The Q bolts right up to any standard TiAL flange so you can upgrade without having to re-weld. Through countless hours of R&D we were able to make the same size valve flow a staggering 60% more than the original design - that means 60% more air is blown off per cycle! This is the highest flowing BOV on the market. The Q will be offered in all of the current colors. Please Note: Most colors are special order and will take additional time to ship. Spring pressure is 11psi which is suitable for most applications, please contact us for additional information.