Thanks Floris
Excellent, very good point! I think this is similar to how the ford EDIS system works that a lot of people use too
The reason i didn't mention it is because it's a bit of a gamble, because you don't know whether the signal coming from megasquirt is powerfull enough to trigger the xe/lets ignition amp. I know the transistor is rated about 200ma max, so we need someone to try it on the vauxhall set-up (not responsible for fried transistors
)
It would probably work, as it's a small transistor triggering a bigger transistor