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GPF/OPF Back System - Non-Valved - EC Approved
Resonated - EC Approved
Non-Resonated - Louder
Resonated (quieter). Uses Original Tailpipe. EC-Approved
Non-resonated (louder). Uses OE Trim
Resonated (quieter). Requires a Stage 2 ECU remap
Non-resonated (louder). Requires a Stage 2 ECU remap
For track use only.
Requires a Stage 2 ECU remap
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