PLUS my new Bimini was up the whole time and it wasn't before. My fuel efficiency went from 1.8 to 2.55 with the same prop, same RPM and this was straight into what I estimate was a 2 mph current. I filled the tank when I got there and did the math over lunch.
I took my boat out Sunday afternoon to Pickwick Lake on the TN River System and put in mid lake and ran south (up river) for 35 miles without stopping. my cruise mpg was a terrible 1.8 at approx 20mph around 4000 rpm. The 200 just didn't have enough umph to get the front of the toons completely out of the water so there was drag. With clean toons, top down medium load and good prop, I was only getting 32-33 MPH. I have a 200 SHO on a HEAVY R25 with ESP. You have as much chance of blowing the power head on your 200 SHO with the remapped ECU as the guy who BOUGHT the F300.Īnyway, I am here to testify in no uncertain terms that it works and the results are just unbelievable. you boat is only rated for a 200 but Yamaha doesn't want to make separate internal combustion engine parts for 5 different HP models so they throttle the 4.2L engine with the ECU and decal for the various models. The ECU is restricted on the lower HP to fit various applications. They are identical 4.2 L 6 cylinders engines. What I found out is the Yamaha 200SHO, 225SHO, 250 SHO (Japan has a 275 SHO) and the F300 are all the same powerhead. The 2 primary concerns people have are 1) does it work? and 2) if it DOES, will the increase HP damage my engine? I got mine back a couple of weeks ago and installed it in less than 5 mins. I know this has been talked about on many sites and I have done hours of research online and on the phone. Whatever your performance needs are, bass boat, pleasure boat, offshore, or racing, if it's a Yamaha then you need Hydro Tec.I have to share my experience with the Nizpro Marine ECU Flashing or remapping. These assemblies are available through the Yamaha dealerships nationwide with the industry's best warranty and service.
Our re-manufactured powerheads come to you recommended by the Yamaha network. All of our technicians are factory trained and well equipped to help you with your needs and buying decisions. Hydro Tec has been involved with Yamaha since the beginning of their entry into the USA. This also allows us to quickly respond to technical needs in the market and offer you the technical support that you require. Our close relationship with Yamaha gives us current technology.
Hydro Tec offers many after-market performance products as well as OEM products. Hydro Tec has positioned itself in the marine industry as the Yamaha source for all you outboard needs. Hydro Tec has become the Yamaha performance choice for thousands of customers like yourself. Thank you for your interest in our products and services.
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