metal in engine!

[Budfreak]

well, it's my own fault i guess but i made my own tornadoes for my intake and mounted them right before the throttle bodies in the airbox with one for each throttle body. they worked pretty good for the low end but when itook the box off, one of the blades was MISSING! it went into the passenger side of the engine and it happened after a fast run with a stratus r/t a few weeks ago. after the run i started missing a cylinder for about one minute then it just started running fine again. theres been no problems since then so it must have spit it back out. i thought it was one of my coils till i took the box off yesterday and saw the missing blade. do you think it hurt anything? it seems to be fine but i'm worried.