I will be decatting the MY03 JDM STi very soon, but it is due for an mot, soon aswell. Its going to have the 3" Exhaust all the way through, but with it being 3" all the way, how will I get a cat that will fit to put back on for MOT's?!

Sigh.

 

Mine passed without any cats ( MY01 WRX) do a search, there have been a few threads on the subject

 

I did, and found it was mostly about classics, which didnt help me much.

But on my V5, it says im allowed upto 3.0 turbo diesel, surely my emissions will be lower than that lol

 

Multijfj,have you got an exhaust sorted yet?I will be removing a 3" system in the next couple of months,it has got a Milltek centre which has had a 100 cell sport cat fitted and a Milltek back box,not sure what the down pipe is,but it is for a twin scroll and is wrapped.

Merv

 

how you doin mate,just motd mine then changed the centre section for a magnex straightthrough pipe.has a plate welded to it but says not for road use.sounds awsome but ive kept the old centre section as ive been advised it will fail the mot with this pipe,so ill change back for next one.

 

Why are you removing it? I have got it sorted, its the stage 3 powerstation tuning package for twin scrolls, so its the milltek full system. The sports cat however, I would be interested in in a couple of month, definatly, if you let me know a price I will have it off you.

Cheers!