Whistle/Whine noise while under boost
Jul 13, 2008, 08:32 PM
#1
Whistle/Whine noise while under boost
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!
Last edited by jzapatajr; Jul 13, 2008 at 09:12 PM. Reason: .
Jul 13, 2008, 09:09 PM
#7
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probably your throttle body leaking air, do a boost leak test and see if it's coming from your throttle spring located on you TB...
had this leak aswell as other newer Evo's. Changed the old gaskets out with WORKS apperture gaskets and no more whistle. The old gaskets only old 7psi while the WORKS hold 25+...
search.
had this leak aswell as other newer Evo's. Changed the old gaskets out with WORKS apperture gaskets and no more whistle. The old gaskets only old 7psi while the WORKS hold 25+...
search.
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Jul 14, 2008, 07:41 AM
#11
Are you modded at all?
I would recommend try doing a boost leak test yourself before taking it into Mits, especially if you are modded.
If your stock, and your dealership where you live isn't a ***** (which is highly unlikely), then take her in.
Here is a guide on how to make the boost leak tester:
http://www.vfaq.com/mods/ICtester.html
I would recommend try doing a boost leak test yourself before taking it into Mits, especially if you are modded.
If your stock, and your dealership where you live isn't a ***** (which is highly unlikely), then take her in.
Here is a guide on how to make the boost leak tester:
http://www.vfaq.com/mods/ICtester.html
Jul 14, 2008, 07:53 AM
#12
Are you modded at all?
I would recommend try doing a boost leak test yourself before taking it into Mits, especially if you are modded.
If your stock, and your dealership where you live isn't a ***** (which is highly unlikely), then take her in.
Here is a guide on how to make the boost leak tester:
http://www.vfaq.com/mods/ICtester.html
I would recommend try doing a boost leak test yourself before taking it into Mits, especially if you are modded.
If your stock, and your dealership where you live isn't a ***** (which is highly unlikely), then take her in.
Here is a guide on how to make the boost leak tester:
http://www.vfaq.com/mods/ICtester.html
Jul 14, 2008, 07:59 AM
#13
I would say call the tuner and get as much info on the car as you can from him.
Use what you get from that, and I would recommend making that boost leak tester anyways.
It's easy, cheap, and you may need it down the line.
All else fails, take it in to Mits.
Keep us posted!
Use what you get from that, and I would recommend making that boost leak tester anyways.
It's easy, cheap, and you may need it down the line.
All else fails, take it in to Mits.
Keep us posted!
Jul 14, 2008, 08:03 AM
#14
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If the car is stock then there is nothing wrong with the car. When I bought my 03 and 05 they both made the whining or whistling noise under boost. It's from the stock airbox. A boost leak if you hear it is going to be very noticiable as a leak. But to play on the safe side get urself boost leak tested. But I'm going to say it's the stock airbox. It's normal
Jul 14, 2008, 08:10 AM
#15
If the car is stock then there is nothing wrong with the car. When I bought my 03 and 05 they both made the whining or whistling noise under boost. It's from the stock airbox. A boost leak if you hear it is going to be very noticiable as a leak. But to play on the safe side get urself boost leak tested. But I'm going to say it's the stock airbox. It's normal
The thing that was bothering me is that badge in the back Dyno-comp tuned and if it was tuned to have aftermarket parts and then put back to stock, there might be some issues with that.
