Does having the STI scoop on the front of my car use more fuel?

Reason for asking is this, i recently put the original scoop back onto car, put £20 petrol in and done 110 miles before the fuel light came on.

Before when i had the STI scoop, by putting same amount of fuel in car, i only got approx 80 miles?

It might even be due to the fact that spring is on its way!

 

There are loads of different variables that can be a factor.

The STI scoop is a lot bigger and may cause more drag.

Ambient temperature - the colder the weather, the more dense the air is so more fuel is injected into the engine. (Hence cars running much sweeter in misty/cold conditions

 

I agree with Cornelius... drag making the engine work harder for any given speed = more petrol.......... more cold air via the scoop means you can run more boost = more petrol.

 

having the sti scoop adds on 50bhp so you need to use more fuel to cover the power increase.

 

So thats why i have got 700bhp then

I was under the impression that all i was doing was getting more cold air into the intercooler, not using more fuel?

 

No, you need a turbonator to get to those figures

The 2 are connected. More cold air means you can run more boost which uses more petrol.

 

yup 100% agree.


spot on.

 

so by putting the smaller scoop back on, i will not use so much of the expensive stuff?

 

Without the corresponding undertray I doubt it was running particularly efficiently Perry.

 

Had the original undertray on car, maybe thats why i thought it was running a bit rich.