| This is the exact description of what it is good for: HKS’ ALC (Automatic Line Controller) is a plug-in interface for OEM computer controlled automatic transmissions in the ‘90-’96 Nissan 300ZX that maintains constant line pressure, ensuring consistent and precise high performance shifting. Should the pressure begin to drop within the transmission, the ALC will signal the factory A/T Control Unit to increase line pressure and maintain it at the correct level. I'm guessing that with the tranny keeping constant pressure throughout the powerband, you would be keeping more of your power to the wheels instead of being lost in the drivetrain.
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