When you increase the supercharger speed and/or add an aftermarket intake that allows more air in what really happens?

Doesn't the engine computer ration the amount of air and fuel into the cylinder with its own algorithm?

If more air is allowed to go into the engine, doesn't that elevate internal temperatures and ruin the engine after a while?

 

In general, the more air you can get into the cylinders, the more gasoline the computer will allow to be injected.

Increasing horsepower increases the amount of stress on engine components and an engine modified to produce more power will wear out sooner.

However, subtle mods such as an aftermarket intake are highly unlikely to cause any serious decline in engine longevity, assuming that the filter on the intake is as good at removing foreign particles as the stock filter does.

My general belief is that performance mods that do not alter moving parts of the drivetrain have very little effect on engine longevity (intake, plug wires, exhaust, etc).