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the only after market exhausts that are not going to drone have Helmholtz chambers. valved or not, without the Helmholtz chambers they will drone.
unfortunately the best sounding exhausts at wot drone like crazy. I had an amazing sounding exhaust but the drone was killing me so i had to change it out for none drone design.
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2009 M3 DCT ESS625+ SOLD
2015 M4 BSM/Silverstone F4LCON
@texasMclub IG @jagemoets |