I had same problem with Roush A/B. Drone @2100 was awful. Needed more restrictive mufflers.
1. GT500 "13" Quad pipes (regular dual will work). Eliminated all the drone. Was running Cat Delete; FRPP X . I loved the Boss side w/H pipe. However, opted for Torque Arm Kit and had to convert to X. Handling over sound.
2. Recently installed Kooks LT with O/R X (no cats/ OBD2 in tune) Deleted the resonators and Kinney Muffler installed straight pipes.
3. The sound is finally where I wanted it from the beginning. Cruising and I can talk on phone, no drone, etc. Fun begins on acceleration.
Hope this helps.
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2013 Boss 302 PW, Recaro, Torsen, AED tune, Airaid CAI, MGW, Hotchkis Springs/LCA, Whiteline Relo, CHE K Member w/Torque Limiters, Griggs Torque Arm Kit, T/A rear girdle, Kenny Brown Pan Hard Bar, Whiteline Tranny Bushing, JPC Linelock, JPC stainless clutch line, MT ET Street Radials (when needed), , 2013 GT500 Quad Axle Backs, Kooks LT 1 3/4, O/R X Pipe, Resonator Delete, JPC Line Lock,JPC Clutch Line.
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