I as well as the cat mechanic have performed all of these procedures and more. As I stated before all plugs fire a few times then shut off for a few revolutions then fire again at a regular pattern. The throttle body seems to work well and the voltages and pressures all seem to be in order. He has swapped out from a running machine what seems like all pertinent parts, ie. ecu, the coil driver box, coils ect. He stated to me that the coil driver box will not send the signal to fire the coils if it does not see fuel but couldn't tell me what sensor it reads that information from.