Originally Posted by nidfix
Why would it be more recommended for N55 ?
Is it flimsier on N55 ?
Yes, by far. N55 has plenty of owners who have experience "Cracks and breaks" at high boost levels. From just a simple crack causing boost leak, to some serious cases of it snapping off.
A lot of N55 owners will tell you that it is the first thing you should do. But then again, N54 is different.