Egr blanking plates

[Ibiza2000]

Probably the only one on here not to have this ATM lol but I'm after a simple step by step guide or for someone to tell me on blanking out my egr, I'm pretty sure it's half the problem to my turbo issue, I brought a blanking plate from ebay and tackled it yesterday however I encountered a few mishaps

I have a alh engine code 1.9tdi 03 plate (Leon of course)

My first problem is the two screws on the bottom of the egr valve are pretty non accessible and tight as hell to the point where the ont thing the fits down the gap is a Allen key, and I can't get the leverage or space to losen the bolts...

Secondly, what do I need if anythin additional? There's a vacum pipe and iv heard about a cooling pipe that is needed additionally? I dot see where it'd go tho?...

Thanks in advance everyone

 

[RaviR50]

+1, i'm looking to blank off mine to stop some of the smoke and ive heard it gives a bit more power. I dont know where to start though lol

 

[cleverspoon]

iv turned mine down in vagcom......cant honestly say its made a difference......but it makes a diff reading different sensors on vagcom. i read some where that turning it down is as good as blanking......doesnt give any issues later on with eml etc

 

[Ibiza2000]

I'm pretty sure turning it down just defeats the object of blanking tho right? As its still active and the little disc is still active and if there's a soot build up then it would struggle to work this still cause and effect on a turbo?

Some must have a simple guide? It would be a massive help plzzzz

 

[Brettyboy]

Wouldnt blanking the vac hose to the egr do the same job ?

 

[Muttley]

Plugging the vacuum hose to the EGR actuator will prevent EGR operation. Some later ECU's seem to be able to detect this and throw up the CEL.

Blanking plates will prevent the flow of exhaust gas no matter what the position of the EGR valve. This allows the valve to move, and so any position sensors (found on more modern cars such as the Leon 2) still register movement and don't cause the CEL to light.

The same versions of the Leon 1 ECU that can detect EGR gas flow will also complain if a blanking plate is installed. To get around this, you can buy a blanking plate with a hole in it that reduces the exhaust gas flow to a minimum.

Turning down the EGR dosing using VCDS has a similar effect to installing a blanking plate with a hole, except that as the ECU is being instructed to reduce the EGR flow, no CEL will come up. I think the reduction in exhaust gas dosing is more effective than a plate with a hole, but haven't seen any detailed comparisons.

What we're aiming to do is reduce the amount of carbonised sludge in the inlet from the EGR+crankcase vapours mixing and reacting. The TDI 150 and the 2 litre PD engines have a water-cooled EGR system which gives additional help. Adding a catch can to the PCV system will also help.

You won't get more power at the top end from defeating the EGR, but you can notice an improvement in mid-range power, where the EGR mainly operates. EGR is closed at full throttle in any case. You should notice an improvement in fuel economy and a reduction in smoke out the back during heavy acceleration.

 

[cleverspoon]

Mutley, iv read a lot if your posts....your like the encyclopedia of leon tdi...thumbs up!!

When i turned my egr down...i tried to input the new value as 33768(i think) but it would only go to 33678(from memory)....is this normal for a 2005 fr tdi? I cant say iv noticed a lot of difference, i did on the vagcom values though, but as long as it helps keep the inlet clean then im happy!

 

[Bondiblu]

When i turned my egr down...i tried to input the new value as 33768(i think) but it would only go to 33678(from memory)....is this normal for a 2005 fr tdi?

Yes, thats normal, my MK4 Cupra TDI was the same.

 

[Muttley]

Yes, that's turned down as far as it will go, that's what I did with mine. 33628 is the minimum setting it will accept.

EGR flow is shut down to almost nothing - and since the ARL engine has a water-cooled EGR system the small amount of gas will be well cooled and much less likely to burn the oil vapour in the inlet charge. All we need to do now is make sure the inlet manifold is cleaned of any existing obstruction. I say we because I haven't done that on mine yet either, and I got it at 80K, so it's bound to have some blockage in there.

 

[cleverspoon]

ideal.....cleaning the inlet manifold is on my list too.....but its quite a way down the list, only just had the eibachs fitted which have been sat in the box on my bedroom floor for 6 months (i have tooo many hobbies). Ive only done 58K so hopefully its not toooo bad, but i have seen a pic of a choked inlet manifold at 50K....it drives ok so have no worries.

much quicker and easier to turn down than fitting blanking plate etc...and am i right in thinking the anti shudder valve is kept and working?

 

[Bondiblu]

http://www.seatcupra.net/forums/showthread.php?t=278275&highlight=bondiblus my Ibiza cupra TDI at 50K, not too bad, but not ideal. You'll only lose the ASV if the EGR is replaced with a delete pipe.

 

[Muttley]

Yes, the Anti-shudder valve is worked by a separate valve, N239 and an actuator on the side of the EGR/ASV pipe.

 

[Ibiza2000]

If the inlet manifold needs cleaning then the egr has to come off at the top end doesn't it? And when u re fit it u can pop the blanking plate in (poor mans way!) touch wood my eml hasn't poped up yet although it may should have as iv disconnected my n75 and running off default values - I'm pretty sure my eml has been removed or bypassed somehow

Does anyone know how to get the top end of the egr off? Im not too keen to get down as far as the intake manifold as this would mean gettin in under and removing as like a turbo? Not sure as iv never done all I k ow is I got the dreaded negative charge deviation an my turbo is constantly goin into limp mode I can't take it anymore just trying to eliminate each option, MUtTLeY you've helped me before on this issue a few months back and I'm only just getting round to it, I work some shady work patterns lol

If I can eliminate this egr problem then I can concentrate on a turbo issue as I'm pretty sure any electricals would pop up on a vag com right?

 

[Ibiza2000]

Just bringin this back up anyone know how to free the egr up on a alh engine?

 

[louma84]

can i turn down my egr on my leon tdi 150 using vcds-lite? or do i need the full version?

if so how do i do it?

 

[cleverspoon]

http://www.seatcupra.net/forums/showthread.php?t=287688

Not sure if you need the full version or not.

 

[Muttley]

You need registered VCDS-Lite as a minimum - free VCDS won't do it.

 

[xpro]

Egr valve also acts as a turbo dumpvalve, as it releases excess pressure from turbo back into exhaust. By blanking it fully the excess pressure on overrun has nowhere to go and its bouncing back of the blades in the compressor which in long run will do harm to your turbo.

On mine i have a new gasket installed with smaller diameter which can be got directly from VW dealer and i have it turned down via vcds.
Thanks

 

[Bondiblu]

Egr valve also acts as a turbo dumpvalve, as it releases excess pressure from turbo back into exhaust. By blanking it fully the excess pressure on overrun has nowhere to go and its bouncing back of the blades in the compressor which in long run will do harm to your turbo.

On mine i have a new gasket installed with smaller diameter which can be got directly from VW dealer and i have it turned down via vcds.
Thanks

And where did you read that?

 

[xpro]

And where did you read that?

I didnt read it. VNT turbo doesnt have a wastegate and Egr is used instead to vent the excess pressure back into the exhaust.
What do you think happens with turbo boost after you close the throttle?