Ok this is defintly not a new problem, but one thats been w/ my z for years now. She just dies sparatically, i will be driving down the highway and she'll just cut off, i turn the key and she starts back up. And runs fine until she dies again, i've been told a few dif things, bad efi relay (changed that and still no good) and bad ignition module (how do u change that) and could that be the problem? Cause i mean she doesn't sputter or anything when she dies, just DIES.haha