Been using open pod for almost a month now. From performance wise, car does have better response when it's on the move, in morning or at night when air is cool. On hot afternoons, it felt weaker than original airbox especially traffic jam situation and stop-go speed hump crossing. This is anticipated considering the openess to engine heat but not overly weak. I can still live with it considering the trade for the intake sound where my wife labeled it as annoying or something wrong with the car. Hahaha...
For FC, it has seens slight improvement of around 0.3-0.5 km more per liter of fuel.