Originally Posted by Brandon314159

I think the only way I could (and have been able to tell) when my wastegate hose went bad was I heard whistling noises. The hope probably is that when you took your MB into the dealer every oil change, they would probably eventually change out that hose.

Mine cracked and let air out...I noticed that when I floored it my boost pressure shot up past 20psi at times but for the most part the overboost protection keeps it from getting much past 15psi (safe limits).

Thats probably what the overboost valve is there for...people notice their car surging on acceleration and take it into the dealer and they replace the hose. Fix