Hi

I have just taken my 2002 3" decat STI to the local MOT centre for an emission test.

Instead of being 0.3 the result was 0.6, double what it should have been.

I'm just asking what people would recommend I do...

1. fit a standard system with original CAT fitted

2. buy a sports CAT and get it fitted for the MOT, and removed afterwards

3. buy a sports CAT and keep it fitted to the car.

If I do go for the sports cat route, do you reckon it will bring the emissions down enough?

Thanks

Tom

 

Buy a sports cat mate and leave it.

I have been running my sports cat on my car for 4/5 years and passes even with an advisory of "LOUD EXHAUST" .

Thats with using a MD321 T, FMIC and ALS. Big 850CC injectors.


Steve

 

I have got a sports cat in the centre section if my milltek system and leave it on permanently. At mot time I take the car for a little blast to warm the cat up at it goes straight through with no problems.

 

Reason I fitted a sports cat to mine, couldnt be bothered with messing around at MOT time, mine has gone through ok so far (fingers crossed)

 

Yep mine went straight through the other month with my sports cat,the tester said the emissions were fine.

 

I got fed up hunting for a friendly garage with my de-cat.So got Ninja 100cell sports cat fitted at Scooby World,warm up with a little run and ask MOT tester to do emissions test first and sails through for 3 yrs now.Am running 315bhp so am happy with the sports cat not too restrictive.

 

+1 for ninja sports cat,its a proper 100cell cat..not a cheapy restrictive 200cell one.mine's got me through 3 mot's aswell dose have to be very very hot to work thou.but great bit of kit .im running 333 bhp. my53 sti uk..i doubt you would get much more with full de-cat.maybe 5-6 bhp.

 

Forgot to say in my post that I am running 340bhp with my sports cat fitted so not restrictive at all.

 

I'm running 405 BHP with my Miltek sports Cat in the centre section, do need to get it hot first and do emissions first. Mine passes and it's on a 2.5 block now with Syvecs etc.

 

Just got in from my MOT this morning.

Passed no problems at all. Warmed the cat up with a few spirited runs on route and with the anti lag on a few times.

My cat take 450bhp. Job done.

Steve