactly what i did on my touareg. I had egr off only. then my adblue ****ed up and i did egr+adblue off.
Then i did dpf delete and did everything off.

swirl flap doesn't matter.

Did you need to disconnect anything on the EGR Cooler or EGR system with the tune disabling EGR for the time period before you did the block-off and actual bypass?

 

[commedeschatons]

Did you need to disconnect anything on the EGR Cooler or EGR system with the tune disabling EGR for the time period before you did the block-off and actual bypass?

No.