I think everybody here knows that Rs2 exhaustmanifoilds is bad it crakcs/leaks.
Waht is the common behavior/shymtom when driving a rs2 with the
typical crack??
You wont notice it's cracked. Most crack around the collector and sometimes up to the turbo flange, however, this isn't visible and it doesn't affect performance. They all crack, so don't worry about it, it's not normally an issue.