The extension to the tail pipe is not going to help in reducing the noise level. That like others mentioned is for diverting fumes. If you ever go to a FMCA rally they are required because everybody is sandwiched in tight and you do not want the neighbor complaining that fumes are choking them. Some newer Tour Masters have had problems with the noise level from Generac generators that were installed on some of them. They are loud in comparison to the Onan diesel. I have the Onan Quiet diesel 7800 and it is so quiet you can barely here it running. About the only thing that would quiet your generator is to change the muffler and put one that will quiet that engine down.
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2002 Gulf Stream Scenic Cruiser
2018 Buick Envision Essence
Neway Freightliner chassis
Aventa II Blue Ox
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