sr20 Ignition problem

[BarberJ86]

my car will run perfectly fine for about 10 min., then all the sudden it will start firing on 3 clyinders and the #1 coilpack acts as if its getting shorted out and it will melt/exlplode.

-wiring has been checked and rewired.
-i am getting a good 12v and ground.
-3 diffrent coilpacks have been tested in the #1 cly and they have melted

could a faulty ecu or ingnitor chip cause this?

[usdm180sx]

Check the blue connector that connects the ecu to the harness. Bad connections at this junction are a common occurrence.

[BarberJ86]

solid connect at the ecu. also the car has been running fine for a year, and this problem came out of the blue, if that is any help

[BarberJ86]

code 55 off the ecu = no malfunction. car will run fine for 10 minutes, driving or idleing then the #1 coil pack goes bad. anyone have any input, as to what could be causing this?