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Aug. 15 2013. I purchased an ECU for a yamaha 115 4s, 2006. Please, use caution if anyone decides to purchase items from Marine Resources, 920 S River Rd, Englewood, FL 34223-3910. (941) 999-4084. To date, I have not received the ECU. I was given several reasons for why the ECU isn't here, but after several contact attempts, they have failed to give me a tracking number or returned my phone calls, after indicating they would get back to me in twenty minutes.