Hi guys, I am running the aem with LS1 coils and the EPM. After doing the conversion the car runs great and has been to the track many times with good results. However every once in a while when I turn the ignition on before starting the car I get a backfire, one time bad enough to bend my throttle body butterfly. After looking into this I found coils 2 and 8 ignite every time I turn the ignition on. The coils are wired from following the epm intall thread on here and like I said the car runs fine, just this one issue. The fact that only cylinders 2 and 8 fire even after turning the engine to different positions tells me the ECU is somehow sending a singal briefly activating only these coils. Could there be a setting in my tune that could cause this. Any ideas ?