has anyone added a fifth injector in a n/a or tii

 

Lots of people have... I think they add a bung, then use a REbic or other controller for it.

 

where can I get a controller for it, and how much? I was thinking of doing this, since I have to places for injectors in my IC piping. but then I saw the HKS controller was like $1200.

cool. I'm getting excited