How do the new MOT rules affect a decat manifold upgrade?

Technical Area Engine, Transmission, Exhaust etc
21

Excellent thanks for the updates pjr and Mac 

Just purchased the IL motorsport 4-1 and waiting for a couple of days leave to come around so I can fit it.

22

Hi,For information. My Mk3.3 2.0 l has had a Roddisons Power Upgrade. So de-cat on the exhaust manifold, which has been replaced by 4 into 1 stainless steel high flow manifold. Plus, high flow stainless steel back box and a remap. Had its MOT today, passed no problem…

23

I have a 2007 2.0 Mk3 with 90k miles on the clock and two years ago had it fitted with a replacement BBR manifold and exhaust system up to and including the silencer but maintaining the original small in-line cat converter.
Has had 2 MOTs in this set-up, the last in April, passing both with no issues