To make an extreme HPDI you're going to need fuel management for sure. I've always had to do things the hard way,I blame my parents,sorry to high jack your thread. I think once someone gets the ecu stuff figured out on the 3. But that involves cutting the back of the ecu apart and replacing a part. As far as the rev limiter is concerned he was doing some "clocking" a few years back to get them to rev to and I ran one with good results. Anyone had this done? Any thoughts on this? The 3.Įric Simon has spent a lot of time trying with not much success. I have yet to see a post where someone has had their Yamaha ECU reprogrammed. No noticeable difference, and no way to verify the additional hp.I have Yamaha 3. Sorry to cross reference another board but this is the best info I have found on Flashing 4. Those 34hp are made above the stock rev limiter. Most of their work has been done on bassboats.ĭiscussed heavily on bassboatcentral. I visited the Hydro Tec site and did not find any specific power improvement claims. A dyno is needed to verify any real changes.
#Hydro tec ecu flash mods#
Turbocharged engines appear to gain the most benefit if the mods change turbo characteristics to improve performance, but I know of no marine turbo applications.
#Hydro tec ecu flash upgrade#
Gains are often attained by changes to ignition usually requires upgrade to premium fuel to prevent detonation and fuel injection timing, fuel-to-air mixture changes etc.
#Hydro tec ecu flash software#
The software modifications should include more than throttle mapping. You can not compare the V6 with the V8 Two different animals But you are correct on the throttle opening, It looks like the mapping is all about the actual throttle opening, on the case of he they are claiming to hp that is 40 to 50 more hp!! That is a lot for just the throttle opening, would like to know if some one have done this.
Makes you think you got way more power but really just made the boat harder to control well. Doing that to lower hp models of a block you can verify are solely ecu limited makes more sense than boosting the top offering in a particular block.Īpparently many of those reprogram just change the throttle mapping so you get more actual throttle opening for the same physical advance of the controls. If it's less boost than that, I wouldn't think it's really worth the money.
Given the trouble Yamaha has with its f, if they could really get a reliable out of the 4. I'm interested on seen the results of this ECU upgrade. Use of this site indicates your consent to the Terms of Use. On top of that, they are quite a bit less expensive.All rights reserved. They can make 200+ HP fairly easily as well. Those engines are a lighter than the V6s, they are reliable platforms, and enough torque to get most sub 22’ boats moving really well. To me, the best engines to tune for light boats would be the mid range 4 cylinder outboards like the 3.0 Mercury four stroke, and the 2.8 Yamaha Vmax SHO (150-175). But, the results can be promising.Ĭompanies like Simon Performance Technology, Hydro Tec Marine, and a couple others are making products that address many performance needs from ECU programming, solid mounts and even beefed up propshafts in the case of Yamaha outboards. Head work can get expensive, same with exhaust and intake because nobody is making parts en masse. If you can get more air in, more air out, and have the ECU dial in the performance, you have the ability to really change an outboard. But, the advantage four strokes have is that they are fairly simple to tune. When direct injection technology took over the two stroke market, it created a challenge for modifying those engines, compared to the old EFI engines. But where do the new four strokes leave those looking to tweak their setup? In a good place in my opinion. Don’t get me wrong, it’s not the glory days, but there are some powerful, incredibly reliable engines on the market. It took about 10 years for the weight and cost to come down, and now we have some decent options with attractive warranties.
At first, four strokes seemed like the enemy of high performance boaters they were heavy, lacked the low end torque, and were geared to push houseboats, not light performance hulls. While outboard engines have changed a great deal in the last 10 years, the biggest changes have come in the last three years, including the monumental shift at Mercury Outboards in the spring of 2018.