Turbo flutters on startup

[bclee55]

Hi there,

I'm not sure if this is normal or not, but I can hear the turbo flutters in my 2018 touring sedan inside the cabin on startup more and more now. I don't hear it on a cold start in the mornings. I hear it more when I'm running errands, starting and stopping the engine.

The only mods I have is ktuner v1.2 duo stage tune.

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[CVCTURBO]

Turbo flutter happens when the boost pressure builds up and there is no where for it to go, like if there was no BOV or DV. Either your DV is stuck (not likely bc I'd imagine it would set some type of code, and there shouldn't be any boost made on start up in the first place) or your hearing a different noise from else where.

Any other mods?
And a video of the noise would help me diag the cause possibly

 

[bclee55]

Turbo flutter happens when the boost pressure builds up and there is no where for it to go, like if there was no BOV or DV. Either your DV is stuck (not likely bc I'd imagine it would set some type of code, and there shouldn't be any boost made on start up in the first place) or your hearing a different noise from else where.

Any other mods?
And a video of the noise would help me diag the cause possibly

I don't have any other engine mods besides the Ktuner. I'll get a sound clip up tonight after work.

 

[CVCTURBO]

I don't have any other engine mods besides the Ktuner. I'll get a sound clip up tonight after work.

Ok tag me @CVCTURBO

 

[bclee55]

@CVCTURBO here's the link the the clip.

I wasn't able to upload it on here cuz of the size. You can hear the flutter around the 3 second mark.

 

[CVCTURBO]

@CVCTURBO here's the link the the clip.

I wasn't able to upload it on here cuz of the size. You can hear the flutter around the 3 second mark.

Unfortunately I can't hear anything over the door chime, when you get a chance try it again with the door closed

 

[Troy Jollimore]

I could just barely hear it. You sure that’s the turbo?

 

[bclee55]

Unfortunately I can't hear anything over the door chime, when you get a chance try it again with the door closed

@CVCTURBO I'll do another clip tonight.

 

[bclee55]

I could just barely hear it. You sure that’s the turbo?

I'm guessing so. Not sure what else in the car would flutter like that.

 

[Troy Jollimore]

Try using the remote starter while listening in the engine bay with the hood up? Would probably be a good spot to record the noise, as well.

 

[bclee55]

Here's another sound clip @CVCTURBO

 

[bclee55]

Try using the remote starter while listening in the engine bay with the hood up? Would probably be a good spot to record the noise, as well.

@Troy Jollimore I tried doing this, but the car won't lock for me to remote start it. I just posted another sound clip

 

[CVCTURBO]

Here's another sound clip @CVCTURBO

Ahh yeah that definitely sounds odd. Sounds like early engine knocking like starving for oil for a second... BUT usually knocking happens at all rpms when severe.
How many miles and what exact oil do you use?

 

[Troy Jollimore]

Couldn’t hear anything that time. I was afraid of that. There should be a hood sensor switch you can trip that will let you lock and start the car. Or get someone else to do it while you record.

 

[bclee55]

Couldn’t hear anything that time. I was afraid of that. There should be a hood sensor switch you can trip that will let you lock and start the car. Or get someone else to do it while you record.

I'll try to do that again this weekend.

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