106 Gti catalytic converter MOT challenge - Saxperience

karl_mh · 18th September 2021, 07:32

What does everyone do for the MOT if you have a de-cat system ???????????????

I’ve now got my car up and running so I’m nearly ready for the MOT so I’m after advice regarding the emissions testing. I have 2 options as far as I can see!

I have a supersprint manifold with a 2” pugsport stainless de-cat/dummy car system.

1) take it for the MOT and see if it passes the emissions with the above system fitted.

2) try to graft on a standard cat onto the pugsport system just for the MOT then remove post MOT.

What does everyone else do?????

9Freedman9 · 18th September 2021, 21:12

It won’t pass with a decat. Get the cat put back on and then just remove it once it passes.

karl_mh · 1st October 2021, 20:53

Bloody hell

Bedford126 · 5th October 2021, 16:27

Sports cat+ Emissions control map?

Gabbastard · 12th October 2021, 13:32

MOT emissions pass?

laughs in friendly tester

MartinObviously · 13th October 2021, 16:11

Mine passed no bother with a cat fitted.

without a cat, it still won't pass on the CO, best I could get mine to was 0.31% CO. which is 0.1% of a fail. Emissions friendly maps don't exist, as Lambda is checked to stop you putting in a car that's running lean. the maximum lambda is 1.03. That's as lean as you can go.