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I had 36" custom J pipes installed for drone at around 1.2K RPMS. What little drone that was left did occur at a slightly higher RPM. My J pipes aren’t adjustable but the drone is no longer an issue for me. I have high flow cats.
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2010 Black 2SS L99
Mods:
* CAI Intake
* Magnuson MP2300 TVS Supercharger/RDS Spacer
* Vector Motorsports Tune
* Stainless Power LT/Hi Flow Cats/Tru X-* Pipe/36" J-Pipes/40 Series
* R1 Concepts ceramic pads and slotted/drilled rotors
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