I am new to the Honda scene. I just got a 1989 civic ef sedan. It has stock d15 sohc non vtech motor. Head is brand new bottom end has 70k. All it has done is adjustable coilovers and a magnaflow cat back exhaust. I am just wondering what the best way to get more power out of it without a motor swap because it is going to be a daily driver. any help is appreciated thank you.