This is a common failure point blamed on the IAC but the root problem isn't the IACs, it's the fact that Mercury is exceeding the duty cycle on many of the engines that causes them to overheat and short out. With an unwavering commitment to excellence, we have set the industry standard for precision, quality. At Simon Performance Technology, we proudly stand as the world leaders in the testing and repair of Mercury Marine, Mercury outboard, and Mercruiser Engine Control Units (ECUs). The harness contains a replaceable fuse that will blow and prevent the shorted IAC from damaging the PCM (ECU-Computer). We are the world leader in Mercury Marine ECU repair and testing. The advantage of the harness is to prevent a failed IAC from damaging the PCM, which is $2,000+ to replace. I am looking to use my engine data app in my Raymarine Axiom MFD. Fuel Maps, Ignition Maps, Secondary Throttle Plate Maps, RPM Limiters and many more advanced settings can be modified allowing you to tune your bike to the limit. Hi, I finally upgraded my 1982 Johnson 90 hp outboard to a new Yamaha 70 hp outboard. Replacement IACs and fuses are also available. Woolich Racing Yamaha ECU Flashing products allow you to tune the maps and settings in the Yamaha ECU. Also included are two USA made IAC units with gaskets, hardware, (just in case you drop one in the bilge) spare fuses and a canvas storage pouch. Product Details Unleash your fuel injected Yamaha F70 EFI‘s Performance and wave adios to the lagging - fuel map programming with Dyno-Boost Performance Piggyback. The kit was developed for twin engine applications and includes two plug-and-play IAC harnesses that are fused to prevent a direct short to the PCM. Recently bought a boat with a Yama F80 2010. chatting with a merc tech buddy he told me the only difference from the 200 verado to the 300 verado was the 6000 dollar ECM.

Depending on your gauge and control preference, the F50 allows you to access our Variable Trolling RPM Switch (VTS ). Inspired by the F70’s ingenious design, it combines light weight, exhilarating performance and valuable efficiency. from a manufacturing standpoint its the simplest cheapest way to fly. For inshore fishing performance in a few less horses, turn to Yamaha’s 1-liter 50-hp midrange. but with most EFI Yamaha 4 strokes the difference will be in the ECU mapping. Might be cheaper to sell the 75 and just buy a 90 however. some of the 2 stroke Yamaha 9.9 to 15 simply required a reed box change.

So, if someone is willing to change the carburetors and the CDI then it is possible to get 90 HP out of a 75 HP motor. Our kit eliminates costly PCM damage that can occur when an IAC fails, which can be a common occurance. After comparing a carbureted F75 with an F90, here are the differences that I noted. The Marine Design Corporation IAC Survival Kit is designed specifically for Mercury Racing 600SCi, 662SCi and 700SCi engines.

Yamaha f70 flash ecu