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Old 06-18-2020, 08:12 AM   #546 (permalink)
Ecky
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Join Date: Dec 2011
Location: New Zealand
Posts: 5,014

ND Miata - '15 Mazda MX-5 Special Package
90 day: 40.51 mpg (US)
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Filled up with ethanol-free premium this most recent tank, and I had to adjust my fuel trims by 5%. My math tells me AFR for E10 should only be ~3.3% different. Now that it's warming up, I'm seeing some huge fuel economy improvements.
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