Had a strange problem with two Kingtech K80s that are installed in falcon 120s.   Last year, at around the same time we had two K80's that would not run cleanly through out the throttle range and would flame out for no apparent reason.   It was around 32 deg. C for temperature and a 100% humidity as we had rain showers and thunder storms all day.....  we sent the engines back to the factory but the factory said there was no problems and the engines were good...  they have been running well and on my unit,  i have over 12 hours of uninterrupted flight time.  <div>
</div><div>Similarly...  around 2 days ago, similar conditions (32 deg. C and 100% humidity, showers with some thunderstorms)  for the K80's existed and again, the two engines wouldnt run clean through the throttle range....  after you had achieved start up and the engine was running, sudden acceleration to 50% power would result in a flame out....  over and over again...  fuel system, fuel was clean.  no contamination....  all valves worked, fuel purge was no problem, filters, UAT were all clean......  </div><div>
</div><div>we then did a longer ground runup and slowly opened the throttles allowing the engines to adjust slowly to each throttle setting...  there was a bit of choking at 50% throttle, but if you allowed the engines to adjust slowly at each throttle position, until WOT, the engines eventually were able to adjust and did not flame out anymore...  seemed the engines had to warm up at first????  </div><div>
</div><div>I'm not really sure "warm-ups" are necessary but it has got me thinking that the ECU may have an issue with High Humidity environments?  thats the only thing i can think of as both K80's had the same problem.....  Would sealing the ECU be a good solution?  Anyone had similar occurrences?  </div><div>
</div><div>Thanks in advance!  </div>