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Should you buy a high flow catalytic converter?

If you’re looking for a new catalytic converter and you’re a performance enthusiast, chances are you’re considering purchasing a high-flow catalytic converter. If not, then you should read this article and consider the benefits.

Let me tell you what this article is not about. I’m not going to talk about the boring OEM universal catalytic converters you put in your mom’s minivan. I’m going to be talking about performance parts whose sole purpose is to increase the horsepower and torque of your vehicle. If you are just looking for a replacement jack for your 92 Chevy Cavalier, then this article is not worth reading. So let’s get down to business, okay?

I’m going to assume you have a performance vehicle, or at least a production vehicle that you plan on modifying. If you’re not familiar with high-flow catalytic converters, let me explain what they are and how they help your car gain horsepower.

First of all, the purpose of the catalytic converter is to convert the toxic exhaust gases of the engine into cleaner and more environmentally friendly substances. This is done by using a catalyst inside the device, hence the name “catalytic” converter. The problem with OEM or aftermarket OEM jacks anyway is that they restrict airflow. This is mainly because they are designed to work as efficiently as possible with little focus on increasing the power of your vehicle. Your 95 Honda Civic wasn’t built to be a performance machine out of the box, but that won’t stop you from changing that! The high-flow catalytic converter was created with performance in mind, ultimately allowing more air to flow unrestricted through the entire exhaust system. The best case scenario would be no jack at all, and many people who race their cars don’t have a catalytic converter, but if you’re looking to make your car street legal, then your car must have a jack to pass emissions tests during the inspection.

So how does a high-flow catalytic converter help your car’s performance? Should I buy one? Well first let me ask you, do you have aftermarket headers or exhausts on your vehicle? If not, then a high flow cat is not what you should buy yet. I think of a performance cat as the third part of your aftermarket exhaust system. The most important piece of your exhaust system is the Cat-Back. This is all the tubing that comes after your catalytic converter. The second most important piece is a high flow exhaust manifold, or headers. These come before the cat. Without one or two of those parts installed on your car you would not buy a performance cat as it is the least important and will not be as effective if not paired with a high flow exhaust system.

If you have an aftermarket exhaust system, then a high-flow catalytic converter might be the next logical part to buy. The more freely your engine’s exhaust gases flow, the more power your car will make. If you have a high performance cat-back and headers, then a normal cat will cause an airflow bottleneck, and that’s something we don’t want. By installing a high performance jack, you will increase airflow and gain more power. How much power will you gain? Well that depends on the size of your engine. The larger V6 and V8 engines will see a bigger power increase than the i4s. This is because they produce much more exhaust gases. But for simplicity, we’ll say that adding a high-flow jack can increase your horsepower from 4 hp to 10 hp. If that sounds like a win you’d like to profit from, then buying a high-flow jack might be the right choice for you.

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