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Get your self a wide band O2 gauge and carb tuning set.
Up to $250 for the gauge and $40 to $100 for a rod and jet set would be much cheaper than going EFI and would deliver much of the same MPGs.
Plus with older/cheaper EFI you cant lean burn, older EFI tries to stay as close to possible to 14.7:1. With a carb tuning kit and O2 gauge, depending on conditions you can get it to do what ever you want.
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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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