1994 Toyota Pickup hesitation/stuttering while driving at a

I have read through some of the appropriate threads and am going to check the airmass sensor as well as for air intake components that I have not already replaced.
the car has a new air filter, plugs, cap, rotor, and plug wires. (Except for the filter all Toyota parts)

After driving the car for some distance. It will stutter; the RPM gauge will drop down sometimes to 0 and then recover itself almost immediately. When the gauge is indicating this the combustion power is gone and the check engine light comes on for a brief flash) upon recovery the truck performs as normal. It is an unpredictable occurrence. Driving hard, soft, idling does not seem to affect the occurence.

At times if you are not rolling or if you are coming to a stop it will kill the motor.

this is what caused me to "tune up" the car and upon hearing a sucking sound discovered some big tears in between the baffles on the last part of the air intake before it goes into the motor.

ANY ADDITIONAL INSIGHT would be greatly appreciated!