[LeonOfTheDead]

Originally Posted by fpv_gtho

Holden cuts power to save fuel - drive.com.au



I can seriously see this backfiring and causing the real world economy of the Commodore to increase. Less power at a higher peak will just cause the engine to work harder.

the point of having the engine working at a slightly higher rev is good, because at higher rev the engine is more generally efficient. that means that it would pollute less and require less chemical power (so fuel) to obtain the same mechanical power (so hp). it's the same principle behind cylinder deactivation systems in some V8/V12 engines( (MB, Ferrari) or of using small turbocharged engines. surely, in those moments, the engine would consume a higher quantity of fuel than, but it will spend it better obtain more power with less emissions.
besides, this considerations are good just when speaking about the homologation process, when the car, and the engine, are tested to evaluate the emission and consumption levels. unfortunately, the way those levels are evaluated are completely unrealistic. so we could finally obtain a car that pollute less than its predecessor, but just from a theoretical point of view.