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05. One of the biggest mistakes rookie nitrous installers make is using Teflon(R) tape to seal the pipe threads on the various nitrous fittings. The tape is often applied improperly and either comes unraveled from the threads or gets sucked into the nitrous and/or fuel line and clogs the jets. This leads to rich/lean conditions and big problems. NOS recommends using a dab of liquid Teflon(R) thread sealant. Don't smother the threads with the sealant, just add a dab. As you tighten the fitting in, the sealant will work its way into the threads and form a tight seal.