ORIGINAL: wzak29
I bought a used Evolution .46NT never used in box someone tolled me I do not need to break it in is this true and are Evolution’s good engines going into my PT-40 MKII first kit.
I think the evolution is a chinese knock off of the .46FX, much like the magnum .46XLS, except with a different look.
I would run the engine just slightly richer than normal and fly it. The engine will tell you if it needs a break in if it begins to sag in flight.