the shreksta

iTrader: (20)

so i have a hawk sti with a full 3" decat system.

3" downpipe of unknown brand
3" center section by scoobyworld (afterburner) non-resonated
3" afterburner vortex backbox

my usual guy i use for mot's cant do them anymore so i think its easier if i get him to fit a cat just for the mot, exactly which one would i need?

cheers

jaygsi

iTrader: (46)

Just get a sports cat bud 200 cell or a Prodrive one think there 200 cell aswell. Got one on my Impreza that I bought off here works well.

the shreksta

iTrader: (20)

are they available in 3 inch fitment?

Russell38

Prodrive are 2.5....I think scoobyworld do one in 3 inch

the shreksta

iTrader: (20)

so am i looking for a sports cat in the downpipe or in the center section?

SmurfyBhoy

You want it closer to the turbo than the backbox or wont heat up and chances it can fail when cold

the shreksta

iTrader: (20)

ok so ideally im looking for a downpipe with a sports cat then in a 3" fitment

hackisfun

something like this might do.

https://www.ebay.co.uk/i/15119964783...3D151199647837

or try find something 2nd hand and cheaper

the shreksta

iTrader: (20)

is it me or does that look like it tails off to 2.5" fitment

BrownPantsRacing

iTrader: (6)

As Smurf said, it wants to be as close to the turbo as possible. Cat in centre pipe won't work. I have a friend who has a Litchfield Forester STI and it has a sports cat in the centre pipe and fails MOT emissions every year without fail.

Cobra make a full 3" downpipe with sports cat.

hackisfun

apologies your correct as standard card have 2.5" here a full 3" one which is unbranded https://www.ebay.co.uk/itm/230788197510 a cobra one will cost you double https://www.ebay.co.uk/itm/332390893715

The Rig

iTrader: (13)

Is it to be fitted all the time or just for MOT`s ?

Reason i ask is it take ALOT of heat to get my sportscat close to passing a CAT emmissions test, i mean, up and down the bypass twice at 70 , ingo MOT station and do emmssions test straight away and then it still needs idle revving to get back to correct heat.

if its just for mot id stick a normal cat in it to be safe

SmurfyBhoy

Save some cash to prob, if only for the test

Had a Saab Hot Aero with Sports Cat which needed to be roasted to pass

jaygsi

iTrader: (46)

To be fair i need to give mine a blast to pass, but always does, thought thats because mine is just a summer car. Thats 200cell, you can get 100 cell that should pass alot easier. Also mine is heat wrapped. Be worth wrapping your exhaust manifold aswell if you go down this route.

BrownPantsRacing

iTrader: (6)

Think you'll find that's the other way around.

200 cel is more MOT compliant and easier to pass than 100 cel which is less restrictive and lets more harmful particles through.

I had a 200 cel cobra on my car and passed MOT fine every year without having do drive it like I stole it beforehand.

the shreksta

iTrader: (20)

thanks for the advice guys, i may try and find another place that will do it for me as i cant be bothered with the hassle. theres loads of tricked up cars around here so chances are most are running a de-cat