set your turbo timer to 0 then they wont hassle you for that
pretty much make sure all your signals are working (breaks, indicators, lights, revers and number plate lights)
also make sure your wipers and squirters work
make sure that your tyres are good
it has to be over 11 cms from the ground at the lowest point (usually exhaust)
your exhaust will be fine, mine has no mufflers (only a cannon) and it passed last week with a bashed out cat