It's to increase airflow... brand is superione and model for
petrol car is 'turbo555' ... it claims that by increasing the
volume of air, combustion will be more efficient thus resulting in
better FC, power, etc....
I don't believe such claims though.
air and fuel mix ratio is controlled by the ECU, more air = more
fuel to burn power increase might be at a minimal at the expense of
lousier FC
