Pulled the plugs one more time and all looked good.
Not sure what that was about, but thankfully, after another 3 mins of running it was purring like it always did. Pulled the plugs and they were all firing and all looked good? It did have the odd stutter to it before also, when it was cold or coming down quickly from high revs, but this was happening more often and at all RPM's. Turned the key and.it started!! That was a relief.īut there was a definite miss now. Installation of the ECU was just as easy as removal, had it in and the muffs on in 15 mins. The motor didn't need new plugs, but I changed them anyway just so I could track the burning condition after the upgrade. I don't know why I was disappointed when it looked exactly the same as when I shipped it. I was like a kid at Christmas waiting to open the box. I picked up 5 mph on my 150 Merc by lifting it 2''. Most outboards are mounted flat on the transom, when they should be 2" up.įree's up the fin as the boat planes off and no extra drag at higher speeds.Īs you slow down it comes into effect again. If you can, lift the motor up on the mounting holes. Just a guess, but I'm going to bet I put it back on. Now I wish I would have timed my planing time, as once I get the motor lifted and test performance there, I'm going to rip the Hydrofoil off and run it again. I'll find out by just how much after I test the ECU this weekend.
#Simon motorsports ecu flash plus
Dragging that thing around plus the extra leg in the water I'm sure is killing me. It was passing over alright, by at least 2". That's what was looking for when I went to the back snooping, I wanted to see if water was passing over or under it. I have to agree with you, HUGE improvement on the planing time. I installed a Stingray Hydrofoil after the second outing, which was 11 years ago. With the added HP going up to 115 hp I don't think you will see great improvement on the hole shot and getting it up on plane that much quicker but add a Hydrofoil and you will be in business! Good luck! If the motor is too low that is major performance stealer as well.
I put a Hydrofoil on my 150 Merc and not only does it get up on plane in half the time, I am convinced it has also helped my fuel economy by about 15%/20%. I'll correct that after this weekend, as I want to keep it apples to apples.Ī 4 blade stainless prop would help quite a bit as would a good Hydrofoil mounted on the cavitation plate. I was finally a passenger in my own boat and while snooping back there I realized that my engine is sitting about 2" too low in the water while trimmed right out. The prop is a 13x19 3 blade aluminium and wot is 5300 RPMs.
#Simon motorsports ecu flash full
In 2 days my ecu is supposed to arrive and next weekend (weather permitting) I'm headed out to give it a test run.Ĭurrently my boat will hit 37.2 mph with a full tank of fuel, my wife, and 2 boys in the boat. You've got to rip most of the casing off the unit to move the tank, but when you do, presto, out goes the restrictor. *It's nestled in behind the oil tank on this engine. 2 days later it arrived to Simon and the next day they called to say it was ready, collect $650 USD, and ask how I wanted it shipped. I removed my ecu, which took me about twenty minutes, and mailed it down there. We talked about some of the concerns I had read about and some that I had, all were put to rest. I called down there and spoke with Eric, a very knowledgeable man. Huge thanks to 67ZL1 !!! The timing was really perfect to stumble onto that thread. I just didn't realize how many.Īfter countless hours of research I learned that basically the only difference was the air intake size (a restrictor), a slight gear ratio change, and different programming of the ecu. For example, the 75, 90, and 115 share the same displacement and several of the same parts. I have always known Mercury built their engines in*"Family" groups. Both big and small, good and bad, which makes my original decision sting that much more. In that time I've gained considerable experience on the water. To trade in my engine for a 115 made zero financial sense, so I've lived with it for 11 years. I love that engine, it's been bullet-proof, I just wish everything was a bit faster planing time, top end, the usual. Something I have regretted since I figured out what "planing" meant. Long story short, due to finances at the time and little experience, I opted to put a 90 horse Optimax on the back even though the max rating was for a 115. I wish somebody would have told me the value in maxing out a boat's rated horsepower. I apologise now for the long-winded review.ġ1 years ago I bought a Legend 17Xtreme and at the time didn't have a ton of experience with boats, having only owned a 12ft tinner and been in a few others.
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