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Old 09-17-2020, 02:38 PM   #5
SprinterWRX2018
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Member#: 477013
Join Date: Nov 2017
Location: Massachusetts
Vehicle:
2019 STI Limited
Ice Silver Metallic

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https://dsportmag.com/the-tech/2017-...aust-shootout/
According to the article above they tested 12 different exhaust systems on the same dyno, same exact sti. Could it be possible some cat back systems do increase power?
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