Quote:
Originally Posted by bradley
corey did the prom for the car. we tried to different types of map sensors per coreys suggestion . what about the port throttle seinoid is it still in the circuit or not ????????
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Although I have no direct experience with this mod, I always thought you had to keep the vacuum pump connected to the map sensor for the secondaries. The port solenoid has no feedback to the ecm so it doesn't even know it isn't there. That's why the vacuum sensor is under the ecm- to check to see if the secondaries are getting vacuum. be sure to hook it up to the pump, not manifold vacuum.