Thanks for the great reply. I too consider drone to be the panel rattling, ear pounding, head shattering resonant frequency. Loud and drone are absolutely different.
I'm glad to hear the Stillen/Berk setup is drone free. The only extra question I have is how the sound differs from stock at idle and normal cruise. Do you and local bystanders know you have an aftermarket exhaust or is it completely under the radar in these ranges? I love that it comes alive with throttle, but I want to know it's there ALL the time
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I may be placing my order very soon!