Petrol

[Willo]

yes..

Does your car consume more fuel when it runs rich??

I just don't quite understand this concept, often when we modify our intake for example, the air fuel ratio will be rich but we read a lower fuel consumption...any reasons?

What's more easier - sucking in air through a lollipop stick, or sucking throgh a straw?

The engine's not working as hard to make the power for u to accelerate at a given rate, so it'll use less fuel. if that makes any sense LOL

I think this needs a bit more explanation.

When a car runs "Rich" it means that the air fuel mixture is a bit heavier on the fuel side, "usually" because there is a technical fault with the engine eg:- blocked jet/injector, air filter is clogged, air sensor is reading wrong etc......

When you modify the air intake to allow faster airflow, forced air induction etc.. this doesn't make the car run rich as such, but it does pump more fuel in but the actual mixture will be as it is intended. As mentioned above, the easier it is for the car to breathe (get fuel and air into the cylinder) the easier it is to rev eg:- more power less effort. If you are serious about this, then modifying the intake without looking at how the gasses are going to escape eg:- exhaust, then probably not worth the effort unless you plan to do the exhaust when you have the cash.