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hello everybody, this is an update of my developement, br500 custom muffler super silencer 2.0. on this 2.0 version i ve used another system that gave much better results in terms of decibel. instead of remove the 2 chambers, i left it intact and add insulation to both. I am going to mesure the...

those are some pictures of the stihl br600 custom muffler job done the tail pipe looks an old buick from the 70 with straight pipe loool the tail pipe is important to produce the final note in the sound

Hello guys i want to share with you how i made a prototype of the quieter backpack blower in the world. The idea is to remove the chambers inside the stock muffler and build a tunnel with drilled pipe and fiberglass around to low the decibel. it worked pretty good. now it sound much more quiet...