I was swapping manifolds on my truck, done it plenty of times so I was just racing threw it. Got it done, quick check, fire it up, let it run for a bit, change the oil all seems well. Get out on my "test" road and have to see how the new manifold works so I nail it, get it up to 90 and all hell breaks loose. She bucked, sputtered, backfired than finally died. Tow it home and start to check, turns out I set the manifold down on the crank position wire. Just pinched it, but enough to melt the wire and let it arc all over the place. I quickly swapped back to stock and had it towed in for warranty. They replaced the CPS, PCM, distributor and the body control modual. Thank god for warranty and the "I dunno what happened, it just died" line. I double check things now.