I was using Nissan CA18 ignitors until i found that they dont like having a nice clean signal from an ECU.
The X4 seems to work quite well, i picked up a few hp in the midrange for some reason too. The Bosch BIM027s in parallel running wasted spark seem to be what everyone uses for race cars these days, and apparently are pretty much indestructable.
The BIM008s (Camira) ignitors tend to be a bit iffy under heavy load and heat apparently.
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