Right I noticed the difference on him after about two weeks, which was roughly the same time he noticed regular bowel movements...
He didn't eat fruit with meals, (that was a Gillian Mckeith thingy - about not mixing food groups) but basically he eat all kinds - lots of apples, pears (cos there cheap and easily available) and then anything else - all are fibrous)
A typical lunch was a bowl of rice with a tin of chickpeas (this was for the family - not just for one person), and then sometimes other beans put in (mung beans/aduki beans) and then vegetables chopped in - carrots, peppers, onion...and then a handful of sunflower seeds...
Hope that all helps
I was quite amazed by the change - his breath began to smell actually sweet! Before it was awful - in the mornings it could strip the wall paper off the walls, and there was no time in the day when it was good - even after just brushing his teeth! His BO wasn't always as bad - but that cleared up too!
Also, as added extras his skin cleared up too as it wasn't very good before hand - I guess his body was just full of rotting food!
PS - also he cut out ALL white products for that time - by that I mean, white bread, white pasta - he had brown bread (wheat free) and brown rice - white rice is apparently next to useless!