Can i ask why you blanked the vacuum pipe?

I didnt do that on mine, just blanked both ends of the egr pipe, no change to economy.

Is your shudder valve being held closed?

 

After taking the egr completely off and cleaning it, I only blocked the the exhaust as enters the egr.
I gained MPG from doing this.

 

Well..... The shudder valve/butterfly is in the open position until activated by vacuum.

I will put the vacuum pipe back see if there is any difference.

But i ask you this..... If i remove the egr completely where does that vacuum pipe then go?

 

Hi DJaxx
I blanked the egr valve off at the egr end only. I removed and cleaned the valve out as well. I also found that my fuel economy was worse than before I did it. I have taken the blank off and put it back on twice now and monitored the fuel consumption over several fills with it on and off. The fuel economy has always been better with the blank out, :* although the power doesn't seem as good goin up hills.
So I'm very interested to see how it goes for you

 

That is exactly what i find. The power on the up hill is a bit down, but better fuel economy. I am going to put the vacuum pipe for the shudder valve back and see.

Ps: why does our vans not have mpg/kml function on the cluster? That sucks! Is there any way to add such function?

 

Hello folks, I`ve just done away with my EGR altogether and replaced it with an Allard straight through kit (£85). You remove the full EGR and blank off the exhaust, then the vacuum pipes are just tucked away, although I traced mines back all the way to the valves and pulled them off. If there is no differential in the vacuum at the EGR side then the valves will not operate I think.

Anyway the van pulls better and seems to run quieter as well don`t know about the fuel figures as I only did it last week. I also connected up a boost gauge which works pretty well and adds a nice wee touch to the dash board. Van is a 2003 2.5tdi 88bhp AJT.

 

Hey man,

You say that you just pulled off all the vacuum pipes at the N75 controller? Please let me know how this goes as my next step was to remove the egr altogether as well, but rethinking it now.

On a different note..... The boost gauge, please if you don't mind add pic of the gauge in the dash as i wanted to do the sae, but could find a suitable space. I would like steal a bit with my eyes!I:T:

 

Yeah an mpg/kml function would be good but sorry I don't know if they can be fitted. Maybe one of the more auto electrician type guys will see this an give us an answer. It made about 4-5 mpg difference to mine, which I suppose is not a lot but it could mean running out before you find a garage or not. Also better on the wallet over a week/month/year its a good saving I:

 

Softer on the pocket goes without saying!

I do the economical driving!

 

Sorry for the delay in getting back to you DJAXX had to take some pictures, hope they are a help to you.


The first one is how the end result looks.........

This is shows where the clear pipe comes from to feed the Turbo Boost Gauge, the by pas pipe has all the parts needed...

The next two show where I have pulled off the vacuum pipes from the old EGR valve, on the fitting instructions for the bypass pipe they said just to leave them tucked away. I can only assume that if there is no difference in the vacuum pressure from the EGR then the valves for these pipes will not activate. Any way my bus runs spot on with no side effects..

The last one is the Turbo Boost Gauge I fitted in the dash...

Hope these are of use to you, cheers T:

 

Okay, that looks good.

So when you take those 2 pipes off( on the N75/N18) valve it does not affect the fuel economy negativly?

:ILU:

 

Does anyone have any other info to add?

What are the cons to removing the egr?