A. Entry Cone
Hot exhaust gases entering the tapered inlet section are actually accelerated as they pass through the perforated cone into the outer core area. The perforation pattern and entry angle are specifially engineered into each product to provide optimum airflow characteristics. The sound energy is reflected and redirected back into itself as well as into the outer thermal core by the carefully selected taper angle of the entry cone.
B. Laminar Flow Area
The hot exhaust gases are released and allowed to expand into this section in multiple layers due to the tapered angle of the entry cone. This produces a controlled laminar flow pattern, that reduces turbulence inside the muffler. Sound waves lose energy in this section through the expansion of the exhaust gases and reflective angles of the cones which direct the waves into the thermal barrier material.
C. Thermal Barrier
The thermal barrier between the outer core section and muffler case provides a portion of the mufflers sound energy absorbtion characteristics. This thermal barrier is engineered to deliver much lower exterior case temperatures, allowing the muffer to be placed closer to heat sensitive areas
D. Exit Cone
The increased surface area and angle of the tapered exit cone provides an "easy exit" for the hot exhaust gases that encourages the flow out of the muffler. The carefully selected taper angle of the exit cone directs and focuses the sound energy back into iteself. This convergence of sound waves reduces the sound level as it passes out of the muffler.
HP-2 Shorty Muffler
2.5'' Inlet/Outlet
12.00” X 4.00” X 5.50”
T409 Stainless Steel $109
T304 Stainless Steel $139
HP-2 Standard Muffler
2.5'' Inlet/Outlet
18.00” X 4.00” X 5.50”
T409 Stainless Steel $139
T304 Stainless Steel $179
“409 Stainless is generally considered a lower grade of stainless, but with very high durability and toughness. For this reason it is widely used in OEM exhaust applications. Although it can be polished, it is subject to "coloring" when exposed to high temperatures. 304 Stainless has a higher nickel content which allows it to accept and maintain a mirror like finish when polished. as always beauty has a price, as the higher nickel content makes the material more brittle and susceptible to cracking.”
“Many people are now familiar with the chambered "tinny" sound of a Flowmaster; The Hushpower is nothing like this. The sound provided by a Hushpower is a smoother and more refined tone. It is similar to other packed type mufflers, but without the raspy cracks or pops generally associated with these straight through designs.”
“The correct pipe diameter on your exhaust is crucial to having a good running system. Hushpower has done testing in this area on high end race vehicles as well as street vehicle. The best formula to use is by matching your total horsepower output to a diameter of pipe. Testing shows that at about 200-300hp is 2.25", 300-400hp is 2.5", 400-500hp is 3", 500+ 3.5" or bigger. These general guidelines apply to dual exhaust, and work well with most vehicles but may vary depending on engine setup. Going to small can constrict your exhaust in the upper RPM's while going to big can hurt your low end torque.”
“ Upgrading your exhaust for your vehicle is one of the best upgrades you can perform. Most stock exhaust do a bad job of getting your exhaust out properly, so modifying it correctly is very important. Do you go dual or do you keep the single setup? Dual can be great for older vehicles or race vehicles that you step on the pedal to get to the finish line, but are not concerned with economy. Testing has proven that a single exhaust configuration on current stock vehicles is the most efficient. One muffler setups have been engineered to utilize the computer in modern day vehicles. It’s really the computer that controls the show by optimizing fuel needed to propel your vehicle. A single exhaust accompanies the controlled pulse which is created by the computer and maintained with a smaller total output diameter.”
“Under load or going up hills puts the greatest force on your vehicles engine. That force makes your engine work harder and therefore creates more exhaust which can choke your exhaust pulse. This can be corrected by having a good pipe diameter to match your vehicles horsepower output and a muffler that draws the exhaust out. With most trucks mid size or larger a 3â€
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