Having consulted the Haynes manual and looked under the bonnet, it would appear that removing the EGR is a simple job and blocking it appears to just need a blanking plate for the hole into the exhaust manifold and then refit the EGR. My question is really around what effect this will have on the car. Do I need to do anything to the solenoid that the vacuum pipe goes to? Will it put a light up on the dash and can I get rid of it? Anyone actually done this?

I should imagine that you will get an EML light, even if you use a blanking plate. The ECU can detect if the EGR has been restricted - it will read a discrepancy on the MAF sensor.

The light will come on your dash and it is more than likely to fail an emissions test on the mot.

Any reason you want to blank it off??

Oh and from jan 2012 an mot test can be failed due to EML on.

Oh and from jan 2012 an mot test can be failed due to EML on.

To quote an MOT tester on here...

The fail lights are/will be, ABS, ESP,SRS, Main beam, rear fog lamp, indicator (if no audible warning), PAS, Hazard and tyre pressure monitoring. The engine management and EPC lights are not and will not be part of the test. EPC is electronic power control and monitors the drive by wire throttle.

The bedding in period is given so that testers can get into the routine of testing the all new items, these new items will come into effect in the spring, possibly on 06/04/12 or 20/05/12. The bedding in reason is an excuse, the real reason is that they cannot test these all new items until the relevant legislation has gone through

I should imagine that you will get an EML light, even if you use a blanking plate. The ECU can detect if the EGR has been restricted - it will read a discrepancy on the MAF sensor.

Is there a MAF on a SDI?. Is the MAF referred to as the Air Mass meter by Haynes, if so, they don't refer to it with regard to the ASY (SDI) engine.

The light will come on your dash and it is more than likely to fail an emissions test on the mot.

Any reason you want to blank it off??

There is no emissions test on a diesel. I want to keep the exhaust crap out of the inlet.

- Yes, the SDI does have a MAF sensor, also known as a Air Mass Meter. It tells the ECU the flow rate of air entering the intake.

- Yes, you are correct about crap in the intake - the soot in the EGR gases will mix with the oil vapour from the CCV to create the dreaded black gunge.

Based on my experience of owning a vRS you have several options available to you -

1.) Disable the CCV system with an 'elephant hose mod'. This will not be detected by the ECU and will remove the oil vapour from the equation - make sure you vent to a catch can or that will be an MOT fail!

2.) You should be able to turn down the EGR function using VAG-COM - you can change adaption values in the engine settings. See My link I have done this on my vRS, but I am unaware if it will work on an SDI. Many people say combining 1.) with 2.) is enough to stop the formation of the gunge in the intake manifold.

3.) If you want to completely disable the EGR using a blanking plate then you will have to remap the ECU to disable the offending fault code that causes the EML to light. Again this can be done on a vRS but I am unsure about an SDI.

I hope this helps.

Oh yes its a diesel. They do still use smoke testers to measure the smoke density. Unsure if an egr would effect this though.

Sounds a lot of effort and money to remove the EGR. Why not clean out the inlet?

- Yes, the SDI does have a MAF sensor, also known as a Air Mass Meter. It tells the ECU the flow rate of air entering the intake.

I am really confused as to whether there is a MAF or not as other threads on here state there isn't one on the SDI.

If there isn't one I presume the ECU will not put a light up.

I am really confused as to whether there is a MAF or not as other threads on here state there isn't one on the SDI.

If there isn't one I presume the ECU will not put a light up.

It surely must have - I'm no expert, but the ECU needs to know how much air is entering the intake to calculate fuel injection measures.

Have a look under your bonnet and follow the intake pipework from the air filter box to the cylinder head. You surely must find one - if not I'm confused lol.

There isn't a MAF on an SDi uses a MAP sensor iirc

Not every engine has a MAF, mine doesn't.

There isn't a MAF on an SDi uses a MAP sensor iirc

Not every engine has a MAF, mine doesn't.

And the next questions are-what is a MAP sensor, where is it and does it put up the EML if the EGR is deleted?

And the next questions are-what is a MAP sensor, where is it and does it put up the EML if the EGR is deleted?

MAP - Manifold absolute pressure http://en.wikipedia.org/wiki/MAP_sensor

The ECU can also use the MAP sensor to test the functionality of the EGR - so EML on EGR delete is more than likely.

MAP - Manifold absolute pressure http://en.wikipedia.org/wiki/MAP_sensor

The ECU can also use the MAP sensor to test the functionality of the EGR - so EML on EGR delete is more than likely.

Does anyone know the exact position with a MAP and the EGR? Will removing the EGR put on the EML on the dash?

Does anyone know the exact position with a MAP and the EGR? Will removing the EGR put on the EML on the dash?

Is there anyone on here that has had an EGR fault on a SDI, did it put the EML light on?