I have a link plus standalone ems, I use it in 4-multicoil spark with 2-dual channel link ignitors. I'm using the factory subaru 2bolt- coilpacks(COP)that came with the phase 1 ej20g, I've been burning coilpacks randomly, sometimes its 6 months before I lose a cylinder other times its weeks. Did some calling around and apparently the ecu's dwell time is too long for the factory coilpacks and they overheat and fail. I found the AEM "dumb" coilpacks for about 240$ for 4, they look like they could handle a lot more heat and throw a much brighter spark. I don't want to switch to a wasted spark ignition as i have tried without any success. Anyone have any experience with the aem coil packs?