its is a boost controller that one of our toymods members has made and selling
they allow you to bing your boost on realy fast and have control over it, control boost spike ect ect!!! these controllers are more accurite than any controller that i've ever used!!!!
and am able to tune down to .1 PSI ie 14.1 psi can be adjusted to 14.2 and if you like you close the last valve and it will hold the boost to where you set it as well!!!!
another advantage of it is when you flat change gears your boost dosnt go limp boost comes on hard?? hard to explain that one...