Someone has been fiddling with it ?

It needs mapping ?

dunx

 

Have you fitted any new parts recently I.e. decat etc?

Have you tried cleaning the boost solenoid? If not do a search on here to find out how. Sorted my over boost out before.

 

Is it a WRX or an STi ?

Shaun

 

check the small turbo hoses for splits/damage, clean the solenoid, and if it's lying around fit the std. DV...... worth a try.

dunx

 

Sounds like a boost solenoid problem / split pipe to me

Did you swap the OEM 2 port for a 3 port before mapping ??

Have you recently topped up the oil ?

Shaun

 

clean solenoid out with brake cleaner and check for teared or ripped hoses and no loose hoses also check your maf, coilpacks etc

 

Did the problem start after the service, pipe could be loose or too much oil has clogged the boost solenoid.

The reason I ask about the solenoid is that I've got an almost new (and known to work) bugeye 2 port solenoid. If you have problems cleaning your's I'll try and find it and send it to swap and see if it makes a difference.

I wonder if a sticking actuator arm could also be the culprit. unlikely to be the MAF as the Bugeye MAF pretty tough,

Shaun

 

Turbosmart supersonic blow off valve, did u have this fitted when it was serviced mate

 

UK300Scoob has told you how to clean it and as I said: do a search to find out how to.

 

Fit back to standard first and easy to do option.

 

some 1 tell the man how to clean his solenoid FFS!






























plus i want to know!

 

Type " cleaning boost solenoid " into the search function! It will give you some help.