EGR Removed

depronman

A2OC Donor
Well, not really. There simply is no need for this mod on the BHC and ATL engines. From my post above...


Anyone with a BHC/ATL engine wantig to get rid of the obstruction presented by the EGR valve's internals has always been able to do so. Companies like Allard make a simple straight-through pipe to replace the EGR, as fitted by many members here.

Cheers,

Tom
My understanding is that Allard no longer make the pipe. I may be wrong as it is only what I have picked up from other threads on A2OC


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Vic

Member
And what about the time for the engine to warm up to 90 degrees? Does it takes longer to warm up the engine after EGR removal?
 

Olerype

Member
And what about the time for the engine to warm up to 90 degrees? Does it takes longer to warm up the engine after EGR removal?
For ATL most certainly yes. With EGR enabled, you get cabinheat in 1 minute, EGR disabled it takes 15 times long
 

Menno

A2OC Donor
Just ordered a new ASV/EGR valve, it's going to be attacked with grinding machines and other metal munching devices....... ;)
 

spike

Well-Known Member
I'd also read that Allard are not around now but there are EGR delete kits available for the ATL and BHC engines on Ebay which I've linked a couple of times previously.
For reference, the parts diagm shows the layout of the separate anti shudder and EGR valves

And the ebay kit which replaces the EGR valve (item 1) on the diagm

I've not personally seen the kit so check it out before buying

Also worth considering is the intake manifold, and probably the cylinder head ports will also be coked up with carbon goo so just fitting a nice clean gas flowed EGR valve may not have much effect. That's especially the case if the EGR has not been disabled for most of its life

Cheers Spike
 

timmus

A2OC Donor
My understanding is that Allard no longer make the pipe.
Ah, I was unaware that Allard had stopped making this, though there are plenty of other companies who do. There was one I found on eBay that also included the necessary water pipe to allow the EGR cooler as well as the EGR to be deleted from the BHC/ATL engine.

I suppose the downside of these straight-though pipes is that they also do away with the flying saucer. As mentioned before, the perk of keeping that is that, outwardly, the EGR still appears to be in place. Perhaps a service you could provide, Paul, is to machine out the innards of the BHC/ATL EGR valve but leave the flying saucer in place. To my mind, that would be preferable to a straight-through pipe.

Cheers,

Tom
 

depronman

A2OC Donor
Yes it can be done but bearing in mind that the mot man is not allowed (to the rules) to remove the bonnet of the A2 as it is classed as disassembly of the vehicle then is this really necessary


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Sylvester

Active Member
Yes it can be done but bearing in mind that the mot man is not allowed (to the rules) to remove the bonnet of the A2 as it is classed as disassembly of the vehicle then is this really necessary


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Hi, so I got to finally change the EGR, long story shot, the amazon EGR fits, but the vacuum pipe faces the other way..so the pipe line misses it by an inch..the rest is all good, apart from the top cennector doesn't click on, but stays on. Kind of silly question, is the vacuum line important? Can I do adaptation without it being connected ? It's a 1.4 petrol 75hp. Thanks
 
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timmus

A2OC Donor
Yes it can be done but bearing in mind that the mot man is not allowed (to the rules) to remove the bonnet of the A2 as it is classed as disassembly of the vehicle then is this really necessary
Agreed ... you seemed keen to be able to offer the service for all TDIs, hence the idea. :)
 

ajsellors

A2OC Donor
Hi, so I got to finally change the EGR, long story shot, the amazon EGR fits, but the vacuum pipe faces the other way..so the pipe line misses it by an inch..the rest is all good, apart from the top cennector doesn't click on, but stays on. Kind of silly question, is the vacuum line important? Can I do adaptation without it being connected ? It's a 1.4 petrol 75hp. Thanks
Hi, if you have a 1.4 petrol then your EGR is electric. The small rubber pipe connection is just a breather so goes to a short hose with an air filter on the end. That's all it is. The important connections are the two sides to the lower block of the valve where it attaches to the engine (the exhaust side) and the front connection to the metal pipe that goes to the air intake. The adaption just measures the position of the valve electrically so strictly speaking it doesn't actually have to be attached to the engine to do this, just plugged in :)

regards

Andrew
 

Sylvester

Active Member
Hi, if you have a 1.4 petrol then your EGR is electric. The small rubber pipe connection is just a breather so goes to a short hose with an air filter on the end. That's all it is. The important connections are the two sides to the lower block of the valve where it attaches to the engine (the exhaust side) and the front connection to the metal pipe that goes to the air intake. The adaption just measures the position of the valve electrically so strictly speaking it doesn't actually have to be attached to the engine to do this, just plugged in :)

regards

Andrew
That's great, thanks Andrew. What I did is to cut a spray hose, cut the old EGR connector to the hose, fit the plastic hose in the new EGR bottom, and the end with the old EGR bits attached to the small plastic hose I plugged them together. I hope it makes sense, it's now attached but like 10 inches longer. But if not necessary even better :) Thanks
 

spike

Well-Known Member
Regarding the MOT and bonnet removal, the test station I've used for years always asks for the bonnet to be taken off. Always happy to do this but did ask about the 'dismantling' issue so he referred to this section of the manual.
.
Bonnets, engine covers, luggage compartments, access flaps and passenger compartment doors must be opened when it's necessary to inspect testable items. If for example a bonnet, door or access panel designed to be easily opened can’t be opened, so preventing access to a testable item, you must either abandon or refuse to carry out the test.

