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Daisy Chain harness
Part #: 531101
this system improves airflow into the EJ engine for better performance and throttle response
because it was designed by Borla
Subaru OEM Vortex Generator Subaru WRX / STI 2015-2021 | E751SVA000 Wheel Size_18 inch Daisy Chain harnessVortex generators benefit cars that have rear wings because it keeps the air flow hitting the top of the rear spoiler for optimal downforce. It helps the air flow make a smooth transition flowing from the roof and deflecting off the rear spoiler, rather than having the air crash in the low area between your windshield and rear spoiler. Fitment: Subaru WRX 2015 2021 Subaru STi 2015 2021 Warranty Disclaimer: Subaru of America will only warranty parts