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To maximize weight savings, many S2000 owners remove the Air Pump located in the front driver side bumper. This will immediately throw a cel light/check engine light in the stock ECU code. Ballade Sports Air Pump Bypass, once wired into the ECU harness, will emulate as if the original Air Pump is still installed. This gets rid of the annoying CEL light/check engine light.
This unit comes with complete wiring instructions and diagrams.