Morning folks,

Fitted an EGR blanking kit the other day to my '06 TDV6 but haven't removed the butterfly valve yet. Do I need to remove it or will it be fine leaving it in place?

Many thanks, Jem. 2006 Buckingham Blue TDV6 HSE

It is advisable to remove it, as when closed, there will be a huge depression in the intake system after the butterfly. This is less than ideal

Best to remove it, and keep fresh air coming into the engine at all times

Can I ask, whilst Disco Mickey is around, what is the benefit of EGR blanking?

Clearly it saves replacing faulty parts, and avoids some oil contamination, but does it make much difference to performance, given that EGR normally only works at light throttle?

I ask in case my car would benefit.

And another thing, is it necessary to change (and flush) the transmission fluid, and at what interval?

Thanks
Adam..

You will only notice a difference in performance, if you have an EGR issue

If the valves are functioning as intended, you won't see any difference in blanking. However, if the valves are blanked before you have an issue, you will never know about it

As well as being much, much cheaper

It is vital to flush the gearbox oil, to ensure all the old oil is removed from the gearbox, valve block and torque converter. ZF, who manufacture the gearbox, say it should be flushed between 50-75k miles, depending on use

Thank you DM. Great advice as always.

Do you know if the LR agents offer this service? I know a local auto trans specialist, so will ask them too.

Thanks again
Adam..

Right,

After the sound advice above I removed the butterfly valve this afternoon. Really easy actually. I just did one thing in addition to the how to guide in that I removed the bolt holding the butterfly housing to the top of the engine and also disconnected the left hand egr pipe at the join near the top. This allowed me to pivot the complete housing upwards slightly where it branches into the Y pieces, its a bit stiff but I moved it about an inch and a half which gave me easy access to the fourth torx bolt. Other than that, piece of pi**!! Can't claim all the credit though, found this little trick on a 4x4 dealers website where I had bought the blanking plates from

Butterfly now removed and engine free to breath nice fresh air.

Cheers, Jem. 2006 Buckingham Blue TDV6 HSE

Do you have any pics or a link to the instructions? I blanked off my egr valves a couple of years ago but didn't remove anything, am a bit concerned after reading what Mikey has said.....

Removed mine completely including the pipes that we're no longer needed. I'm not Fat. RRS TDV6 HST.

What if any are the downsides of blanking off the EGR?

If as suggested here there are improvements, why do they fit one in the first place?

i removed everything on mine, egrs,pipes,cat,centra box insides,rear exhaust boxes and it goes well sounds great and better mpg

I think they fit one because it helps reduce polution and gasses or something. But these build up, clog up and break and when they break are very costly. I'm not Fat. RRS TDV6 HST.

oldcro wrote:

What if any are the downsides of blanking off the EGR?

If as suggested here there are improvements, why do they fit one in the first place?

As above, they're fitted to reduce SO2 and NOx emissions - In the process, feeding filth into your engine. On (later) DPF models, they are used to control the exhaust gas temperatures for the DPF regeneration cycle too.

Blanking them will raise the EGTs a bit, BUT, when under load, they should be fully closed anyway.

 Visiting from DISCO3.CO.UK
2006 Discovery 3 TDV6 Auto HSE Zambezi Silver

Thanks for the replies folks, now it's clear why it's done.

When I removed the EGR's I fitted a K&N air filter and a Hiclone Air Swirling device. The effect was very good. Have since added a Allisport Intercooler. Result better fuel consumption and Performance.

Fritz, just to let you know, such oiled filters can (and have been known to) cause damage to the MAF sensor. It's often said that the best thing is just to change the standard air filter more often.

I have the Allisport IC too though (good but the RS500 install is cheaper).  Visiting from DISCO3.CO.UK
2006 Discovery 3 TDV6 Auto HSE Zambezi Silver