Whistle/Whine noise while under boost
#16
Evolved Member
iTrader: (28)
Join Date: Apr 2007
Location: Florida
Posts: 1,618
Likes: 0
Received 0 Likes
on
0 Posts
Hey guys,
I am kind of a noob when it comes to Evo's, so I need your help. I just bought a '06 Evo IX MR from the BMW dealer a couple days ago and I have been getting a kind of whistle/whine from the engine bay while under boost.
Sounds like this:
http://www.youtube.com/watch?v=F_FXe...eature=related (not my video or car)
The car appears to be stock except for a badge on the back that says Dyno-Comp tuned. I am thinking that it is running lean because it was tuned with some upgrades and then put back to stock for trade in...
What do you all think? Thanks in advance!
I am kind of a noob when it comes to Evo's, so I need your help. I just bought a '06 Evo IX MR from the BMW dealer a couple days ago and I have been getting a kind of whistle/whine from the engine bay while under boost.
Sounds like this:
http://www.youtube.com/watch?v=F_FXe...eature=related (not my video or car)
The car appears to be stock except for a badge on the back that says Dyno-Comp tuned. I am thinking that it is running lean because it was tuned with some upgrades and then put back to stock for trade in...
What do you all think? Thanks in advance!
When I got mine tuned my turbo screamed so loud it was ear piercing.
You may be more pronounced if you have a drop in filter so pop open the intake and check it out. You have nothing to worry about, dont go to the dealer period unless you have to, or you are buying parts to DYI.
Last edited by 06MRV8Killer; Jul 14, 2008 at 08:14 AM.
#17
Evolved Member
iTrader: (7)
Join Date: Sep 2004
Location: South Beach, FL / Miami, FL / Pt. St. Lucie, FL / NYC
Posts: 1,457
Likes: 0
Received 0 Likes
on
0 Posts
If you feel comfortable with it take it to a local shop and see if they can do a boost leak test but I'm telling u there is nothing wrong. Turbo's are load and even louder with stock exhaust so all u hear is the motor hum and the turbo scream
#21
![Thumbs Up](https://www.evolutionm.net/forums/images/smilies/smilie_thumbsup.gif)
#22
Evolved Member
iTrader: (28)
Join Date: Apr 2007
Location: Florida
Posts: 1,618
Likes: 0
Received 0 Likes
on
0 Posts
NP, Did you look over the whole car, all the bolts where bolt-ons would go to see if they have been taken on or off, this will tell you if the car had more mods on it before which would more than likely confirm that it is flashed.
As mentioned before the best thing to do to see if it is flashed is to buy a tactrix cable and down load evoscan, pull the map and compare it to stock.
As mentioned before the best thing to do to see if it is flashed is to buy a tactrix cable and down load evoscan, pull the map and compare it to stock.
#25
NP, Did you look over the whole car, all the bolts where bolt-ons would go to see if they have been taken on or off, this will tell you if the car had more mods on it before which would more than likely confirm that it is flashed.
As mentioned before the best thing to do to see if it is flashed is to buy a tactrix cable and down load evoscan, pull the map and compare it to stock.
As mentioned before the best thing to do to see if it is flashed is to buy a tactrix cable and down load evoscan, pull the map and compare it to stock.
I think I need to put the exhuast back on.
![Wink](https://www.evolutionm.net/forums/images/smilies/wink.gif)
#26
Evolved Member
iTrader: (7)
Do a boost leak test first.
But by the sound of it I would say you turbo may be going. Mine sounded similar on spool up. Made all the same power and everything, but it was done. Thrust bearing went. The whirring sound is most likely the compressor rubbing against the housing on spoolup because of too much shaft play. Pull the intake, see if the play is excessive. It's hard to say sometimes though..
But boost leak test first for sure.
But by the sound of it I would say you turbo may be going. Mine sounded similar on spool up. Made all the same power and everything, but it was done. Thrust bearing went. The whirring sound is most likely the compressor rubbing against the housing on spoolup because of too much shaft play. Pull the intake, see if the play is excessive. It's hard to say sometimes though..
But boost leak test first for sure.
#27
Evolved Member
iTrader: (28)
Join Date: Apr 2007
Location: Florida
Posts: 1,618
Likes: 0
Received 0 Likes
on
0 Posts
Why dont you to actually read the posts? ^
Good idea
Ok, so I was able to find out that it has been tuned... with Turbo back exhaust (it has stock back on now), high flow fuel pump, and drop in filter and was putting down about 291hp to the wheels.
I think I need to put the exhuast back on.
becuase it is tuned for that. That's what I am telling my wife anyway... ha-ha
I think I need to put the exhuast back on.
![Wink](https://www.evolutionm.net/forums/images/smilies/wink.gif)
Thread
Thread Starter
Forum
Replies
Last Post
nonschlont
Evo Engine / Turbo / Drivetrain
10
Apr 16, 2009 07:59 PM