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When your vehicle is running at full throttle, your engine also performs at its peak efficiency. To keep it running safely you need to be certain sure all systems are in mint condition and operate properly. Since most factory instrument panels provide a driver with basic information of how the engine works, informing he or she of the vehicle speed, fuel level, and coolant temperature, it is always a good idea to have additional gauges like a fuel rail pressure gauge or exhaust back pressure gauge installed in a vehicle. They allow for more control of your vehicle's operation, so you can rest assured your ride is not only fast but also safe.