In his opinion the A2 bonnet is designed to be opened / removed without tools so the statement applies.

Cheers Spike
 

Sylvester

Active Member
Hi, if you have a 1.4 petrol then your EGR is electric. The small rubber pipe connection is just a breather so goes to a short hose with an air filter on the end. That's all it is. The important connections are the two sides to the lower block of the valve where it attaches to the engine (the exhaust side) and the front connection to the metal pipe that goes to the air intake. The adaption just measures the position of the valve electrically so strictly speaking it doesn't actually have to be attached to the engine to do this, just plugged in :)

regards

Andrew
So the egr adaptation does nothing but error. I can run it for hours, changing between basic settings and measure block, but nothing. The egr click when adaptation run, but always goes back to error and the egr is getting really hot after that many tries. I don't know what's going on..I fix an issue and 2 appear's..like now with the hand break, but I check another topic for that..
 

depronman

A2OC Donor
Regarding the MOT and bonnet removal, the test station I've used for years always asks for the bonnet to be taken off. Always happy to do this but did ask about the 'dismantling' issue so he referred to this section of the manual.
.
Bonnets, engine covers, luggage compartments, access flaps and passenger compartment doors must be opened when it's necessary to inspect testable items. If for example a bonnet, door or access panel designed to be easily opened can’t be opened, so preventing access to a testable item, you must either abandon or refuse to carry out the test.

In his opinion the A2 bonnet is designed to be opened / removed without tools so the statement applies.

Cheers Spike
This is obviously an area of the mot which is open to interpretation
My man mot always ask if I will remove the bonnet for him which I always do. I did ask what he would do if I refused and he said continue the test and pass fail as to what he could see but would put an advise on the pass stating the bonnet was not removed so I guess it covers him
To be honest the owl mot is a farce and has been since they have been trying to align it with the European test over the last 15 plus years



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Sylvester

Active Member
Hi, if you have a 1.4 petrol then your EGR is electric. The small rubber pipe connection is just a breather so goes to a short hose with an air filter on the end. That's all it is. The important connections are the two sides to the lower block of the valve where it attaches to the engine (the exhaust side) and the front connection to the metal pipe that goes to the air intake. The adaption just measures the position of the valve electrically so strictly speaking it doesn't actually have to be attached to the engine to do this, just plugged in :)

regards

Andrew
Hi, so I gave up on the egr adaptation for now as I'm busy with work, it gave nothing but adp run-error for hours, no matter what I tried. The bottom clicks when adaptation is ongoing but result always ends with error.
I put the old one back and that seems working okay. Other issues were with new egr, the top connector is shorter then the old one so doesnt click on the safely bit, fitting is not smooth either, and the small black rubber hose, the breather, didnt reach the egr as the pipe faces the opposite way...I've had a look at other egr-s on the net and almost all look what I bought, and after quick search only aliexpress in US and maxpeed. in uk has the one look like my old one.

Old one looks like this, less common and found on maxpeedingrods:

New from amazon which doesn't fit correctly and doesn't want to adapt, most A2 egr online orders look like this:

Any idea why is there 2 different ones? Thanks
 
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spike

Well-Known Member
Ref Item 13 on the parts list, depending on model year there are 3 versions 503M, 503R and 503T
In your first link it lists the 503M and in the second, the 503R and 503T versions Can only assume the firs one is not interchangeable with the second pair

Cheers Spike
 

Sylvester

Active Member
Ref Item 13 on the parts list, depending on model year there are 3 versions 503M, 503R and 503T
In your first link it lists the 503M and in the second, the 503R and 503T versions Can only assume the firs one is not interchangeable with the second pair

Cheers Spike
Hi Spike, that's confusing for sure and doesn't help looking for parts, as most seller just says for which engine, years usually like 2000-2005. I message the seller and let them know. Thanks
 

Sylvester

Active Member
So the eBay seller got back to me about the wrong type of egr sent, and looks like I can get a replacement, but there's an issue.
I'm going on holiday in a few days and the new egr won't get here in time. I'm driving to the airport and it's like 2.5 hours away.
I haven't driven that much since I got the A2 in march and the eml comes on when driving over 50-60mph for a bit, which will definitely happen on the way there. So the question, because I will look at that light for probably 2 hours at least, how safe is that keep using it? When I got the car the eml was on for months, the owner thought it was there as you needed a special audi softwear to delete it, after the throttle body cleaning. Later when I did vag check, turned out was due the egr insufficient flow. Lights comes on sometimes and I just delete it, till I get the new egr.

Can I use the car without thinking it might break down, or giving me flashing light or so, after continues use with the eml light on. The light was on for the same reason for months before and drove well, but it's kind of nerve wrecking and I thought I better ask. I leave the car at the airport for a week and thdn drive back as well. Ill have the vag in car to delete the light later. Thanks
 
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Catnip64

A2OC Donor
Using VCDS to clear the eml does just that, it resets the fault code, the underlying issue still remains.
So if you have used the car previously with the same fault for months, then a 2 hour journey is unlikely to cause any further problems.
You could always set off earlier and keep below 50mph....
 
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