Quote:
Originally Posted by jeebus
yeah, and I'm curious about this as a possibility. Are aftermarket intake manifolds going to be attainable? Is anyone currently engineering one?
really? Was this calculated at the pump or by the car? That doesn't really make much sense considering the energy density difference....unless Visconti is really able to run it that much leaner.
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Haven't heard of an intake manifold yet.
The energy difference is made up for by the fact that running ethanol can significantly increase the efficiency of the engine, especially with high compression ratios where the charge temperature gets quite high, and double especially with direct injection which utilizes the heat of vaporization much better than port injection. I don't think the Visconti tune is going ultra lean (much beyond stoichiometric, which can increase mpg quite a bit depending on conditions). Long story short, direct injection + alcohol = win. Rather than losing 29% of your mpg, you lose perhaps like 20%. 29-30 almost sounds like a stretch, but if you think about how cruising along at 65-70mph gets you 35-40mpg, it's about right.