mannifold

hi all, has anyone had any probs with the atp mannifold, and he's now on his third manifold due to cracking, does anyone have an idea how to sort this because the place doing the work have said they wont cover it if it goes again and its just not right as its still under warranty, please help...

hi guys i hope someone could spread some light on a situation causing a friend of mine much distress, whats the most power you can achieve with the standard mannifold fitted, any help on this would be great, thanks guys