Only this action can be applied to software based emission control.

He said it was expected that new emission controls would add at least $1,500 to the cost of each truck engine.

From 1987 on, incremental improvements in features and emissions control were made.

"No, the unit is under emission control, local transmissions only."

Opponents of emission controls argued that the cost would damage the industry and the economy.

Later cars were poorer performers because of their emission controls.

There is simply no reason to believe that tighter emission controls can't be readily reached in seven years.

Tightening emissions controls would cause the engine to drop in power still further, a little at a time, through 1976.

A brand new car with sophisticated emission controls, on the other hand, took something like 9 hours to generate the same levels.

This is becoming more common, especially where stations have to meet stringent emission controls.