NOS

Derek1984 said:
Is the zex nitrous system a good system for a 4.6L and will it hurt a motor with 111000 miles on the engine?

I don't like Zex because their kits aren't rated at the wheels like the NX or NOS kits. Your motor will be ok with a 100 shot, but the car will need to be tuned on the dyno. Just be sure to get all the safety precautions like fuel pressure safety switch, WOT switch, window switch etc.

BTW- NOS is a brand, it does not literally mean nitrous oxide. NOS= nitrous oxide sytems