swatts70 · Jun 16, 2018

It's easy to tell whether a disco 2 came out of the factory with a cat fitted by checking the vin. The 8th digit is either a 8 for cat fitted or 9 for no cat fitted, as per Rave CD. Whether mot testers will use or know this depends on individual testers I suppose. EGR valve missing is a fail. No removal of covers on vehicle to check if present though. Unfortunately if you look at front of engine where EGR should be you can just see where it is or isn't, just visible even with engine cover in place. Well you can on my 2002 td5.
I have removed my cat, centre box and egr plus had ECU remapped
I'm still to decide whether to refit any of the above for this years mot in September, considering it has always passed with flying colours,(same friendly garage for past 10 years)
Not worried about smoke as no DPF fitted to a td5.

FIREAPPLIANCEMAN · Jun 17, 2018

I HOPE THAT YOU MEMBERS WHO HAVE MOTS IN THE NEXT FEW MONTHS AND WHO HAVE REMOVED EGR VALVES
will tell us of the outcome with details of the year and model and what the tester had to say. . and if you refitted valve what difference
did it make to your emissions were they higher the same or lower and if you lost any power as I feel that the EGR valve suffocates
the engine. cuts the power . heightens the emissions and was only fitted due to EU across the board rules, without any tests how can
politicisation rule on something they know nothing about they are not engineers and in some case know nothing of politics ,
any engineer know that the better an engine breaths the better it performs and it need air lots of clean cold air , not hot dirty air
they think that because an aircraft has after burners and goes faster that cars are the same, they are nothing like each other.

kenbro · Jun 19, 2018

FIREAPPLIANCEMAN said:
I HOPE THAT YOU MEMBERS WHO HAVE MOTS IN THE NEXT FEW MONTHS AND WHO HAVE REMOVED EGR VALVES
will tell us of the outcome with details of the year and model and what the tester had to say. . and if you refitted valve what difference
did it make to your emissions were they higher the same or lower and if you lost any power as I feel that the EGR valve suffocates
the engine. cuts the power . heightens the emissions and was only fitted due to EU across the board rules, without any tests how can
politicisation rule on something they know nothing about they are not engineers and in some case know nothing of politics ,
any engineer know that the better an engine breaths the better it performs and it need air lots of clean cold air , not hot dirty air
they think that because an aircraft has after burners and goes faster that cars are the same, they are nothing like each other.

My 2005 x 166,000 mile TD5 Defender LWB XS, or whatever it is, went for MOT on 8th June.
No EGR, no Cat. and smokes on acceleration in each gear.
Government figures suggest 3 K (1/m) limit In emissions test. (This for vehicles regd. before 2008.) vehicles with DPF have a 1.5 limit. I think.
My results:
Test 1, 2.82. Temp; 67/67
Test 2, 2.74. Temp; 60/62
Test 3, 2.90. Temp; 58/57
Average reading 2.82 1/m Pass.
Took mine in 7 weeks early as was worried it wouldn’t pass and I would have taxed it 4 weeks earlier and potentially wasted the money, as I wasn’t going to invest big money to fix it if it failed.
Regards,Ken.

Brown · Jun 20, 2018

kenbro said:
My 2005 x 166,000 mile TD5 Defender LWB XS, or whatever it is, went for MOT on 8th June.
No EGR, no Cat. and smokes on acceleration in each gear.
Government figures suggest 3 K (1/m) limit In emissions test. (This for vehicles regd. before 2008.) vehicles with DPF have a 1.5 limit. I think.
My results:
Test 1, 2.82. Temp; 67/67
Test 2, 2.74. Temp; 60/62
Test 3, 2.90. Temp; 58/57
Average reading 2.82 1/m Pass.
Took mine in 7 weeks early as was worried it wouldn’t pass and I would have taxed it 4 weeks earlier and potentially wasted the money, as I wasn’t going to invest big money to fix it if it failed.
Regards,Ken.

