Revo Ed30 Fails MOT on Emissions

[bacillus]

I would first check your fuel trim (block 031). You can do this without starting the car.

[Rob GTI]

What values should I expecting to see - for normal and if something is wrong. If something is wrong what needs doing??

[Saint Steve]

Lambda sensor faulty??.

 I think i have the same issue, but had no problem with MOT failure with it. It passed on that ok. But getting an error showing up on vcds.
(lean Bank error?) or something like that.

[john_o]

check values first but assuming code wont let it get too lean , id let it warm up and thrap it silly.
WOT to redline and keep doing it to get the cat well hot ...outside temp of 25deg is irrelevant with the temp the cat needs to be at to do its thing

unless you have bump started the car , it would be unusual for the cat to be knacked.

[Rob GTI]

check values first but assuming code wont let it get too lean , id let it warm up and thrap it silly.
WOT to redline and keep doing it to get the cat well hot ...outside temp of 25deg is irrelevant with the temp the cat needs to be at to do its thing

unless you have bump started the car , it would be unusual for the cat to be knacked.

Don't suppose I've given the car a really hard time lately, suppose I'd better get to work 

Don't mean to sound thick but what does WOT stand for?

[Poverty]

check values first but assuming code wont let it get too lean , id let it warm up and thrap it silly.
WOT to redline and keep doing it to get the cat well hot ...outside temp of 25deg is irrelevant with the temp the cat needs to be at to do its thing

unless you have bump started the car , it would be unusual for the cat to be knacked.

Don't suppose I've given the car a really hard time lately, suppose I'd better get to work 

Don't mean to sound thick but what does WOT stand for?

wide open throttle.

Apparently there was a mk5 gti with a decat that passed its emissions test.

What about sticking the car into valet mode during the test lol

[cmdrfire]

If the car is running lean I blame the dbilas intake for having the wrong sectioned MAF area.

[RedRobin]

Probably best that you take this up with REVO rather than a bunch of strangers guessing............................

Strangers??? I'd though we were all friends here 

Some are stranger than others! 

[iainalpine]

Hi Guys

The direct petrol injection cars run a higher rpm range while on the test. Not many testers are doing this and the cars are failing.
I cant remember what RPM range they should be held at but this is a defo issue.

hope this helps before you go out and spend money on something that is not faulty.

Iain

[nc35]

Sounds like we should get MOTs done at VW.
Hopefully they know about the higher rev range for the test.

[RedRobin]

^^^^
I've had both my MOT's done by my VW dealer - The first one was free and I know the folks there very well and they know my car and its mods from new and no problem yet. It's not worth saving a £fiver or even a £tenner by going somewhere else imo.

I'm Revo2 plus Milltek TBE custom (VWR type backbox etc). This July will be my first MOT with the Forge Twintake installed.

Isn't the MOT emissions failure more likely to be possibly exhaust/cat related rather than Revo remap?

[QD MBE]

Poor quality Catalysers can indeed cause emissions failures.

[RedRobin]

.
Banging the cat box with the side of your fist and hearing a rattle is an easy way to tell if your cat is on the way out.

I think that cats can also fail through being subjected to too much heat and consequently melting. Which in turn may be the result of other influences, but I'm not an expert.

Milltek went through a period of cat probs but now use top notch German ones AFAIK.

[Rob GTI]

Hi Guys

The direct petrol injection cars run a higher rpm range while on the test. Not many testers are doing this and the cars are failing.
I cant remember what RPM range they should be held at but this is a defo issue.

hope this helps before you go out and spend money on something that is not faulty.

Iain

The car was held at about 2.5 - 3k revs for the test, not sure if this is right but will raise this with my tuner if they ever call me back.

[Rob GTI]

Isn't the MOT emissions failure more likely to be possibly exhaust/cat related rather than Revo remap?

Thats why I am contacting my tuner first as it could be either the map, intake or exhaust. Personally I don't think its the map beacuse it failed with the map and and off. BUT I'm not expert and am only guessing.