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With out some pretty fancy controls the leanest you can go while driving down the road is going to be about 18:1.
Any leaner than that and you will have to have spark time tied into a wide band air fuel ratio monitor.
It's doable but I think most of the gains are already had if you can drive along at between 16 to 17:1 air fuel ratio.
If I'm going to do an electric car, might as well be a leaf.
A truly fast electric conversation runs into at least the tens of thousands of dollars. Then you still can't take it on a road trip.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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