What does the exhaust flapper valve do?
Inside the factory exhaust pipes are two flapper valves. These spring-loaded valves close the exhaust to reduce the volume, but under acceleration, they open to allow better flow. This is done for comfort and sound; it is a detriment to the performance of the truck.
What is a flapper on exhaust?
Flapper valves prevent backflow and help to protect engines against water intrusion. Heavy-duty rubber flapper valve keeps following seas from entering exhaust outlet when moving slowly or stopping.
What is a passive exhaust valve?
Passive exhaust valves are a key solution, leveraging the physics of the exhaust (flow, temperature, and pressure) to cycle the valve. Such valves are often positioned within the muffler, fully immersed and exposed to exhaust heat, humidity, and corrosion, as well as vibrations from road and engine loads.
What is an adaptive exhaust valve?
The Exhaust System Adaptive Valve is a spring-loaded, self-regulating valve that presents exhaust gas flows with a variable restriction, suppressing low-frequency acoustic energy. This innovation allows automakers to extend the range of the cylinder-deactivation mode, further improving fuel economy.
Who makes GMC performance exhaust?
Borla®
Description: Provide your vehicle with maximum performance and the right sound enhancements with a GMC Accessories Cat-Back Exhaust System by Borla®. This dual-split rear exit cat-back exhaust system gives you aggressive sound and constructed with T-304 stainless steel for corrosion resistance.
How does an exhaust flap work?
In emission control, exhaust gas flaps are used to divert the exhaust gas flow. In this way, they trigger the HC (Hydrocarbon) absorbers or bring the starter catalyst to operating temperature more quickly. By varying the exhaust gas back pressure, the efficiency can be improved in certain characteristic areas.
What do tractor flaps do?
The panels that hang off the back are often called rear tail fairings, trailer tails, or sometimes boat tails. Whatever you call them, their purpose is to reduce drag and save fuel. How much fuel do they save?
What Borla exhaust does GM sell?
BORLA® now offers cat-back systems for the 4.3L V6, 2.7L 4 Cylinder Turbo, 5.3L EcoTec3 V8, and the 6.2L EcoTec3 V8 with a few different tip options and tip exit styles. In addition, there are three sound levels available to choose from.
Who makes the GM cat-back exhaust?
Why do truck exhausts have flaps?
The flaps located on the end of exhaust pipes on semi-trucks are rain caps. These caps prevent rain, snow, and debris from entering the exhaust system and damaging the engine. Water getting inside the exhaust system can lead up to a blown head gasket and result in having to get costly repairs.
What can I do with BimmerLink?
BimmerLink is the direct link to your BMW or MINI. Using one of the supported OBD adapters you can read trouble codes or display sensor values in realtime, check the current state of the DPF in your car or register a new battery after replacement.