I had the SAME thing happen to me last nite. My friend has an 03 Cobra and had a 2.8 pully, diablo chip, and k/n fpik system installed. I had to order him some NGK TR6s from thunder racing because he didnt have a credit card.....

The plugs came in and I said stop by, and I'll help you put them in. As in, I'll hang out while I offer you my garage and tools to use while YOU put your plugs in. He gets there and starts looking under the car...I popped the hood and started to kinda get things together. I was like man wtf are you looking under there for? He said coil packs? I had the 2 coil pack covers off on each side, I was like bro I hope your joking? He wasnt.....I nearly collapsed from laughing so hard. I said fine, don't touch this car. I changed the plugs and that was that...Its AMAZING how un informed people are with their vehicles...its scary!

 

Sounds like my wife, ("whats the difference between the oil dip stick and the trans dip stick") I told her I would do all her checks and maintainece after that comment. You would expect this from a woman (no offense to women)some peeps barley know where to put the gasoline. My buddies wife somehow got a couple of gallons of diesel in her car one day after spilling it all over the ground someone told her she was putting in the wrong fuel type!!!! The car smoked like hell and the tank had to be dropped and drained.
Some people.......glad they are `around for entertainment sake.