Oh it will do it won't really effect the tested values, nitrogen oxide I think might increase a bit but the EGR valve will be (should!) be closed at idle anyway...chinkostu wrote:Unplugging the egr vac hose fixed mine funnily enough, still passed MOT!
Its debatable if the tester 'see's "disabled emissions equipment" if they can fail it or not though, I think they were planning to tighten this up, they may of done already I'm not sure. An example of this is say removing the cat on a diesel car (a model without DPF!) , it will still "pass" but the tester knows "originally this had a cat fitted"
