grate. there is a guy on here that helped me a ton. his name on here is NAJ. when i had the same problem as you i just redid my entire vac line setup. here is a diagram of what i did.
just replace the wastgate valve with a G valve and your set.
when i redid my lines i went to a hydrolic store and made a vac block from brass fittings. i also got 1/8 inch hard plastic line not soft rubber tube. this keeps every thing consistent.
as for a G valve i made my oun.
i used a spring out of an old pen
now that i have no air box. i just let my BOV sit there in the open.
i really hope this helps you out. if it dose let me know. i always like to hear if things go good.
talk to you latter:
Anthony Marcotte