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Boosting issues

Tom_ST
Tom_ST
in Ford Fiesta Club

Featured Replies

I have 2014 fiesta ST 

MODS: 

Airtec stage 2 induction kit 

VUDU symposer delete 

turbo smart plumb back recirc BOV

when I first start the car and boost the car on 3k revs I get around 15 psi and then the car seems to lose and extreme amount of power and the will boost consistently at 5 psi. 
however, even when i am not on boost and  put 100% throttle between 1.5k and 3k onwards I got 5psi. 
FYI- I have all turbo sounds WHOOSH the lot.  

 

can anyone please help me out as I have pretty much have no boost. 

Edited by Tom_ST

  • Quote


    Hole in one of the pipes? 

    Has someone fitted an aftermarket dump valve (previous owner)?

    Are you sure the VUDU symposer delete was fitted properly? This seems to interfere with boost, so especially if not fitted correctly could be the problem. 

  • Quote
    • Author

    This was happening before installation of the BOV and symposer. 
    🤷🏻‍♂️

    car is doing my head in 😩😩😩

     

  • Quote

    Intercooler pipe popped off or even a crack/hole in the intercooler?

  • Quote
    • Author
    On 8/19/2020 at 10:15 PM, MasterTechTip said:

    Intercooler pipe popped off or even a crack/hole in the intercooler?

    Already checked them. One was lose but sorted it out. 
     

    I think it maybe wastegate or boost solenoid related 

     

  • Quote

    Hmmm could be the vacuum control solenoid on the back of the engine next to the turbo. I've had one fail on a stage 3 fiesta st but this was putting the engine light on and code for underboost

  • Quote

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