Quote:
Originally Posted by HighlandPete
Your comments on intake sound has surprised me. Induction in my F11 N55 is virtually silent, in all conditions. I simply get a subdued exhaust rasp under full load at decent revs.
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At low to mid rpms the engine is exactly what I expect.
But from about 5500rpm to redline, there is a distinct rasp/a slight growl.
I assumed this emanated from the intake system, as it seems to come from up front and I thought the exhaust to be practically silent.
Had a loaner N55 X5 last month that sounded just about the same...
The sound is reminiscent of a Cold air/short ram intake, though much more muted.
I now have the M Performance exhaust and don’t hear the intake sound anymore.
Perhaps the high rpm growl was never that significant at all. Maybe I am a touch hypersensitive here. I generally dislike induction sound. I prefer valvetrain and/or exhaust noise. My mother’s 3.6 CTS sounds eerily similar at high rpms. Still the F10 induction sound is more aggressive than both my N52 330i and N54 535i, during those last few hundred rpms.
Surly73 seems to have a similar experience regarding N52 vs N55 sounds...
HighlandPete, if I recall correctly, didn’t you have a E90 in the past?
You don’t feel the E90 was quieter near redline?
My first full throttle romp in my F10 prompted two thoughts.
1. “My E60 might be faster.”
2. “Wow! These new ones sound sporty up high.”
But again, it’s not obtrusive, just more than I’d anticipated. Take that with a grain of salt though, because I am particularly critical of induction sounds.