How tight should I put them in?

also, I plan on coating the threads on the sensor real good with antisease (sp?)...any other jewels of wisdom form people who have BTDT?

MPI Multiport Fuel Injection (MFI) system, servicing
Heated Oxygen Sensor (HO2S), removing and installing
Removing

? Disconnect heated oxygen sensor harness connectors (for locations => Page 24-1).
? Remove cable tie.
? Remove heated oxygen sensor.
Installing

Note:

? Cable ties must always be re-installed at the original locations when installing the sensor to help prevent contact between the sensor wiring and the exhaust system.
? Coat the threads of the oxygen sensor with an anti-seize compound. Do not allow compound to enter the slots in the body of the sensor.
Tightening torque: 50 Nm (37 ft lb)

and seize the threads unless you have about $50 to spend on the good 2400*F stuff.<ul><li><a href="http://www.acehardwareoutlet.com/(vskwya55pmuvyr55e4mhd2ms)/ProductDetails.aspx?SKU=1000003897">Hi-Temp Nickel Anti-Seize</a></li></ul>