Any Negatives To Blanking/Bypassing EGR On TD5?

Tom591 · Oct 30, 2017

I am currently fixing up the (relatively) minor problems on 2004 TD5 Defender.

I am keeping the car entirely stock, as I have no interest in extra power or mpg.

I am, however, very interested in the reliability and longevity of the engine, and was wondering if there are any negatives to blanking/bypassing the EGR valve?

Does the cleaner air cause hotter combustion? Is it more likely to cause future exhaust manifold warping or bolt shearing? Do other component or sensors rely on the mix of clean and recycled exhaust air? Does the ECU get confused by the bypass?

I think I know the answer, but any opinions would be greatly appreciated.

jamesmartin · Oct 30, 2017

blanking will be better for your engine but worse for emissions, putting hot gasses through the inlet manifold creates a lot of black sludge,once blanked inlet will remain clean but oily

Wimblowdriver · Oct 30, 2017

Tom591 said:
are any negatives to blanking/bypassing the EGR valve?

Very topical at the moment, government tightening up the rules on diesel emissions. You could find yourself unable to obtain an MOT next year if you remove or tamper with emissions control devices. The next big money spinner could be refitting of EGR's, DPF's, cats etc. Don't know the rules in Portugal however?

raywin · Oct 30, 2017

Took mine off a couple of years ago and it runs fine there are no leaps in performance or mpg but when I took it off I removed the manifold and the muck in there was amazing I jet washed it out and 're fitted it.

lynall · Oct 30, 2017

It wont do any harm at all, most people blank their egr not so much for power but to either fix a problem with the set up or prevent future problems

bankz5152 · Oct 30, 2017

Wimblowdriver said:
Very topical at the moment, government tightening up the rules on diesel emissions. You could find yourself unable to obtain an MOT next year if you remove or tamper with emissions control devices. The next big money spinner could be refitting of EGR's, DPF's, cats etc. Don't know the rules in Portugal however?

Half the reason I've kept my EGR and Cat/DPF pipe. Though on the TD5 if the acoustic cover is fitted you can't see most of the EGR system and the MOT can't remove it to inspect!

Jam1 · Oct 30, 2017

bankz5152 said:
and the MOT can't remove it to inspect!

Yet!

lightning · Oct 30, 2017

The TD5 was not fitted with an EGR valve in a lot of export specifications so Land Rover clearly did not see deleting it as detrimental in any way.

ogb · Oct 31, 2017

A hot topic. I read in the papers yesterday that as of May next year a car will fail an Mot test if the "DPF" has been removed or tampered with. My understanding is that the EGR valve as fitted to, for instance, a 300Tdi isn't in that category so we'll be OK if it's been removed. Is this true?

blue beasty · Oct 31, 2017

ogb said:
A hot topic. I read in the papers yesterday that as of May next year a car will fail an Mot test if the "DPF" has been removed or tampered with. My understanding is that the EGR valve as fitted to, for instance, a 300Tdi isn't in that category so we'll be OK if it's been removed. Is this true?

Yes for now but it's not unreasonable, given the present concern about emissions, that rules will change and cars not fitted with emission control devices that were fitted by the manufacturer will fail.

Any Negatives To Blanking/Bypassing EGR On TD5?

Tom591

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jamesmartin

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Wimblowdriver

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raywin

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lynall

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bankz5152

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Jam1

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lightning

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ogb

Active Member

blue beasty

Leaks an prone to bits dropping off

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