I first installed a EBC and i wasnt able to control boost properly.it was either to high boost or to low.i uninstalled and installed a MBC. its been going up between 20-21psi and falls to about 12psi. I've checked hoses and piping doesnt seem to be leaking. i connected everything back to stock and boost stays between 10-12psi no more no less. i finaly came to the conclusion it might be the BOV gone bad. anybodies help will be appreciated thank you.

 

well atleast I'm not the only one with this problem!
if you havent already figured out!
the boost your running is only from the wastegate!
r u running the stock hose to BCS?
there is actually a restrictor (brass) on the turbo hose. than the T fitting (other side connected to wastegate) into the middle inlet on the BCS.
if your only running 10-12psi, your BCS is not getting the right reading which should go to your stock ECU.
well, thats pretty much what I know!
hope it helps!

 

That Happen To Me, My Car Peak 26psi Leak Down To 17psi , After Lots Of Time On Shop, We Find Out That The Blowoff Was Opening On 18psi. Donīt Know Why Because I Change Stock And Buy Tomei Blowoff For The Same Reason.

Well I Hope You Find The Problem

Jef

 

yea BOV can do that