Like I've mentioned before, IF I was interested in making the fastest Yamaha jet boat on the water, I'd go one of two directions anyway. H#ll, I can modify the ignition and fueling on my new Yamaha dirt bike ON MY PHONE!!! But just like Jgorm said, our experience tells us that the returns on investment of time and money would simply not be there. It has been REALLY HARD to restrain myself from diving into these Yamaha engines. Just put cheap gas in them and go.(I know you already have modified tunes in your engines Wojtek, this is mostly for anyone else reading and considering diving into it.)īelieve me, I've "tuned" everything I've gotten my hands on since my '67 Mercury Cougar that I built the engine for before I even had my drivers license. (Happy to see another car guy on here btw!) Take it from a couple guys that have seen the "other side" of the tuning world (the "real" side actually), it's simply not worth going crazy on tuning or even monitoring these engines. Yay! Wojtek now you have TWO smart guys that are going to burst your bubble on tuning or monitoring these boats! Lol. Lectrotab Trim Tabs w/SemiAuto MLC-1 Controller RideSteady/Hydrophase GPS Cruise Control Lucky 13 (L13) Cones Cobra Magnum AK w/MEGA Fangs, Secondary Steering Rod, EZ Locks Seadek /Full Set w/Extra Pcs WakeMakers Custom 2,400lbs Fully Integrated Ballast System w/4 Rev Johnson Pumps Wake/Surfboard XTP Racks w/Swivels Premium Sound System: Wet Sounds ICON8 Tower Speakers, Wet Sounds HT-2 Marine Amp, Wet Sounds WS420SQ Equalizer w/TalkBack Mic, 10 Polk DB651s Coax Speakers Cabin/Swim Deck, BassLink Powered Subwoofer, 2 Clarion XC1410 Marine Amps Sound Deadening System (RAAMat) Raymarine Dragonfly 5M GPS Chartplotter 150A Helm Aux 12V Circuit w/Distribution Blocks CIPA Mirror 180 Bow LED Docking Lights VHF DSC Radio/Fix Mount Antenna Secondary Bilge Pump System ProMariner Smart 2-Bank Charger w/NOCO Outlet Bumper/Fender Locks Premium Yamaha Cover Bow Stop/Stoltz Radial Tires, Trailer Mods We see these failures on a daily basis."I have no special talents. The third pic is the internals of this same MEFI 3 ECM with some marked components and the red dots that are common failure points. The wave form patterns now show steady normal patterns. The second picture is that same ECM fixed by Boats Unlimited. The first picture is the wave form patterns of a bad ECM. Please see the boat ecm repair gallery below. Just like anything else electronic, ECMs will fail in due time. Why would anyone want to risk having a faulty ECM jeopardize their investment, especially when the electronic ECM is old? ECMs are a very specific electrical processing device receiving inputs and controlling outputs. You must have a good working platform at the onset of your project BEFORE you think about using your 10 to 30 year old ECM unit, especially on newly built engines or upgrades. If you are doing an engine rebuild, engine upgrades, or maybe just trying to find your engine running issues, ECM testing is one way to help diagnose your issues.Īlso, if you are doing recalibration to your ECM, it is very wise to have your ECM tested before recalibration. Here is an example of wave foam testing by us on a MEFI 3 ECM to show that we will work on a variety of different ECM units, including Mercury MerCruiser and Volvo Penta. Do you have a marine, commercial, or industrial ECM (electronic control module) that you know is broken? We might be able to salvage it!ĭo you have a marine, commercial, or industrial ECM that you fear might be broken, but not sure? We can test and verify that it is either working or in need of repair.
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