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Ah, I was not privy to your 10% numbers. I was estimating relatively small gains in FE from the alt delete. Ok so its valid. If it was posted earlier in the forum I apologize I might have missed it in the 8 pages ^_^.
Right power-to-weight does not effect overall efficiency. . .but we won't see max efficiency. And we won't accelerate slowly enough for it to not matter. So the gains in Power-to-weight will influence FE not eta but FE(Fuel economy not Efficiency). Apparently in this case its definitely worth it.
I knew the 2% per 100 lbs general rule of thumb but I was expecting this delete to be at best 5%.
In lieu of that data one BP 375 and one battery ought to suffice the alternator during day driving, and maybe night driving if you switched the alt on when you stopped and made sure the throttle position did not move. Would definitely go to at least 2 serious amp hour batteries before totally removing the alternator(in case one battery fries out for odd situations).
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