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Has anyone changed the Stock Blow Off Valves on their N54 Motors for more efficient one. and if so, what was the outcome

Yes.. and I don't think any of them are any more efficient. Changing the entire charge pipe setup is the efficient part.

Quote:

Originally Posted by FADAGUY (Post 1568283)

Has anyone changed the Stock Blow Off Valves on their N54 Motors for more efficient one. and if so, what was the outcome

There's been a lot of back and forth about this. From what I understand our cars don't use "blow-off" valves. They use "diverter" valves or something like that. I think blowoff valces dont really do anything for the car besides the cool sound.

Charge pipes, dual cone intakes help.
Either way I plan on getting a nice loud BOV for mine.Good luck and Let us know how yours turns out. post a vid.