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The Z-Fi fuel controller is race-level fuel injector tuning.Benefits 'Wakes up' performance Crisp and responsive throttle Smooths out throttle transitions HP and torque gains How it Works Power is dependent on how well the air / fuel mixture is ignited in the cylinder. Air / fuel ratio (AFR) ..

Replaces OEM part numbers - Yamaha: 1S4-E3440-00, 5D3-13440-00, 5D3-13440-01, 5D3-13440-09Hiflo oil filters provide the highest quality in filtering with a longer life than comparable OEM filters, test results prove 28 percent longer service life than O.E. brands...