I have read that the TEV doesn't technically add fuel, but instead decrease air flow into the pilot circuit to enrichen the mixture. This was on an Intruder forum. I'm not sure if the Savage TEV works this way. Any one have a clue.
I did find this.
TRANSIENT ENRICHMENT SYSTEM
This transient enrichment system is a device which keeps fuel/air mixture ratio constant in order not to generate unstable combustion when the throttle grip is returned suddenly during high speed driving. For normal operation, joining of the air from upper part of carburetor inlet side to pilot air passage obtains proper fuel/air mixture ratio. But if the throttle valve is suddenly closed, a large negative pressure generated on cylinder side is applied to a diaphragm. The valve @ which interlocks with the diaphragm closes an
air passage, thus, the pressure flows out to the pilot air passage.
This is system to keep the combustion condition constant by varying the fuel/air mixture ratio by controlling air flow in the pilot circuit.
I'm trying to find out what part the pilot air jet playes in this.