[JohnStranahan]

hocky-I am using the stock Mass Air Flow Sensor in a much larger Cosworth tube. Why do you think this will negate gains. The Cosworth manifold which seems to be the only one available works similarly. It has gains. The main gain I am looking for are due to increased air velocity from the throttle bodies at part throttle. The air jets from the partly closed throttle bodies will be right in the runners keeping the air speed up and then increased high rpm power from the ability to flow more air. The computer seems to be quite flexible.


The engine does use an Manifold Absolute Pressure sensor in conjunction with an Inlet Air Temperature sensor (MAP/IAT)to calculate engine load. Among other things probably this sensor lets the computer calculate when to open the runner tuning butterflies that open at approximately 3000 RPM. There has to also be some kind of base fuel map that the computer modifies in a closed loop using the O2 sensors on the exhaust.
John