Installation and Calibration of the NTK L2H2 wideband O2 to the Hydra Nemesis 2.5Kit Contents: The kit should include both a NTK Wideband O2 Sensor and an O2 Sensor Cable that connects to the Hydra Nemesis2.5.The O2 sensor cable, with the pins connecting to the ECU, is labeled with letters. This is the best way to wire the O2 sensor since color of the wires change from time to time.The pins are connected as follows: A:Grey Connector F1 (labeled) B1 B: Grey Connector F2 (labeled) B2 C:Grey Connector F9 (labeled) B9 D:Grey Connector E11 (labeled) A11 E:Large Blue Connector D7Note: 1.The NTK O2 sensor must be free-air calibrated in open air before installing in an exhaust pipe; failure to do so will result in the wrong readings. 2.The location of the NTK O2 sensor is very important; it should be mounted perpendicular to exhaust pipe, preferably between the 11 and 1 o clock positions. Failure to do so may result in condensation in the heater circuit causing premature failure of the sensor. This is especially important if you plan to leave the wideband O2 sensor in exhaust for an extended period of time. Calibrating the Wideband O2 Sensor1.Connect the O2 sensor cable to the Nemesis ECU according to above instructions. Do not connect the NTK O2 Sensor to the cable at this time. 2.Turn the ignition on 3.Open the Nemesis software 4.Click Upload from ECU 5.Click Maps. The software will load the current map in your ECU. 6.Click Mode in the “Real-time feedback” window. This will change the feedback from the bar graph mode to the digital mode. 7.Look for the value on AFR feedback. This value should be approx 14.7-14.8. If the AFR feedback does not read 14.7-14.8, follow these steps to zero the Stoichometric Reading on the ECU:1. Click on Select Settings Sensor 2.Look for the value of the “Wego Zero Cal”. Enter a value between 126 and 130. 3.Click Enter. 4.Close the “Settings” window. 5.The AFR feedback should now show a value between 14.7 and 14.8. If not, repeat steps 1 to 4 with a different value in step 2.Note: If, after you have attempted all values between 126 and 130, the AFR feedback window does not fall between 14.7 14.8, then the sensor cannot be accurately calibrated by the Nemesis. Contact us before proceeding.Once the AFR reading shows 14.7-14.8, you are ready to calibrate the wide band O2 sensor.1.Connect the NTK O2 sensor to the O2 cable. The Hydra ECU is now ready to free-air calibrate the sensor. 2.Warm up the O2 sensor for about 2 minutes before making any changes to the WEGO Grad Cal. 3.Look for the value of the AFR feedback window. This number should read 20.7 20.8. If the reading is outside of this range, adjust the “Wego Grad Cal” number as follow to calibrate: a.Wego Grad Cal: Change this number to get 20.7-20.8 on the Main AFR feedback window. A good starting value is 180. b.Click Enter each time and close the window to see the changes in the AFR feedback window. 4.Once the Main AFR feedback window reads 20.7-20.8, turn off the ignition and mount the O2 sensor into the exhaust pipe.The wide band O2 sensor is now ready to use.Please contact us if you need further instructions. Hydra EMS America c/o Quantum Performance Development 6167 Jarvis Ave #207 Newark, CA 94560 USATel: 510-870-1550 Fax: 510-740-0911 Email: americasaleshydraems.comHydra EMS Asia c/o Thrust Technology Pte Ltd 7500A Beach Road, #15-320, The Plaza. Singapore 199591 SingaporeTel: +65-9788-0768 Fax: +65-6245-2791 Email: infothrusttechnology.com