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Old 05-05-2016, 06:19 PM   #6 (permalink)
Ecky
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ND Miata - '15 Mazda MX-5 Special Package
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Yeah, I agree with cowmeat, it's probably either a spark plug that has backed out, a broken ground strap, or the EGR valve or passages. Ground strap could cause IMA oddities too.
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