Drone Management System™ by MRT MRT uses a unique process to design and engineer performance exhaust systems that minimize drone. What is exhaust
system drone? When you have an after-market performance exhaust system (and
it’s not an MRT exhaust system!), you may experience drone. Drone feels like an
uncomfortable noise or vibration you experience while cruising at a particular
speed. The definition of drone is “a monotonous low tone; a humming
or buzzing sound” (dictionary.com). In physics, resonance is “a phenomenon that
occurs when a given system is driven by another vibrating system or external
force to oscillate with greater amplitude at a specific preferential frequency”
(wikipedia.com). Resonance between the exhaust system and the vehicle is what
causes drone. Why does drone occur
is some exhaust systems but not others? Drone is a function of several factors including the vibration
of the exhaust system, the ratio of the transmission and rear gearing, the mass
of the vehicle, and the engine RPM. The RPM at which the engine turns while
cruising at highway speeds is the main factor in drone. When drone occurs, it’s
usually between 1800 and 2100 RPM, which is approximately where your engine
runs when in a high gear cruising down the highway. Drone doesn’t occur with a stock exhaust system because a
stock exhaust system is very quiet (relative to an after-market performance
exhaust system), and is part of the automobile manufacturer’s overall noise,
vibration, and harshness (NVH) engineering package. When you upgrade your vehicle with an after-market exhaust
system, the flow of exhaust gases through the exhaust system is increased by
less restrictive mufflers and catalytic converters as well as larger diameter
and perhaps rerouting of the exhaust pipes. Improving the flow of exhaust gas
improves the performance and the muscle car sound of your vehicle. A potential downside of improving exhaust gas flow in this
manner is that the increase in sound and change in flow alters the resonance of
the vehicle. What is the Drone
Management System™ by MRT? At MRT, we design and engineer MRT Brand performance exhaust
systems to minimize drone. MRT’s unique process analyzes the drone of each
new product configuration for a particular vehicle year/make/model, then applies
mathematics and engineering principles and adjusts the resonant frequency of
the system to minimize drone at the RPM for highway cruising speeds. Some MRT Brand performance exhaust systems for a particular vehicle
year/make/model require more resonant frequency adjustment than others, and
some require none at all. Why should I purchase
an MRT Brand performance exhaust system for my vehicle? Because of the MRT Drone Management System™, you can
purchase with confidence the MRT Brand performance exhaust system for your
vehicle to achieve the performance and muscle car sound you’re looking for and
know that drone won’t be a problem! |