Kevin Bacon 5 Posted April 13, 2007 Only if the MAF is screwed ;-) Turbos and chargers at idle don't affect the baseline idle emissions chap, but you do need to watch out for the 3000rpm emissions though. Quote Share this post Link to post Share on other sites
Guest Posted April 13, 2007 or do what i did last time i went for an MOT. i took the old cat with me, and when the tester saw i had no cat on said "you wont pass without the cat on mate" so i gave him the cat and told him if he wanted to fit the cat for the MOT, then swap it back to the de-cat he could. i think he thought sod that, so like kev said, he just shoved the probe into another cars exhaust :) and watch him charge you 60+ quid an hour for the time ;) Quote Share this post Link to post Share on other sites