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High-Flow Cats Discussion - HFC

I'm pretty sure high flow cats have dyno'd much higher than just just 5whp whether it is 8whp or 15whp or somewhere in between, opening up the biggest restriction in

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Old 05-15-2014, 11:24 AM   #14 (permalink)
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I'm pretty sure high flow cats have dyno'd much higher than just just 5whp whether it is 8whp or 15whp or somewhere in between, opening up the biggest restriction in the exhaust is going to produce nice gains under the powerband and improve driveability.
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