Now I'm part of the "where did my boost go" club....

[Chaski]

Fair warning - I am stating my lost of boost before actually giving the car a proper inspection. I don't have a way to get under it at work. I acknowledge that this is a dick move to ask for advice before trying to fix the problem myself. I'm over 100 miles away from my tools.

19' with Whoosh hybrid and accoutrements (Kompact plumb back BOV, V3 cooler, 14psi wastegate, Dizzy tune).

When I floor it the car lacks power and it sounds like the BOV is going wide open. Normal driving (0 boost to 15 psi) everything is good- no boost leak sounds. Floor it and it peaks out around 20-22 psi and sounds like it is just pissing air from somewhere. Car was kicking ass and taking names last week. This is something new.

Got any suggestions on where to start troubleshooting?

 

[Bizzareo]

Are you showing any codes / CEL? The AP will show you codes.

https://www.fiestastforum.com/threads/chasing-p0246.24197/

(still chasing my issues, going in to check wiring and turbo tomorrow)

 

[Chaski]

Zero codes thrown- I'm going to chew through that link you posted later today.

 

[MagnetiseST]

I think one of your vacuum lines somewhere is split, or a coupler is loose. You wouldn't hear a whistling or whooshing noise of any kind if there was no boost leak

 

[DAW]

Check vac lines too can only be a few things

 

[jayrod1980]

Hose could have blown loose, I’ve had that.

 

[Chaski]

All better!
I fat fingered one of the quick disconnects on the intake manifold post radiator install. Looked okay at a glance, but it was not latched. Doh!

Now the Fiesta is back to being festive.

 

[PunkST]

Ill definitely check mine tonight. May as well given what it went through.

 

[Rhinoserious]

Thanks for pointing that out - I've had some lacking boost since installing my catch can, and I looked at the hose connections in the picture above. One of the clasping mishimoto connectors on the end was on wrong, I had to twist it to latch correctly. I suppose I'll see if it's better tomorrow.