boss ngarcia, yung travel ko from bacolod city to cadiz city mostly highway yun pero i was tailing lots of trailer trucks loaded with sugar cane (milling season kasi) so have to do lots of overtaking usually reaching 90kmh then back again to crusing speed of 70kmh, i've been using my Vortec Eco-filter for about 3 months, what i've noticed is that i could shift into 5th gear even if the speed is only around 45kph without the engine stuttering which in my opinion contributes to improved fuel consumption, also noticed good pickup or overtaking speed even at 4th gear. another reason for my good FC is because am very conscious on how i accelerate and when to apply the brakes so as much as possible i don't put the car into a full stop so that i dont need to shift to 1st or 2nd gear to put the car in motion again. overall am very happy with my Vortec Eco-filter. btw sparkplug gamit ko is iridium, oil used is full synthetic, my tires are Michelin XM1 Low Roll Resistance, replaced original rim to 6 spoke avanti/momza which is much lighter than the original rim.