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  1. MazdaSpeed3 DISI Turbo
    History: I have a cold air intake, blow off valve, and basic Cobb Partial Stage 1-af tune. Screwed my first engine and had it replaced with a DISI from a CX7 with 40k miles on it. I had all my original parts moved to it, including my bigger turbo. Replaced the spark plugs. Cleaned the EGR...
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