Project Yellow thing - coming to an end

[John1.4]

so.... it didn't pass... at all, well... bits of it did, the headlights were naff, with no visible pattern, which i rectified last night with lots of cleaning products, the inner lenses had gone cloudy, and turns out there was a surprisingly large amount of filth on it as well, so now really clear and the light pattern is back!!!!!

however

the other thing it failed on was emissions.... like bad, 5% CO bad,

the tester did manage to test it at basically flat cold though, and i only heard one fast idle test, which was naughty imo,

so today to cover all the bases, i refitted the headlights properly, then went checking sensors / filters etc, water temp was in range, but i had a spare so swapped that in anyways, might get a new lambda sensor just to see if it makes a difference, tbh i wasn't sure it was the right one when it arrived, and i've ordered a couple of new exhaust gaskets for the downpipe join as it's crap and blowing ever so slightly,

past that it all should be okay, theres no obvious air leaks, plugs, leads, coilpack, cat are all fairly new...

more progress hoped for next week when it goes back to the garage, full hot, straight on the tester