If you're wondering what the hype behind aftermarket performance systems is and whether you should get one for your Holden Commodore VE, I'll be talking precisely about that henceforth. Aftermarket performance systems are the most cost-efficient power boosting solution you can possibly get. As is with most things in life, what goes in must come out, and engines are no different. The engine sucks air and fuel, and releases exhausts as a result of the combustion process that occurs in it. In case you weren't aware, stock exhaust systems are made to be affordable in order to reduce the overall cost of the vehicle, and the Holden Commodore VE stock exhaust is no different. Aftermarket Holden Commodore VE V6 exhaust systems, on the other hand, are made of higher-grade materials like aluminised and stainless steel, feature wider diameter pipes, mandrel bent tubing, high-flow catalytic converters and performance extractors, allowing the in and out process to be much more efficient. Your Holden Commodore VE V6 exhaust system will probably feature a dual exhaust, meaning you should look for dual or twin head exhaust systems when shopping. Why does this matter? Well, because your engine is quite large and probably features two exhaust manifolds, one for each head. Although you can still get away with a single exhaust system, you're probably going to lose some power due to backpressure. Furthermore, aftermarket dual exhaust systems look and sound amazing as well. You'll find exhaust systems with mufflers that give your Commodore a deep-pitched or high-pitched tone, depending on your preference, and exhaust tips that come in a wide range of shapes, sizes and finishes. That being said, you can add a ton of personal touch to your Commodore and make sure there's no other like it.
When shopping for aftermarket exhausts, you'll find header-back, cat-back and axle-back exhaust systems. The difference between them is, as their names imply, how much of the stock exhaust they replace. Header-back systems replace the entire stock exhaust system, and as a result, offer the most performance benefits. Cat-back exhaust systems replace everything from the catalytic converter to the exhaust tips and they offer fewer benefits than header-back exhausts but more from axle-back exhausts. And axle-back exhausts replace the mufflers and tip, so they only provide improvements in the sound and looks department. That being said, you get what you pay for, so depending on what your expectations from the new exhaust system are, choose accordingly.
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