i had an hks boost controller on my car which i had removed, since then my car hits 4.5k & there is no more boost, its like hitting a brick wall, smoke out of exhaust, ive made sure the boost pipes are in the right place, the actuator feels a bit weak, i can move it easily with one hand, ive tried a 3 port solenoid & that makes no difference, would a dawes device cure my problem? really starting to do my head in now, should i have a restrictor in one of the pipes, if so which one & should i be able to see/feel it? if anyone can help who lives in lancashire i would really appreciate them taking a look

 

should have a restrictor when 2port on, between T piece and compressor cover..

do you have a boost gague and therefore can see if it is hitting boost cut?

Simon

 

will plumb in boost gauge what point is boost cut? can i see the restrictor, is it in the small length of pipe from t piece to cover,if i dont have restrictor will this be causing my problem? where do i buy suitable restrictor from? sorry for all questions

 

yes it is in the small length of pipe.. yes you can see it.. just a small metal tube with a small hole in.. you can get them from dealer or make your own.

Yes it could cause the problem but until you get boost gauge on there, we dunno if it is hitting boost cut or not.

Simon

 

its not hitting boost cut it boosts to 1 notch past 0, its in bar, there is no restrictors in any pipes could this stop it boosting?

 

As far as i'm aware you should have a restrictor in the thinner tube from the boost solenoid, its possible your ecu is reading ether high vacuum or pressure and won't allow your turbo to produce boost (failsafe)
Advise a quick phone call to subaru may help.

ps You cant see the restrictor because its inside the pipe so you have to feel your way along the pipe to find it

 

when i had boost controller on all pipes were different so they all had to be replaced, thats why i know i have no restrictor