So hello all,

A friend at work this evening told me about remapped ecu's being an instant fail for MOT's? As so many people out there have got them done has anyone had any problems come MOT time? And why is it a fail?

Sorry if this topic has already been discussed at length!

I look forward to reading the replies!

Im an mot tester n i dosnt mata al all mate new regulations r on silly things like lights on dash but a ecu mapped isnt detected evan if u plug car in on a diagnistic tool

Im an mot tester n i dosnt mata al all mate new regulations r on silly things like lights on dash but a ecu mapped isnt detected evan if u plug car in on a diagnistic tool

Thanks for your reply, Why is it in the regulations :/ hmmm...

Anyone else got any experience with this?

How new are these rules?

I think it may be worth checking the official

website for regulations.

My mapped Fabia passed an MOT 3 weeks ago??

Clean sheet, no advisories.

My MOT test centre and VAG specialist also does REVO mapping

as well as other performance mods.

How can they map a car and then fail it due to the map?

And they'd know it was there, because they put it there.

I thought it was just something that had been dismissed as too

time consuming to be part of an MOT test but a good idea in principle.

A remap is not part of the MOT, the only thing that it could possibly influence on the MOT will be the smoke or emissions tests

.

How new are these rules?

I think it may be worth checking the official

website for regulations.

My mapped Fabia passed an MOT 3 weeks ago??

Clean sheet, no advisories.

My MOT test centre and VAG specialist also does REVO mapping

as well as other performance mods.

How can they map a car and then fail it due to the map?

And they'd know it was there, because they put it there.

I thought it was just something that had been dismissed as too

time consuming to be part of an MOT test but a good idea in principle.

Im not sure how new these 'new' rules are. Just wondering really as a lad from work was pretty adamant that he was 'right'!

I knew I'd get a straight answer on here, thanks

A remap is not part of the MOT, the only thing that it could possibly influence on the MOT will be the smoke or emissions tests

.

I can see your point, I've seen a fair few smokey remapped cars. This could affect the emmisions.

Diesels donot go thru an emisions test its a smoke test my fabia has no cat no egr n a mediam smoke map n it went straight thru the only way it could effect the mot is if it was a high smoke map then it may fail the smoke test but very unlikely and i havnt seen any updates on the computer regarding remaped cars ive moted afew of them also alot of my mates have moddified cars both petrol and diesel n none have failed coz of a remap hope this helps

So hello all,

A friend at work this evening told me about remapped ecu's being an instant fail for MOT's? As so many people out there have got them done has anyone had any problems come MOT time? And why is it a fail?

Sorry if this topic has already been discussed at length!

I look forward to reading the replies!

Topic has been discussed exhaustively for at leats 18 months. Mainly due to at least three piecesof information.

- the original EU requirements for vahicle checks. To be adopted by member states.

- Dept transport "policy?! style" notices and letters to VOSA etc basically **** stirring and banging drums (Daily mail readers).

- The actual MOT testing guide as of 1st january 2012.

As information has appeared in print, whether law or not, it's been discussed/disected and misunderstood. It seems to me though that DOT is split on the testing issue. there seem to be those who want everything "different" off the roads andthose who have to deliver pragmatic solutions to the problems of gettign ever more exhaustive checks completed in an annual MOT.

If the MOT is ever reduced to one in two years or three years, look out. Lots of "modding nasty" items may well pop up then.

The "illegal ECU modification" item was in the original EU documentation but AFAICS not adopted in any form currently by the UK MOT.

J.

MOT currently tests to see if a car is road worthy why would a remap impact on this?

MOT currently tests to see if a car is road worthy why would a remap impact on this?

The only impact to roadworthyness is the amount of smoke it produces, as discussed above. However the test is done with no load on the engine so a quite smoky map at high load may still pass if it doesn't produce it with no load.

Edited 28 February, 201214 yr by Jim H

when i picked up my fabia last thursday of course there was no tax on it so i went in to tax it and they have a big sign up with all the new legislation on it, i would assume the list is also on the website??

but does anyone know if this applies to all cars or cars registered after the date that the new legislation comes into effect??

reason i ask is i have a straight through milltek and it says please note not for road use on it, one of the new legislations was that the car needs to have a cat fitted......mine doesnt more of a hassle changing the exhaust every mot time?? no??

Pretty sure that diesels do not require cats to pass but petrol cars do...

