• Sign Up! To view all forums and unlock additional cool features

    Welcome to the #1 Fiesta ST Forum and Fiesta ST community dedicated to Fiesta ST owners and enthusiasts. Register for an account, it's free and it's easy, so don't hesitate to join the Fiesta ST Forum today!


Does this sound like a boost leak? (video)

Messages
50
Likes
15
Location
NJ
#1
Just had my timing belt and water pump done. Turbo noises seem way louder than I remember and I feel like the car doesn’t feel as quick as I remember. Usually have no problem kicking on the traction control light if I punch it - lately no traction control light and the car feels a little sluggish.

See video - when I go WOT I’m getting what sounds like the A/C turning on from the engine bay. https://streamable.com/dwkoe1

I hooked up my Cobb AP and the most boost I am getting is around 18.3. Any thoughts as to whether or not it seems like I have a boost leak or if I’m just imagining things?

2015 ST with 70k miles with stage 1 Dizzy Tune. No CEL, idles fine, no excessive smoke from exhaust.
 


XR650R

2000 Post Club
Premium Account
Messages
2,691
Likes
3,108
Location
Eerie
#2
Sounds like a boost leak to me. Your problems with the traction control light and the A/C turning on indicate the the Bozo who installed all that stuff really didn't do such a great job.
 




Top