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blocking the EGR
- Thread starter masterfrodo
- Start date
I’m guessing you have a diesel engine, if so it would depend which one you have.
The older TDI 110 AHF engine there are a few options. You can just unplug the wires from the EGR controlling valve above the engine on the firewall. That’s what I’ve done with mine around 10 years ago, garages have occasional reconnected it which I haven’t noticed for a while. You can take the vacuum pipe off the actual EGR valve and stick a screw or golf tee in then reattach the vacuum pipe to the EGR valve. Or you buy a EGR delete kit that has the blanking plate for the exhaust manifold and a replacement section for the actual EGR valve.
I think you can do much of the above on the newer PD engines, but it’ll turn on your check engine light. Which you either live with or use VCDS to switch it off. I think you can use VCDS to turn down the EGR operation to a minimum without having to physically fiddle under the bonnet.
To be honest I haven’t seen any significant improvement in my fuel consumption. Most people disable the EGR to stop it getting clogged up with gunk. The only downside I’ve noticed is the engine taking longer to warm up in cold weather.
If you need to see what’s involved in an EGR delete there’re plenty of videos on youtube showing it.
The older TDI 110 AHF engine there are a few options. You can just unplug the wires from the EGR controlling valve above the engine on the firewall. That’s what I’ve done with mine around 10 years ago, garages have occasional reconnected it which I haven’t noticed for a while. You can take the vacuum pipe off the actual EGR valve and stick a screw or golf tee in then reattach the vacuum pipe to the EGR valve. Or you buy a EGR delete kit that has the blanking plate for the exhaust manifold and a replacement section for the actual EGR valve.
I think you can do much of the above on the newer PD engines, but it’ll turn on your check engine light. Which you either live with or use VCDS to switch it off. I think you can use VCDS to turn down the EGR operation to a minimum without having to physically fiddle under the bonnet.
To be honest I haven’t seen any significant improvement in my fuel consumption. Most people disable the EGR to stop it getting clogged up with gunk. The only downside I’ve noticed is the engine taking longer to warm up in cold weather.
If you need to see what’s involved in an EGR delete there’re plenty of videos on youtube showing it.
The hose to block for the actual EGR valve operation is the one on top of it
The hose that attaches on the backside of the EGR is for the ASV (anti-shudder valve)
Sent from my SM-G930F using Tapatalk
The hose that attaches on the backside of the EGR is for the ASV (anti-shudder valve)
Sent from my SM-G930F using Tapatalk
Well, I went ahead and blocked the EGR pipe, and just as I thought, the fuel consumption is affected
Before I had my faulty EGR valve changed I was regularly getting 50+ mpg, but after the EGR valve was replaced I struggled to get better than 46mpg average even on a 600 mile round trip from Cornwall to London
I do a very regular journey, and since changing the valve that journey has gotten me a constant 46mpg average. Now I have blocked the EGR pipe I have driven this journey a few times, and I am now getting 51-52mg
So, the EGR valve might reduce emissions, but it also makes the car use more fuel
I guess the next step is to put the pipe back on and get the EGR mapped out. I know remappers say you get better fuel consumption when the car is remapped, and I now think that a lot of that is down to the fact that the EGR is mapped out
As a side note, I was noticing a very slight but noticeable hesitation at about 1500rpm before I blocked the EGR. That has now gone, so it seems like that might have been the EGR kicking in
Before I had my faulty EGR valve changed I was regularly getting 50+ mpg, but after the EGR valve was replaced I struggled to get better than 46mpg average even on a 600 mile round trip from Cornwall to London
I do a very regular journey, and since changing the valve that journey has gotten me a constant 46mpg average. Now I have blocked the EGR pipe I have driven this journey a few times, and I am now getting 51-52mg
So, the EGR valve might reduce emissions, but it also makes the car use more fuel
I guess the next step is to put the pipe back on and get the EGR mapped out. I know remappers say you get better fuel consumption when the car is remapped, and I now think that a lot of that is down to the fact that the EGR is mapped out
As a side note, I was noticing a very slight but noticeable hesitation at about 1500rpm before I blocked the EGR. That has now gone, so it seems like that might have been the EGR kicking in
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