Making your exhaust sound louder and deeper can be as simple as simply replacing your muffler. Many V8-engined car owners don’t want to muffle the roar of their engines and are always looking for ways to improve the sound of their vehicles. The basic muffler design you are looking for to make your car sound louder is a direct muffler. Mufflers designed to silence engine exhausts wrap the exhaust gases once or twice inside the muffler to dampen sound. Some owners have found that a straight pipe is enough instead of fitting a replacement muffler. With V8 engines, you can also fit a cross tube just after the exhaust manifold manifolds to give the engine exhaust a different sound. The sound will be much louder, but this may be what you are looking for.

The distinctive sound of the V8 comes from the uneven exhaust pressures on either side of the engine, which is a direct result of having an odd firing order. The very distinctive exhaust sound a V8 crossplane makes comes from the irregular firing order. Crossplane refers to the crankshaft design used in most automotive V8 engines. These crankshaft designs provide smoother operation due to the large crankshaft counterweights used to balance engine vibrations. In front of a crossplane is a flat plane crank that is often used on high performance V8 engines for its high rev capabilities in exchange for rougher operation.

Every time two cylinders fire on the same side in sequence, the two exhaust pulses create high exhaust pressure and a noise that can be heard through the tailpipe. This is repeated later in the firing order on the other side of the engine. Balance tubes are often used to equalize the large exhaust pressure difference between each side of the engine. Pressure equalization improves exhaust gas removal, especially at low RPM. This is the reason why after the mufflers, later modifications to the exhaust system will include a cross tube of a larger diameter or of a different design. The final exhaust system modification you can make is to replace your V8 engine’s exhaust manifold with headers, which when properly designed will improve power and give your engine a more aggressive sound. Some “tips” you will hear or read online is about removing the catalytic converters to produce a louder sound in your engine. While this may be the case, jacks are a legal requirement to operate a motor vehicle and it is irresponsible to remove them.

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