Hi guys, Im new here and found this forum today. I have a question...
I recently bought a new hull and have put my 2010 EFI F50hp on it. The new hull is rated to 60hp and I really want the extra 10hp. I have been researching this a lot lately but its hard to get definate answers on a couple of things.
Now I understand you can do a simple mod by removing the air intake restrictor plate on the 50 to make it the same as the 60hp. I also understand that the ECU's in the two engines are similar but different (I dont know what is different). The part numbers are NEARLY the same 6C5-8591A-32-00 ($848.80) and 6C1-8591A-32-00 ($711.80). I understand the ECU in the 50hp has a rev limiter set to approx 6000RPM and the ECU in the 60hp has a rev limiter set to 6200RPM. This alone would suggest a difference in part numbers but is there more to them with the price being different as well??
I decided to remove the intake restrictor plate and here are the results...
I started with my 11' prop which used to spin at 5300rpm (48kmh) with the restrictor plate in. It now spins at 5800rpm (53kmh) without the restrictor. I then upsized to a 11 5/8" X 12" SOLAS which used to get 5000rpm (50kmh) WOT (slow off the mark). It now gets 5400rpm (53hmh) without the restrictor but noticably quicker up and out of the hole. The motor is running beautifully as ever after 3 hrs without the restrictor plate.
BUT...I am worried that I may eventually be doing some damage if the ECU hasnt adjusted and it thinks its still running a 50hp and may be running leaner? So my main question is...will I damage my engine or will the ECU compensate automatically (if it needs to?)? I cant afford to damage my engine but I will modify the ECU if I need to.
Any help on this would be fantastic. I got a lot of my info online at http://www.refugeforums.com/refuge/s...d.php?t=771608