Yeah, yam noodles are a tricky one as they are not noodles as the western world understand them. They are protein based and there is conflicting information but at the VERY most there is 20 cals in a whole packet (some websites say there are as little as 5 cals in a packet).
They are hard to come by but luckily I've found a Chinese supermarket in Manchester that sells them and they are only £1.38 a pack. I thought if they were syn free on the original plan they'd be a great replacement for pasta and rice as they are very filling.
I find my body doesn't react very well to loads of carbs which is why I'm trying to stick to the original plan where possible.