That's reassuring. I put my no-cat, no-EGR 2006 model TD5 in just prior to the rule change and I'm pleased to say it passed and wasn't smoky at all - readings less than 1.5. The garage said the new emission control rules probably wouldn't affect me in future, so we shall see what happens next year.

300bhp/ton · Jun 20, 2018

FIREAPPLIANCEMAN said:
I HOPE THAT YOU MEMBERS WHO HAVE MOTS IN THE NEXT FEW MONTHS AND WHO HAVE REMOVED EGR VALVES
will tell us of the outcome with details of the year and model and what the tester had to say. . and if you refitted valve what difference
did it make to your emissions were they higher the same or lower and if you lost any power as I feel that the EGR valve suffocates
the engine. cuts the power . heightens the emissions and was only fitted due to EU across the board rules, without any tests how can
politicisation rule on something they know nothing about they are not engineers and in some case know nothing of politics ,
any engineer know that the better an engine breaths the better it performs and it need air lots of clean cold air , not hot dirty air
they think that because an aircraft has after burners and goes faster that cars are the same, they are nothing like each other.

Maybe someone more familiar with engineeering should have written your post tbh.

EGR, or exhaust gas recirculation is a means of introducing an inert gas to the combustion cycle to reduce Nox emissions at peak combustion temperatures. It works by means of a valve so that it only operates at part throttle and is inactive at full throttle. And therefore has no affect on peak power or performance.

So there has indeed been much testing, science and proof. And comparing it to an after burner is somewhat ridiculous.

FIREAPPLIANCEMAN · Jun 20, 2018

May be on certain cars not every model or make maybe on petrol engines but i doubt on land rovers . If you are so sure of your facts .show me, and tell me why my omissions have. come down and i get more mpg since the egr valve was removed and why there was no thick gooie gunge in the inlet manifold. the book say my omissions should be 263 the mot read out was 60 so there is my proof and the reference to after burners was how i thought the politicians were linking it, I stated that the two were nothing like each other, i was an engineer till i retired and worked on auto engines mainly diesel . but thank you very much for your comments

blue beasty · Jun 20, 2018

FIREAPPLIANCEMAN said:
May be on certain cars not every model or make maybe on petrol engines but i doubt on land rovers . If you are so sure of your facts .show me, and tell me why my omissions have. come down and i get more mpg since the egr valve was removed and why there was no thick gooie gunge in the inlet manifold. the book say my omissions should be 263 the mot read out was 60 so there is my proof and the reference to after burners was how i thought the politicians were linking it, I stated that the two were nothing like each other, i was an engineer till i retired and worked on auto engines mainly diesel . but thank you very much for your comments

EGRs are fitted to reduce nox emissions, in the UK we don't at present test for Nox.

Removal of any emissions control device is now an automatic fail and I doubt LR have an exemption.

300bhp/ton · Jun 21, 2018

FIREAPPLIANCEMAN said:
May be on certain cars not every model or make maybe on petrol engines but i doubt on land rovers . If you are so sure of your facts .show me, and tell me why my omissions have. come down and i get more mpg since the egr valve was removed and why there was no thick gooie gunge in the inlet manifold. the book say my omissions should be 263 the mot read out was 60 so there is my proof and the reference to after burners was how i thought the politicians were linking it, I stated that the two were nothing like each other, i was an engineer till i retired and worked on auto engines mainly diesel . but thank you very much for your comments

Are you an engineer who is unable to do any research at all? The inter web is full of info on this subject.

As the post above alludes too. EGR is to reduce Nox emissions. These are not tested for at the current UK MoT. But Nox emissions are tested for during Type Approval. Which is why EGR is present.

swatts70

Active Member

FIREAPPLIANCEMAN

Member

kenbro

Member

Brown

Well-Known Member

300bhp/ton

Well-Known Member

FIREAPPLIANCEMAN

Member

blue beasty

Leaks an prone to bits dropping off

300bhp/ton

Well-Known Member

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