atr

i have s set of atr headers . They have 1/8" bungs welded a 1 1/2" from the port for EGTs . If you don't want them you will have to buy 6 1/8" npt plugs . I ran these for along time and they have been awesome . $600 shipped within the country

I acquired a ATR blow off valve or anti sneeze valve .im looking for the instructions for it . It has 2 ports like a wastegate which I've only seen BOV with one . How do I route the vacuum/boost line to it