Being the king of homemade low $ systems drone can be one PITA and the only place I don't like it, is at cruise speed.
But often find playing with the tips can help change that.
My newest V8 dual system that is nutting but some straight shot cherrybombs n straight pipes had a terrible drone at cruise.
I just played with a extra pieces of pipe that slipped into the end, sort of like changing pitch on a slide horn, more or less pipe.
Ended up just needing a small 3-4 in piece jammed flush into the end of each.
That tiny lip or step at the end made it go away at cruise speed.
If Im at HW speeds the glaspacks cover up any drone.
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