Roei,


Nobody here said anything about problems.
There is absolutely no reason you should be having any.

The question was about the power boost resulting from the 150~ NIS that you wasted for the unit.

The information provided here says that you may get about 100 RPM, in identical conditions, over the baffle equipped, standard OS muffler (not your Super-Tigre).

On the price/performance issue, this item is a failure. It may be light, comfortable, convenient and even attractive, but no cigar in the high performance field.

A model engine is not the most streamlined and beautiful part of the average model. It is the "business end" of the plane.
Anything that does not add a significant, positive functionality to the engine (more power, less noise, better fuel consumption, better idle, better transition), is all but useless.

The weight advantage is about 50 grams; significant, but too small to be paying so dearly for.