1. The Vios is a preppy little car which returns good fuel economy numbers while squirting along the city. But of course more power is what we want.

2. It may look simple but it took a week of R&D to come up with this cold air intake for the Vios. We choose a low profile K&N filter to quell fears of wading through the floods and the offset inlet is the only way to mount it inside the fender.

3. We first remove the rubber elbow pipe from the thorttle body to the stock airbox.

4. All in all, you only need to remove two pieces, the throttle body tube and the snorkel that goes underneath the stock airbox. Incidently the inlet measures a puny 1"

5. We remove the airbox to make more room to work with. We're going to put it back later.

6. The intake is the connected to the throttle body in two parts as one long tube will be hard pressed to fit in.

7. Our cold air intake has the provision for the all important airflow meter. Without it, your car won't run.

8. The owner took this time to ditch the recirculating hose into the intake and installed a K&N cam breather.

9. The fender has to be removed to be able to reach inside and attach the filter head to the intake tube.

10. We then tighten all the clamps on the hoses tight and snug.

11. Here's another view. The filter element is well isolated from the engine heat.

12. The moment of truth. We did an initial baseline dyno with the stock intake in place. Peak power came in at 96.9 @ 5,500 RPM. With the intake attached, peak power rose to 100.5 at the same RPM. But the biggest gain is a staggering 10hp at a very usuable 4,000 RPM, giving this Vios a real punch in the midrange.