Hello got a STi 2002

Today im having problems, Always runs 1.5 bar.

Now only running 0.6bar and at about 5k will hit just under a bar.

Basically i was out testing it driving along ignition of then back and would get 1.5bar for a split second

Also had it fine for about 5-6miles then goes back and forth?

Any ideas thanks

 

Anyone please?

 

Surely people have experience with these problems?

 

have you a split/ leak in the vacum hose coming off the Compressor housing? check along it where it has a T piece and all the way over to the Boost Solenoid

 

Any other info on the car ?

Fuel changed recently ?
Mapped ?
Mods ? any recent changes ?

 

I Cant see it being a boost leak as it seems more electrical

Mapped by jolygreenmonster

I did use tesco fuel other day normally use shell but i have done this befor and no problems

 

Would a boost solonoid cause these problems?

If so where can this be found? and what shall i do with it?