There's something wrong with my turbos.

[Jeef Beef]

I noticed today when driving with windows down that there is this whining noise coming from my car when I accelerate through 1st and 2nd gear. Beyond that the wind noise is too much to hear it. The noise is VERY noticeable in enclosed places like carparks.

I know for certain that this noise was not present before. It's sort of a high pitched whine when the turbos start to spool up. There's no loss in performance, but I'm too afraid to got WOT now. Time for dealership visit?

PS. I did a forum search for the topic and most replies seem to be that 'it's just turbo spool'. I know for sure that it isn't - I've had DCIs in my car for over 9 months and the turbos make a loud 'wooshing' sound but never anything close to this whine I'm getting. Sorta even sounds like a supercharger.

[oman135]

i have the turbo whine but its not too loud

[instag8tr]

Turbos are going out

[bryce]

Originally Posted by instag8tr

Turbos are going out

best bet is to go back to stock, dealer it. there's youtube videos of 335i's w/ turbo whine, not long before the turbo's crapped out.

[Daniel135i]

Originally Posted by instag8tr

Turbos are going out

If I remember correctly these turbos use journal bearings which dont last as well as ball bearing CHRAs. It will probably be cheaper in the long run if it is the turbos to get new turbos than to fix stock turbos from BMW.

[oman135]

I have little whine siund is it normal ? I guess all turbo cars have little whine sound

[oman135]

I have little whine sound is it normal ? I guess all turbo cars have little whine sound

[Daniel135i]

some whine yes, its a natural sound the turbos make when spooling up. Too much sound when it gets harsh is a sound of the CHRA about to go from over wear/overheat and soon.

[Jeef Beef]

Originally Posted by instag8tr

Turbos are going out

Originally Posted by bryce

best bet is to go back to stock, dealer it. there's youtube videos of 335i's w/ turbo whine, not long before the turbo's crapped out.

This is what I was afraid of. I can hear the supercharger like whine only if I have the windows down and I'm accelerating lightly in first or second.

Originally Posted by Daniel135i

some whine yes, its a natural sound the turbos make when spooling up. Too much sound when it gets harsh is a sound of the CHRA about to go from over wear/overheat and soon.

The sound is not excessive, but it doesn't sound healthy to me. My mates on the Australian forums seem to think it's normal because a lot of them said they've had the sound for a while now with no ill effects.

[Daniel135i]

Best safe thing is to have BMW run a diagnostic and check the oil for wear particulates.

[Bdh821]

Not trying to steal you thread, but nobody commented on my thread. I've had a dci and jb3 on the car for some time now. As of recent, my turbos don't spool as loud anymore. The car still feels just as fast just not as much spool. Any ideas? Thanks