Strange whine from turbo and no leak on exhaust side for mcxpress turbo apex

[johnvokey]

My 2007 mcxpress turbo apex 290hp kit is making a strange whining noise from the turbo, as a result I'm experiencing a larger pop from the bottom end as well as an increase in turbo lag. It's sounds a lot like a supercharger whine. Could it be because of and issues with the boost altitude compensator or from
running lean? Thoughts?

 

[givemeaboost]

Check it for side play and see if it has been rubbing the compressor housing. It sounds like mine did when the bearings went out.


Ken...............

 

[channonmanuel]

Maybe a boost leak


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[Nytroman]

I think givemeaboost is right on track

 

[johnvokey]

It's nothing to do with the turbo it's tight, and not a ball bearing turbo, is there any place they tend to leak on the intake side?

 

[4x4racing]

More then likely boost side

 

[johnvokey]

Hears the sound it's making only video I have http://m.youtube.com/watch?v=GFtNcaaYTNc

 

[bigfish]

that is your turbo sucking air sounds like intake side,but it does not sound too abnormal to me.is your pop as you get on the throttle or a little after

 

[johnvokey]

It's pops just before boost comes in I'm pretty sure it's due to improper spark plug gaping and it's not the Intake sucking in air it's a boost leak for sure I had it all apart a few day ago and I couldn't find a boost leak on the entire exhaust side, I'm going to take the whole kit off and leak test both the boosted and the exhaust side see what I find out.