I wait to be corrected!

when i picked up my fabia last thursday of course there was no tax on it so i went in to tax it and they have a big sign up with all the new legislation on it, i would assume the list is also on the website??

but does anyone know if this applies to all cars or cars registered after the date that the new legislation comes into effect??

reason i ask is i have a straight through milltek and it says please note not for road use on it, one of the new legislations was that the car needs to have a cat fitted......mine doesnt more of a hassle changing the exhaust every mot time?? no??

http://uk.autoblog.com/2012/01/04/changes-to-mot-rules-in-2012-are-you-ready/

nice now i need a new cat, i wonder if i say im allergic will i get by??

http://uk.autoblog.c...-are-you-ready/

nice now i need a new cat, i wonder if i say im allergic will i get by??

Check for the presence of a catalytic converter on spark ignition engined vehicles first

used on or after 1 July 2002 with, four or more wheels, a GVW of more than 400kg,

not more than 12 passenger seats, and a DGW of not more than 3500kg.

this comes from the dvlni website which applies to northern ireland but im sure its the same throughout the uk.

so as fabia_19 says we r fine with no cats???

no wait it says on down

A catalytic converter missing where one was fitted as standard.

so we do need one for the mot??

http://www.dvlni.gov.uk/Freedom%20of%20Information/Light%20Vehicle%20Inspection%20Manual/Exhaust%20System.pdf

Edited 28 February, 201214 yr by P6VRS

YOU DO NOT NEED A CAT ON A DIESEL :love:

New rules start in april for this years changes. diesels do not go through a emissions test but all cars must have a visable cat now for mot....unless you no someone in the trade

It really is like talking to a brick wall lol.

The visual check for a cat only applies to SPARK IGNITION CARS. Is your diesel fabia a spark ignition car?

If a remap is now going to be a fail for a MOT you would not be able to get insured, declaring this mod. Your car would technically not be road legal so insurance invalid.

Edited 29 February, 201214 yr by armstrong21490

It really is like talking to a brick wall lol.

The visual check for a cat only applies to SPARK IGNITION CARS. Is your diesel fabia a spark ignition car?

I've given up now. I've spent months trying to answer every "omg new MOT rules" thread, but no one can read the documents, it seems. All the links floating around the web on sites like the AA, car mag websites, other forums, etc are all either outdated information, or in the AA's case simplified to the point of inaccuracy. The ONLY advice you need to read is the MOT testing manual itself which is a public document on the VOSA website. Whatever you read in there goes, and would form the basis of an appeal if necessary (i.e. if you get failed for decatting a TDI, the VOSA document is what you will use to appeal against the failure).

New rules start in april for this years changes. diesels do not go through a emissions test but all cars must have a visable cat now for mot....unless you no someone in the trade

Don't know how they'll be able to see it though .Last time I was under mine I was pleased to see thay the cat was hidden by the under engine cover .(Pleased because we a few vehicles at work have cats nicked) .

I've given up now. I've spent months trying to answer every "omg new MOT rules" thread, but no one can read the documents, it seems. All the links floating around the web on sites like the AA, car mag websites, other forums, etc are all either outdated information, or in the AA's case simplified to the point of inaccuracy. The ONLY advice you need to read is the MOT testing manual itself which is a public document on the VOSA website. Whatever you read in there goes, and would form the basis of an appeal if necessary (i.e. if you get failed for decatting a TDI, the VOSA document is what you will use to appeal against the failure).

Worth trying another angle perhaps?

"OMG! You have no cat! You know they'll be able to follow the trail of emissions back to your house? That's a £1000000 fine AND they CRUSH YOUR CAR!!!!. Best sell it to me for £100, I'm afraid it's worthless otherwise, fit only for scrap!!!"

I've given up now. I've spent months trying to answer every "omg new MOT rules" thread, but no one can read the documents, it seems. All the links floating around the web on sites like the AA, car mag websites, other forums, etc are all either outdated information, or in the AA's case simplified to the point of inaccuracy. The ONLY advice you need to read is the MOT testing manual itself which is a public document on the VOSA website. Whatever you read in there goes, and would form the basis of an appeal if necessary (i.e. if you get failed for decatting a TDI, the VOSA document is what you will use to appeal against the failure).

http://www.dvlni.gov...st%20System.pdf

try this......... the new legislation is highlighted in red, go down below the bit about spark ignition it says u need one!!!

It really is like talking to a brick wall lol.

The visual check for a cat only applies to SPARK IGNITION CARS. Is your diesel fabia a spark ignition car?

sorry i seen them awhile back i thought it said all cars but it does say spark ignition cars. i only had a quick flick through. so good news for alot of people on here.

http://www.dvlni.gov...st%20System.pdf

try this......... the new legislation is highlighted in red, go down below the bit about spark ignition it says u need one!!!

Yeah, I know that, but a lot of people just focus on the Reason for Rejection (which just says "you need a cat") without looking at what type of vehicles the test applies to.