turbo not holding boost

[daniel bendhiaf]

Hi I have a 2003 bugeye wrx and my boost is not holding?

You can hear the turbo spooling and dropping about 3 times before holding on full boost?

Have checked all pipes and replaced a couple if anyone could help as really annoying

Thanks dan

[Jay762]

could be not spooling up - worn bearings, actuator not working / leaking which means will not come up to full boost steadily as boost will be bled off

 

leak some where bleeding boost off

 

do you have a variable boost device fitted that could be failing also?

 

are there any engine fault codes being generated?

[daniel bendhiaf]

No verible boost and no fault codes

And have taking all intercooler off n.checked all pipes

And turbo defo spins up as can hear it and feel ir boosting then drops acouple of times

Might have to try actuators as a couple of people have said that

[Scooby Pete]

Sounds like it might be over boosting or over fueling.

When you replaced the pipes did you replace them with same size pipes and refitted the restrictors?

[daniel bendhiaf]

The only one that was split was the main intake pipe. Filter to turbo.

[Scooby Pete]

sorry thats all I had. hopefully some tech guru can shed some light.