i have just fitted a dump valve and seems like the boost has gone down slightly from 0,9 to 0,7 bar,then tails off to 0.5. but it feels like its still pulling well if not better.is this possible? what is a standard jap 95 wrx maximum(safe) boost with no mods exept cone filter an backbox.an no mods in the near future planned..any idea apreciated

 

if it leaks it can ..... what brand

 

its a group a, its very tight ,i think it barely opens on full boost you cant hear it over the air filter just a slight noise

 

not sure mate but i put a std 1 back on and the girlfriend dose not headbutt the dash when i changer gear now
ive been having boost probs to and im sure this is down to the BOV i had on but could be wrong ..........sry not much help try the serch mate there loads to be read in there