Removing Catalitic convertor from 182, possible?

[Dave finney]

Hi everyone,
Is it possible to get a straight through pipe to replace the Catalitic convertor from exhaust of a 182? I assume the sensor after the cat would still need to be in place but will the engine run and will it run correctly?
With no Catalitic convertor it ought to have a little more power, slightly better economy and be more reliable so it could be worth doing. Obviously some method might need to be used to get through MOT when required, eg refit cat, but has anyone done this and what results have you got?

And where can you recommend to get this done, or just buy the pipe and fit myself?

Thanks,
Dave.

 

[7MAT]

Try www.yozzasport.co.uk for the 182 de-cat pipe!

7MAT

 

[Pete]

Try somewhere like Pro Speed or GDI.

 

[Andy GDI]

Charlie at Prospeed makes silenced ones he can mail order out to you.

 

[rmccardal]

I'd go for pro-speed.

 

[miketheman2k]

So would I

 

[Dave finney]

Thanks chaps, seems removing the cat will work and thanks 7MAT for info at http://www.yozzasport.co.uk/store/products.php?cat=17 . This pipe only removes cat but it looks like 1st silencer is quite restrictive aswel. I'll try to find pipe that removes cat AND 1st silencer, perhaps with a better silencer or perhaps without.

Has anyone here removed the cat on their 182? What do you think? Any more mpg or more power? Any problems?

Thanks again,
Dave.

 

[Andy GDI]

wont change the MPG, it will give you some better throttle response though and provide a building block for more bhp later on

 

[rmccardal]

You might get the emissions light coming on now and then. Nothing else bad happened to me.

www.pro-speed.biz ... he will make up any custom pipe you like.

 

[miketheman2k]

...and his work has a life-time guarantee.

 

[Andy GDI]

I have had 4 prospeeds

 

[miketheman2k]

^^^ not because they have rusted and fallen off though is it Andy?

 

[Dave finney]

Thanks chaps, at least I now know it works!

Has anyone with a de-cat system checked the MOT emissions?

I assume it will fail but by how much? What are the readings for each gas?

 

[CrazyK]

^^^^ it varies quite dramatically from car to car each engine can be running so differently that you cant rely on someone else is reading

 

[Fred@BTM]

it'll more than likely fail, we suggest putting the CAT back on for the MOT, its a 30min job (1hr if you're going slowly )

 

[thedoc]

mine decatted car failed on emissions, something about 2 or 3 times over the required limit (lots of numbers on the screen, but didn't mean much to me)

 

[Dave finney]

I'm fairly sure de-cat will fail MOT on emissions but there are new fuel and intake devices which might bring it back under legal limit. If so then a very good solution but I was most concerned whether it would work at all!

The amount it fails by is a useful guide as to whether it's even possible to fix the emissions at all, double might be possible but I suspect three times wouldn't be. Try to make de-cat interchangeable is best I suppose.

 

[Fred@BTM]

our's is, takes about 30-45mins to fit/swap over

 

[Andy GDI]

182's are easy to change the cat, 172's are a pain in the arse.

 

[ben_p]

just to note, the first sensor should be plugged in not the second m8, it will not run with the first sensor out, as this alters fuel and de tects engine is running the second sensor tests the effectivemness of the cat, so if it is reading fresh air then its working very well, plug it in and you will get the light

 

[Dave finney]

Thanks ben p but can you clarify? Obviously 1st sensor need to be in place and connected but should 2nd sensor (after cat if fitted) be "in place in exhaust flow and connected" or connected but not placed in exhaust flow (just tucked up somewhere)?

And will the cat light come on or stay off?

Thanks.