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1st dyno pic are “stock” (Mishimoto inlet tube and STI axle back exhaust) runs.
2nd dyno pic is with the HKS GT-Spec catted header installed and a BMC drop in air filter comparing it to stock.
An extra 11.4kW (15hp) at the wheels and more low end torque. If you’re sitting on the fence about getting a header and tune, I’d recommend it.
Last edited by Dirty Harry; 10-02-2022 at 11:05 AM.
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