Hey hows it going. i have a 91 4runner with a 22re installed from a fresh swap. My issure is the motor runs really rough. I have already changed the afm and o2 sensors and im still scratching my head. I started messing with the vacum lines and removed the three prong plugs covers on the intake plenum which seemed to lean out the idle a little, then unhooked the break booster vacum line and the motor instantly leaned out and started to idle fine. Is this just a faulty break booster or something more to it, thanks