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Before I installed long tubes I was running solo hiflow cats and their Mach XL cat back. No drone, reasonable when cruising, deep and loud at WOT. I liked the setup, wife loved it. Mine is a coupe so not sure about sound with top down.
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Comp. Cam, Borla Headers, Roto Fab Intake, Solo Mach XL exhaust/Cat Delete, JPSS Sway Bar & Radius Arm Inserts
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