[Realism]

They are not fuel saving devices, but ways to boost power.

Ok how about fuel injection, which also requires electricity to boost power? Not a fuel saving device? When you increase the efficiency with in the combustion chamber arn't you in fact using less fuel to create more power?

[thackney]

Ok how about fuel injection, which also requires electricity to boost power?

Opening a electronically controlled valve to let the fluid flow is hardly comparable to converting energy from chemical to mechanical to electrical back to chemical.