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  1. Z

    06 272 Cobalt with 525 Merc Racing

    Newie here. Names Brian and I live in Renton, Wa. I just bought this 272 and I was wondering if anyone has experience tuning this combination in? I was hoping for 70mph. The dealer says the prop is a 27 pitch duo thats a 3 blade/ 4 blade combo. At WOT its tagging the rev limiter 5500ish. Any...
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