[mazdamx640]

I really appreciate the advice I have not been able to find any articles about making your own lithium battery so any advice I can get on that is great. I was planning on locating the battery in the dash or trunk because of the heat I was not aware of the sensitivity to low temperatures only heat I might just stick to running a 10 lb motorcycle battery during the warmer months and a dc to dc for the coils. The higher voltage would be nice for the starter allowing a smaller battery though. As for the dc to dc converter I'm wondering how reliable it would be and how much voltage I would safely be able to run to the coils or how much the spark plugs could be gapped for the increased voltage?
I'm not completely off the idea of running a 16 volt system though just more reading to do. I would mainly worry about restricting the power to the pcm