what causes boost creep bit of info please so i can sort it . im running a garret gt 28 35 and a two inch up pipe when on full boost the car goes perfect but sometimes for no apparent reason it creeps point 1 bar sometimes as much as 1and a half it never does it for very long as my hks evc is set to cut at 2 secs overboost any ideas cheers...

 

check pipes have no holes

and the solenoid is free from oil and dirt

if its intermitent i would say the was prob a bit of gunk in the boost solenoid

 

the solenoid is no longer in use as it has an hks boost controler which has filters on all of the pipes they are all changed regularly so wouldnt of thought it could be that as for pipes ive checked and double checked cant find any holes in them any other ideas ..