Build Project
Subaru WRX / WRX STI
Team:
publishedFebruary 3, 2026
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Views: 3
We install a Remark USA cat-back exhaust system and then move on to COBB Tuning's NexGen Stage 2 + Flex Fuel Power Package for an emissions-compliant solution to adding significant horsepower to our 2015 Subaru Impreza WRX STI on both pump gas and E85.
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We install a Remark USA cat-back exhaust system and then move on to COBB Tuning's NexGen Stage 2 + Flex Fuel Power Package for an emissions-compliant solution to adding significant horsepower to our 2015 Subaru Impreza WRX STI on both pump gas and E85.
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