Defo need to be mapped properly Carlo! But if they are, they are alot more reliable than cossie's in my opinion.

I've had mine for a year, and done 13k miles in it and i've not had any trouble with it. It's thrashed and will take it all day long(touches wood )

The people that tell you stories of chocolate engines etc don't have a clue, and never look after them properly.

If you have attention to detail as far as running and maintaining your cars is concerned, then you will be fine.