in my back reading, pinaka maganda na yung SGI, sana pwede rin ito sa mga old school carb type na oto. marami paring carb type sa phils, im sure some would be willing to shell out extra cost to upgrade the carb type to become similar to EFI, para pwede SGI (kahit steel ang intake manifold), retro fitted with O2 sensors for more greener burn.

Sana nobody offered open loop in the first place, available naman clossed loop technology, retrofit all those without O2 sensors. oh well, you get what you pay for, cheap in exchange of automation comfort & efficiency.