Dave M UK

iTrader: (4)

I have Decatted my downpipe on my 2001 classic but still retain the centre cat for MOT purposes, what i want to know is WILL IT PASS AN MOT????

I have done a search and found 1001 threads on this matter but what all of them lack is a simple YES or NO,

Please dont comment if you dont know, i am looking for honest answers from people who have been through an MOT test with only the centre cat in place, please do not tell me what you think may happen or what happened to your brothers mates dog when he did it.

Short, Sharp and to the point please,

I need to know if i will have to replace the downpipe cat everytime i have an MOT

Cherrs, Dave M

magic40

yes but you will have to get the car ENGINE/EXHAUST HOT

cnewboult

honestly find a friendly mot station ;-) then get the centre done too like me ;-)

Granby

iTrader: (5)

I took my 2004 WRX with just a centre cat on it to a MOT station to see if it would pass and it was right on the limit but yes it would still of been a pass

Mother Theresa

Mine passed with just what you are describing. Your engine will run a lot better with that cat out though.

Dragonman

My 2003 sti with de cat front failed yesterday 73 instead of 35 somethings

jaydut

ive nothing but ss all the way back to the turbo,but have been assured as long as the engine and exhaust are hot it will pass.

Dave M UK

iTrader: (4)

I have the PPP centre resonator in at the moment but have the original centre pipe with cat in my garage to put on when MOT time draws near,

Mine is a classic not a newage so maybe the emission levels vary when the downpipe is decatted,

I cant find a friendly tester because the whole system has changed and your exact emission levels are recorded and sent away so it is no longer possible to pay off the tester,

Regaurding the SS all the way through post- there needs to be a cat no matter what the emission levels, with no cat at all it would fail the MOT before the emisions were even measured, and then even if they were i am pretty sure it would fail as the emissions would be higher than the threshold

Dave M

cnewboult

it is still possible to fiddle the system

I know several high performance cars with no cats that get through.

but if you genuinly cant find one to pass then yoru just gonna have to get ur cat back on - its onyl a few bolts though

jaydut

yeh but i know a couple of people with turbo back pipes that have passed.

cnewboult

its not what u know its who you know

jaydut

well i need to get to know mines due on the 11th nov

Criss

Try the most respected scooby garage in the north west

gaz-cole

get friendly with the mot tester or find a friendly one

ZEN Performance

WRX with decat downpipe still has 2 cats in place, as there is one in the up-pipe and the centre. Borderline, probably worth a try.

lightwave693

mine passed a few weeks ago with just the center cat, failed the first test so as a second chance they run the engine at around 2500 - 3000rpm for 3 mins.. mine passed this. my98uk turbo 90k miles

Dave M UK

iTrader: (4)

Its not a WRX its a turbo 2000 so only has 2 cats as far as i am aware,

from the information im getting i summise that if the engine is hot enough i can get through the MOT with just the centre cat in, which is good news really cos changing the downpipe every year would be a pain.

As for knowing a friendly tester it aint just about paying a guy a tenner and he will turn a blind eye to the lack of cats its the emission results that HAVE to be provided, unless he just types some random figures into the computer which gets put on some kind of national database then its very hard to cheat.

Dave M

evalscooby

my garage said i neednt have bothered putting my cat downpipe on. apparently according to them gf8 doesnt show on the database so they didnt do the recordings. nice one.