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The COBB Fuel Regulator Kit for 2008–2021 Subaru STI supports NexGen Stage 2 and Flex Fuel Power Package upgrades. Specified for STI NexGen upgrade paths, this regulator kit addresses fuel delivery control required by the listed NexGen and Flex Fuel configurations, making it a component in COBB’s documented upgrade sequence for these Subaru STI platforms.
Cobb 08-21 Subaru STI NexGen Stage 2 to NexGen Stg 2 + Flex Fuel Power Package Upgrade
