ignition drivers

[reevio]

why would they keep blowing on my coil cheers

[GintsK]

if you blow your coil current is too high.
It can be too high because of:
-dwell time configured too high
-wrong polarity of signal to IGBT
-IGBTs already fried and keep coils energized all the time
-shortcut to ground between IGBT and coil
-...

Could you be more detailed about your setup?
Have you a fuse installed?

Gints

[reevio]

right i run a single coil pack its currently running on 2 cyclinders due to one ignition driver blowing and only leaving half the coil working
it did this exact same thing on another coil pack and got fix by gunni im not sure if there are any fuses fitted . will they be inside the vems unit ? also what is igbt?