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    Ongoing misfire/stuttering problem after many parts replaced, need help!

    Hi all. I'm new here. I inherited my husband's 2010 Mazdaspeed3 last year to be my winter driver. It has about 98,xxx miles and he babied it the whole time he drove it. Was his dd for years. He said it's always had a very mild stutter in the acceleration at certain RPMs, and he mentioned it to...
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