Bradycardia = too slow. A heart rate of less than 60 beats per minute (BPM) in adults is called bradycardia. What's too slow for you may depend on your age and physical condition. Physically active adults (and athletes) often have a resting heart rate slower than 60 BPM but it doesn't cause problems and is normal for them.
Using technology similar to the Jet PCM, the Jet module provides the ultimate in power tuning. Point-by-point air/fuel, ignition advance, transmission, and various other tuning points provide performance gains and, in some cases, improved fuel economy.
Next is the VATS module. It does most of the security work. It is the brains of the system. The module is what actually reads the resistance, but has to do it via the contacts in the lock cylinder and the related wiring. Think of the module as a Multimeter, and the wires and contacts the Multimeter Leads.