I did this to mine, then put a new map on with the EGR deleted. On my last car as it was more power modified I had a full EGR delete on there, but after experiencing over run when a turbo failed I was never going to bother with a full delete as I'm not going for power with this.
If these are the same as the VW's then general rule of thumb is 03 reg and before won't get a light, 53 reg is 50/50, and 04 reg onwards will get the dash light.
I did this whilst changing the air filter as removing the air box give you more room to operate.
Deleting the EGR to turbo pipe
To do this you will need two blanking plates that are available from the likes of eGay, but if you work with steel, or like me your dad does then you can just knock some up out of 2mm stainless.
If you plan on making them yourself then order a new gasket for the EGR side of the pipe as this one is more likely to get damaged when removing it, and use it as a template like so
Firstly you need to remove the engine cover that is held on by three 10mm nuts. These are located under the three caps that just clip in
Once off you can clearly see the little fellow that needs to be removed going into the top of the turbo filling it with coke making those VNT nozzles nice and sticky, which in turn leads to limp mode once clogged enough, which in turn leads to a dead turbo
Ideally you want to remove the air box lid as it will give you far more room to work, so it would be a good idea to either do this in line with a filter change to kill two birds with one stone so to speak.
So begin by removing the cold air feed pipe. It is actually two pieces that clip together, and they come out pretty easy
Remove the two screws that you can see above the headlight, then it simply pulls up and out as the top piece just clips into the top of the air box
And out the way they go
There are three little clips that hold the MAF sensor wire to the box that just pull out, two on the left, and one on the rear
Once the wire is free unclip the MAF sensor, and unscrew the clamp that holds the TIP onto the box
Once all these are off undo the two screws on the box itself, then the top is free to pull up and out. Got to like the fact that Audi actually bothered to put a heat shield on there too
Once all this is out of the way the only thing holding the pipe on are two 12mm nuts on the turbo end, and two 6mm allen head bolts on the EGR end.
If you donât have the socket type allen bits donât worry as they are of no use for this job, all you need is a 6mm allen key as there is no access to the inner bolt for the ratchet bits due to the turbo feed pipe.
Once all these are off itâs just a case of wiggling it out of there which is a bit of an art, so take your time so as not to damage any threads on the turbo studs.
You can now attach one to the turbo like so making sure you use the gasket so you donât get any boost leaks
The other one goes under the EGR, but as you can see the plate is thinner than the pipe you have removed
This means that the bolts are too long, but donât worry there is an easy solution in the form of two nuts. You simply put a nut onto each bolt before the plate, and gasket to take up the extra length like so
Then it bolts on under the EGR like so
Then you just have to fit a new filter and refit the air box etc and your all done.
