the car doesnt have the egr, smog pump, air, its an 85 trans am with the 305 L69 HO with the q-jet and T5 tranny.
I know the computer still controls something with the distributer, but what?
would i benefit from removing the computer altogether and installing a new carb & distributer? thanks for any imput

 

Yes, your car uses the computer. It monitors the oxygen sensor for anything under about 50% throttle to modify the air-fuel tweak to optimum mileage and minimum emissions. It does this by clicking a solenoid (called the MCS: Mixture Control Solenoid) that bounces the primary metering rods up & down. The duty cycle changes, causing the primary jets to flow more or less fuel.

The cool part of this design is that for around-town and cruising conditions, your carburator stays tuned to yield optimum mileage and minimum stink. Yet, at wide-open throttle, the carb in essence reverts to the fully mechanical secondaries, where the secondary metering rods determine the air-fuel ratio. You can swap the secondary metering rods yourself at the track in less than sixty seconds.

The computer also monitors a knock sensor that is mounted to the right-side of the block in the water jacket. If the knock sensor senses detonation, it will retard the timing a few degrees, then attempt to advance back once the detonation is gone. In addition, the computer controlled distributor has no springs or weights to advance the spark. The computer uses the tach input and throttle position to determine engine RPM and load, then uses a lookup table to determine how much advance to dial into the ignition.

I'm using my original computer-controlled Quadrajet and ignition, actually. It's a 1984 305H.O. A4 applicaiton that now runs 14 flat at 101 MPH. The CLCC Qjet and ignition are not necessarily a problem when it comes to performance.