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Old 09-22-2017, 08:12 AM   #33 (permalink)
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Originally Posted by Stubby79 View Post
There's also the air-flow meter adjustment that will lean it out.

Oh and between my cleaning the ground connections and installing a heated O2 sensor, my tail pipe isn't quarter as sooty as it used to get.
I never knew about the air-flow meter adjustment. Could be different between the 1.8 and 1.6 models.

A new O2 sensor would definitely help.
There are reports of people who turbo Miatas and get better mileage if they keep out of boost, as the stock tune could be leaned out.
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