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No a tune isn't needed. You can delete the secondary cats also without the need for a tune.
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2SS Hyper Blue Metallic | A8 | Jet Black Interior | NPP Exhaust
Current Mods: Catch Can | aFe Lowering Springs | GM 2nd Gen Splitter | Hotchkis Sway Bars | MRR FS02 Wheels | Flowmaster Exhaust | Dark Tail Lights | Diode Dynamics Sidemarkers | Roto Fab | Solar TB | PRAY Ported IM | BMR | PRAY Tune
Upcoming Mods:
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