Twin Tuner Fuel Injection ControllerTwin Tuner FI tuner FLH T14 up The Twin Tuner allows easy adjustments to OEM Delphi fuel injection systems to improve performance and match the requirements of performance parts. Features mode and up down pushbutton switches to make fuel trim adjustments in the RPM and throttle position (TPS) ranges required by most applications. You can add up to +30% or subtract down to 20% fuel. Fuel trim value is displayed on a bright daylight readable LED
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