I‘ve got a tuned N55 and to be quite honest this thing just likes to guzzle no matter how I drive it. I‘ve heard people say they get good fuel economy on their tuned N55s but man mine just drinks like a stepdad no matter what. I‘ve checked for vacuum/boost leaks, cleaned the injectors, the whole nine, nothing seems to help. If anyone in this thread might know what’s up then feel free to let me know cause it is a bit annoying