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COBB Stage 1 to NexGen Stage 2 + Flex Fuel power package upgrade for 2015–2018 Subaru WRX STI delivers the NexGen Stage 2 flex fuel upgrade path in black. Intended as an upgrade package, it supplies the components needed to move a Stage 1 setup to the NexGen Stage 2 flex fuel configuration, supporting revised fuel regulation when paired with matching tuning and fuel-system modifications.
Cobb 15-18 Subaru STI Stage 1 to NexGen Stage 2 + Flex Fuel Power Package Upgrade - Black
