Got an '01 ws6 that in high rpm shifts from 1-2 and 2-3 throws a random cylinder miss fire code. Checked the fuel pressure going down the road but it stays around 60 -/+ 4#'s. Gauge bounces around erratically though. Does not hold pressure when key is turned off.
Just changed spark plugs, didn't change anything. Wires are good. Not sure if its coils or?????? Any ideas