Hi all, it's been a while since I've posted. But I'm getting into modding my 2011 Prius IV, mostly it's been cosmetic upgrades so far (35% window tint, 5000k HID's with LED parking and reverse lights, replacing a clouded headlight assembly) but I'm wondering about performance upgrades. My friend put upgraded spark plugs and wires in his Hyundai and I'm wondering if that would give my car any upgraded performance. I don't really care about gas mileage because I'm blessed enough owning a Prius, and usually drive in Powe Mode anyway. I tried to search the forums, but any thoughts?