New sounds from the turbo

[Glassdude]

After installing the tuner and intake I notice that occasionally the turbo makes a strange sound after the tranny shifts to OD. It sounds like air brakes releasing. At first I didn't think it was anything to worry about and I didn't notice it before with the stock intake. Is this a normal sound, what causes it, and do i need to worry about it?

Mike

 

[Mike]

Wastegate prolly..............

 

[Glassdude]

Wastegate prolly..............

That is kinda what I thought but the boost is normally under 20lbs. Does it open up that early?

 

[Mike]

I thought it was suposed to dump in the 22-25 psi range. Maybe you have MAP sensor issues too?

 

[kwazyca]

After installing the tuner and intake I notice that occasionally the turbo makes a strange sound after the tranny shifts to OD. It sounds like air brakes releasing. At first I didn't think it was anything to worry about and I didn't notice it before with the stock intake. Is this a normal sound, what causes it, and do i need to worry about it?

Mike

Turbo stall. Normal.

Tom

 

[Glassdude]

Turbo stall. Normal.

Tom

I thought turbo surge and turbo stall were bad things. It seems that it is bleeding of excess boost if that makes sense. The boost gauge drops to under 5 when it happens. Is air being forced back thru the turbo?

 

[Ghostrider304]

Yes it can be bad, but that depends on how you drive. Hard take offs make for boost that can not be used by the motor. When you let off the throttle the boost runs back out the same way it came in. This can be bad if the turbo stalls hard, it could at the worst brake the shaft.

A Wicked Wheel, or ported intake housing would fix the surge. I added the wicked wheel when I did my chip.

Hope this helps,
Will-

 

[Glassdude]

Sounds like a Wicked Wheel in my future. Thanks guys

Mike