I just fitted my 200cell downpipe/cat and still failing MOT emisions.

CO is at 1.7% and needs to be at 0.3% or below.

I am thinking is it something else now as the car failed with original Downpipe/cat for almost identical readings?

both 02 sensors changed over last 2 months.

Stumped.

Could I be unlucky and have another bad Blueflame cat, or maybe the generic ECU map overfuelling?.

not sure what that could be, i had a 100cell blueflame cat and never had any problems. If its also failing with a standard cat it cant be the exhaust system surly

Given your locality to JKM, I would suggest you pop it down to them and ask that it be put on the rollers so that they may check your air/fuel ratio and advise accordingly. It does sound as if something is up with the fueling and not the cat. Quite often, a well serviced fuel injection modern engine will get pretty close to the required emissions without a cat.

Is the car up to date with its servicing, i.e. no really mucky air filter and how about engine temperature? Emissions test is run once engine is fully up to temp. If you've got a dodgy temp sendor or thermostat is the car overfuelling in the mistaken belief that it is still cold?

A few thoughts to be getting on with!

I know this may sound silly, but are the two Lander sensors fitted in the right order?

As a well known person on here, (NOT ME) had them in the wrong order for a while and wondered why he had problems.

I know this may sound silly, but are the two Lander sensors fitted in the right order?

As a well known person on here, (NOT ME) had them in the wrong order for a while and wondered why he had problems.

Were they highlander or lowlander sensors????

Mark if you have vag-com it maybe worth logging the maf and also checking out the fuel trims and AFR. AFR via vag-com is more accurate than the tail sniffers used on the rollers.

I know this may sound silly, but are the two Lander sensors fitted in the right order?

Damn right Gerry that sounds very silly... Think you mean Lambda sensors:D

Phil

not sure what that could be, i had a 100cell blueflame cat and never had any problems. If its also failing with a standard cat it cant be the exhaust system surly

Just to point out, it was failing with my original 2 year old Blueflame down pipe/cat and not a standard cat.

Leeboy,

When this failed 3 weeks back I took it straight down to JKM as they know the car. They more or less confirmed it was the CAT after ruling out O2 sensors.

I had a choice to either order a new Miltek at around £450 fitted, or try and get a better deal with Blueflame after explaining the other Blueflame cat was duff and only around 2 years old (but not bought brand new by me, so no receipt. Nigel at Blueflame sold me a new one at trade , so a very good deal to help me out.

Gerry , not thought about that? suppose they can be fitted wrong but doubt it as I replaced like for like in terms of the cable length of the pre cat sensor is a lot longer than the post cat sensor.(hope it is that way anyway :eek: Plus JKM would of spotted this??

Martin, I also have it booked in tommorrow with JKM again to discuss and try some things, so will discuss these thing with the MAF, I am sure they tested that last time and concluded to readings were ok.

I know this may sound silly, but are the two Lander sensors fitted in the right order?

As a well known person on here, (NOT ME) had them in the wrong order for a while and wondered why he had problems.[/quote]

That was me and no, i didn't notice and neither did Jabba...

However the problems with running were apparent IMMEDIATELY so if fitted for a while then it's unlikely to be the cause.

MAF's can fail rich and coolant temp sensor could also be at fault. bare in mind IF the car is running rich it wont take long to kill a new cat :thumbdwn:

I know this may sound silly' date=' but are the two Lander sensors fitted in the right order?

As a well known person on here, (NOT ME) had them in the wrong order for a while and wondered why he had problems.[/quote]

That was me and no, i didn't notice and neither did Jabba...

However the problems with running were apparent IMMEDIATELY so if fitted for a while then it's unlikely to be the cause.

