I was driving today on the highway and decided to open it up a little but when i got to around 4500 rpms i got this really obnoxious, and quite alarming whining noise. Any idea of what it could be?

 

Your turbo spooling up?

 

how long have you had your car??

 

no lol its not my turbo, ive had my car since may just about

 

well what mods do you have?

 

this may be a ground noise

 

+1..
since I have installed my FMIC pipes and intake the "whining" or whistleng is very loud.

 

+2 on that

and i love that sound

 

Check for shaft play in your turbo. When they start to go bad the sound of the compressor blades rubbing the housing is similar to a hairdryer on crack. You could also have a boost leak some where.

 

Maybe its the transfer case? or the X's don't have this problem?

 

I have heard the whining on my X also. When i got the reflash I told the dealer and they checked for abnormal noise. They said there was no abnormal noise at this time but i got it documented on paper for next time.(when something does go wrong )

 

Is it the whistling noise coming from your UICP. After I installed the Nisei UICP there is a whistling type noise coming from the UICP under boost.

 

i pray to god its not my turbo, and jdm when do you hear the whining? and idk about the UICP caus its sounds way more than a whistle its definately a whining, it could possibly be my transfer case to idk, im gunna do it again tonight and see if it whines

 

I thinks it's more like the transfer case. It's not Turbo noise or road noise...

 

I've been getting an occasional whining noise as well on my 09 RA with the SST. sounds like gear noise to me, like the front diff or transfercase gearing. mostly on deceleration and only once in a while. and nor really driving that fast. anyone else?