No turbo sound in Park or Neutral?

[Charleston335i]

I have DCI and when i floor it when N or P I can only hear the engine? Are turbos not supposed to spool in Neutral? I saw videos on intakes and I can hear them? I have AT by the way.

[robroy72]

I have DCI and when i floor it when N or P I can only hear the engine? Are turbos not supposed to spool in Neutral? I saw videos on intakes and I can hear them? I have AT by the way.

eh ... ok

Turbo's use a build up of gas in order to spool up; when you're 'reving' in neutral or park, they won't have sufficient time to spool up in a manner that would allow you to hear them.

[Charleston335i]

I was wondering how BMS got that whoosh sound in their youtube DCI vids lol.

[robroy72]

I assume what you heard was probably a recirc valve venting back through the intake.

[mattjw916]

revving an engine in neutral with no load on it is bad anyway...

[Shieldze1025]

You'll hear it if you actually accelerate. There's not backpressure from the drivetrain so the engine isn't really "working". They're spooling but nowhere near as fast.

Listen between 2-4k rpms, you'll hear it.

[iXguy]

I remember people burning out their clutch packs in E32's and E34's by revving in neutral.

Nothing $4k couldn't fix, mind you.

I'm sure modern cars don't have that problem. But I bet the owners of those cars were sure surprised.

[Rydicule]

Funny thing... even under heavy throttle while driving, I still don't really ever hear the turbos like I do in other turbo cars...