i have a decat but my mot is this saturday!

[Paddy_g46]

so i cnt b bothered 2 take it off, will it defo fail? i reckon i cud get the tester 2 turn a blind eye as he is a longtime mate but wud the emmisions readings b bad?

 

[cliokiz]

I think i heard that if you run some engine cleaner through it and thrash it about for a while before the MOT it might get through? Dunno really, i just put my cat back on, after all it's not difficult. Having said that i let a garage do it as i couldn't be arsed and it only cost me £10.

 

[Maxx]

My 1.2 failed with de-cat but passed fine with a cat

 

[edde]

Unlikly he'd forget to check the car his job and the fins and prison sentance arn't worth it.
IF the engine is good condition run some engine cleaner though it plus a good italian tune up (ie drive it hard to the limiter a bit) and give it a try. Whether it passes is unknown some cars do some don't.

You will always pass with a CAT unless somethings broken.

 

[Paddy_g46]

yeh but is it possbiel to pass with a de-cat? i mean is it a legal requirement?

 

[edde]

yeh but is it possbiel to pass with a de-cat? i mean is it a legal requirement?

You need to have emmisiosn to the standard required having cat don't think is legal no gareg wuld bother if you pass MOT emmisions.

 

[Paddy_g46]

can any1 back this up that u dnt actually need a cat but u need 2 pass the test? i have just finished a full tank of petty with some of that redex fuel stuff added and im gonna do anyother bit by saturday, also if i give it a good blitzing on the way 2 the garage do u think it will b ok?

edit:i realy dnt want the hassle fo taking it off then puttign it back on after

 

[Dan@SJM]

thats true, if it gives the right emissions then the cat is not needed.

 

[edde]

can any1 back this up that u dnt actually need a cat but u need 2 pass the test? i have just finished a full tank of petty with some of that redex fuel stuff added and im gonna do anyother bit by saturday, also if i give it a good blitzing on the way 2 the garage do u think it will b ok?

edit:i realy dnt want the hassle fo taking it off then puttign it back on after

People have passed with decats before now.
Its the emmisions you need to pass.

 

[Dan@SJM]

you copuld also try no airfilter.

 

[Paddy_g46]

you copuld also try no airfilter.

wat will that do?

 

[Dan@SJM]

lean up the mixture.

 

[Paddy_g46]

isnt there a thign u can adjust for that? and what will that do?

 

[Paddy_g46]

^^^^^

 

[Russ.]

you copuld also try no airfilter.

lmao please tell me you arent being serious?

 

[JJsRT]

Sounds silly but some people i know put the redex straight in to the air intake (by taking the filter off) and set the revs to about 4k. Sounds mad but actually did make it run quite well and got rid of a lot of cr4p out the engine...

Not saying its the right way but worked for them!

 

[Englebert]

I thought the law was that it must have a cat (post '92), not must pass emissions?

 

[Pat_986]

I thought the law was that it must have a cat (post '92), not must pass emissions?

The 92 law is when the emission's were tightened, to pass a MOT you do not need a cat-however it is unlikely to pass without one.

Basicly if the car is pre 1992 you are allowed to put out more emissions.

 

[tommyboy]

lmao please tell me you arent being serious?

I think he is Russ :S

 

[7MAT]

I thought the law was that it must have a cat (post '92), not must pass emissions?

It is only law that manufacturers produce cars fitted with cats.

It is not part of the MOT process to actually check to see if a cat is fitted or not.

 

[Paddy_g46]

Sounds silly but some people i know put the redex straight in to the air intake (by taking the filter off) and set the revs to about 4k. Sounds mad but actually did make it run quite well and got rid of a lot of cr4p out the engine...

Not saying its the right way but worked for them!

this is how it says to do it on the bottle of some engien cleaners mate, i did this on my old engine, but u have 2 keep the revs really high or the car stalls

 

[Paddy_g46]

anyway i rang me mechainc today who will b mot'ign it and he gave me a wink wink over the phone lol

 

[Paddy_g46]

passed! but i need to replace front wheel bearing!