Tuned intake for fuel economy

[Daox]

My main prompting for this is this autospeed article. It is an article where they dyno test a car with different length intake pipes on it. The different lengths effect the torque curve. I know we aren't tuning for power, but it must have some effect on fuel economy.

[oil pan 4]

So they confirmed the ram air effect on an engine?

[Baltothewolf]

Originally Posted by Daox

My main prompting for this is this autospeed article. It is an article where they dyno test a car with different length intake pipes on it. The different lengths effect the torque curve. I know we aren't tuning for power, but it must have some effect on fuel economy.

More TQ = More MPG. No, I don't have any 'scientific' data on this, but common sense of a powerful thing.

[oil pan 4]

In a gasoline engine more torque also means you burned more fuel.
Unfortunately most of the stuff that gives a gasoline engine more power also makes it burn more fuel.

Diesel engines on the other hand, things that increase hp and torque don't always lower mpg.

[ThermionicScott]

Originally Posted by Daox

My main prompting for this is this autospeed article. It is an article where they dyno test a car with different length intake pipes on it. The different lengths effect the torque curve. I know we aren't tuning for power, but it must have some effect on fuel economy.

My takeaway from that article was that running a stubby "CAI" off the intake manifold was a dumb idea, and anything longer was an improvement. I quickly agreed with the first line of their conclusion:

It would have been good to have dyno'd the Charade in dead standard trim with its factory aircleaner and intake duct in place.