How to ELIMINATE drone on any vehicle!

[dirtydeeds]

Here's some quick pics of the Helmholtz resonator I built today. Some people call it a 'j' pipe. You can build it straight or bent, either way it ties into the exhaust stream and is capped off. This changes the tone of the exhaust so that it doesn't match the tone of the engine which eliminates drone.

 

[MD_Weems]

Awesome post - thanks for the in depth pics

 

[antonino]

How long did it took you to build this Helmholtz? You said you did this in a day?

 

[danstpierre]

You should have at least a day to finish this. As long as the tools and materials are complete.

 

[TruckRider]

these is great post... Nice work.. How much would it cost?