MAF's can fail rich and coolant temp sensor could also be at fault. bare in mind IF the car is running rich it wont take long to kill a new cat :thumbdwn:

Thanks for comments. I am eager to get this resolved quickly as i don't want cat ruined if it is not the cause. Only fitted it Monday and been 2 miles so hopefully will get this sorted.soon.

maybe worth slapping a standard cat back on to see if there is any change if its okay then you no its the cat:confused:

p.s is the car being given a good run when going for mot ??

if it still a problem after tomoz contact me via pm and will maybe able to help sought your mot out

maybe worth slapping a standard cat back on to see if there is any change if its okay then you no its the cat:confused:

p.s is the car being given a good run when going for mot ??

if it still a problem after tomoz contact me via pm and will maybe able to help sought your mot out

If I had the standard cat that is exactly what i would do to confirm it, but bined it when i got the first blueflame fitted 2 years back. If i can remember the MOT last year was a little over on emisions but the guy in the MOT place let it through because I knew him. Now he is playing hard ball,

What with paying for 2 MOT's a new cat it is getting expensive.

If I can get an MOT that would great so to buy me some time to try to fix it. Will PM you if JKM can't get to the bottom of it

Damn right Gerry that sounds very silly... Think you mean Lambda sensors:D

Phil

Having a senior moment, it will happen to you....................................Soon..LOL

Mind you, I have seen them called all manner of things on here.

Even sadder that you knew what I meant........LOL

Edited 12 June, 200917 yr by Beretta

Were they highlander or lowlander sensors????

Highlanders..........."There can be only one". Beware of the quickening.

If I had the standard cat that is exactly what i would do to confirm it, but bined it when i got the first blueflame fitted 2 years back.

Mark,

I have a standard cat that came off my old Octy vRS, perfect when taken off when my Blueflame was fitted, as it had just passed the MOT with perfect figures.

Its wrapped up in the loft if you want to borrow it to test out the theory.

Your more than welcome.

Mark,

I have a standard cat that came off my old Octy vRS, perfect when taken off when my Blueflame was fitted, as it had just passed the MOT with perfect figures.

Its wrapped up in the loft if you want to borrow it to test out the theory.

Your more than welcome.

Borrow.... are you saying you may still have a use for it i the future ......

*visions of Gerry buying another octy*

Borrow.... are you saying you may still have a use for it i the future ......

*visions of Gerry buying another octy*

Mart,

Wash your mouth out, if I ever got another Octy vRS how long do you think the standard exhaust would stay on..................LOL

Should have kept the one I had and not sold it, that way it would still be immaculate and not wrecked.

trevor b is selling one on the cheap only heard good thing about it and has the added value of very expensive carbon fibre parts !!!!!!

he may do you a good deal:rofl::P

comeon you no you want it :P

Should have kept the one I had and not sold it, that way it would still be immaculate and not wrecked.

Not a fan of stick on carbon fibre and wonky wheels then?

Not a fan of stick on carbon fibre and wonky wheels then?

When the new owner altered the tracking, well the whole front of the car....LOL,it was perfect for left hand turns, but a right git on right hand ones, see the Castle Combe pictures.

Who ordered a Baghdad taxi?

Really does hurt me to see it in that condition, but I think he is putting it back to standard to sell it, so watch out any unsuspecting buyers.

Mark,

I have a standard cat that came off my old Octy vRS, perfect when taken off when my Blueflame was fitted, as it had just passed the MOT with perfect figures.

Its wrapped up in the loft if you want to borrow it to test out the theory.

Your more than welcome.

Gerry thanks for that.

Car is all fixed now and MOT'd

Guess what it was..................

The Remap...........

JKM did a great job of identifying the lambda readings and found that at idle the fuel mixture was ok and also ok at full load, but at around 3120 rpm the mixture was very rich. The Lambda sensor current value was 0.938 and the specified value was 0.945 which should have been 1.000. (thats as far as my techi knowledge will go)This is why the MOT garage was failing on emmisions. elsewhere the remap was ok and a far as boost and driving no issues. So not really a bad map just a map that the generic tolerances were over done for that specific setting.

I guess as metioned before you get what you pay for. Mine was a postal ECU map where it was bench flashed. Won't go that way again.

So I had some choices

Track down a garage that would let it pass

Get JKM to take off the remap and put back to standard

Get a REVO map

what did I go for:D.

P.S I now have a nealy new Blueflame downpipe/cat that is MOT passable up for grabs.

Great news Mark, at least it a weight off your mind.