Are you leaving horsepower on the table? If you’re chasing more power and efficiency from your ride, one component might be holding you back: your catalytic converter. In my latest video on Bullnose Garage, I dive deep into the world of catalytic converters, exploring everything from OEM options to high-flow catalytic converters, and even the controversial choice of running a catless exhaust system.
Not sure where to start? Let’s take a look.
What’s the Deal with Catalytic Converters?
Catalytic converters, or “cats,” are an essential part of your vehicle’s exhaust system. They use metals like platinum, palladium, and rhodium to reduce harmful emissions, turning toxic gases like carbon monoxide into less harmful ones like carbon dioxide and water vapor. Sounds great, right? Except OEM catalytic converters weren’t exactly designed with performance in mind.
That’s where high-flow cats come in. These performance-focused units let more exhaust pass through, reducing back pressure and allowing your engine to breathe freely. Think of it like sipping a thick milkshake through a wide straw instead of a tiny one—it’s just more efficient. If your ride is running aftermarket headers, a performance camshaft, or a stroker motor (like the 408 ci Windsor build I’m working on), high-flow cats can make a noticeable difference.
Why Consider High-Flow Cats?
Let’s face it: stock catalytic converters are all about meeting emissions standards and keeping costs low. They’re not exactly performance-friendly. High-flow catalytic converters, on the other hand, are optimized for better airflow and increased power. They strike a balance between emissions control and performance, making them a smart choice for anyone looking to unlock the full potential of their build.
In the video, I take a close look at a set of 3-inch high-flow catalytic converters sent to me by Dynovox. Right out of the box, these units impressed me with their stainless steel construction, open-cell design, and overall build quality. They’re designed to handle higher exhaust temperatures and provide better flow compared to OEM options. But are they right for everyone? That’s where things get interesting.
The Legal Side of Things
High-flow catalytic converters come with their own set of challenges—mainly around legality. Most high-flow cats, including the ones I reviewed from Dynovox, aren’t CARB compliant. That means they don’t meet the strict emissions standards required in states like California, New York, Maine, and Colorado. For those of us in less restrictive states, like my home state of New Mexico, they’re fair game. But if you’re planning to sell your vehicle or drive through a state with tighter rules, this is something to keep in mind.
And what about going catless? Sure, ditching catalytic converters entirely might seem like the ultimate power play. No restriction, no compromise, right? But going catless is illegal for street use in most places, not to mention bad for the environment. It can also cause check engine lights and issues with your ECU. High-flow cats, on the other hand, offer a solid middle ground—better performance without fully throwing emissions out the window.
How Do They Stack Up?
In the video, I walk you through the differences between OEM, high-flow, and catless exhaust setups. Each has its pros and cons, but high-flow catalytic converters really shine in modified vehicles with higher-than-stock airflow requirements. If your ride is a daily driver or weekend grocery-getter, you probably won’t see much benefit. But if you’re pushing your build to its limits, high-flow cats could be just what you need to maximize performance.
Dynovox Black Friday Sale
If you’re considering an upgrade, now’s the perfect time to act. Dynovox is running a Black Friday sale from November 27 through December 2, with up to 50% off select products. Whether you’re looking for high-flow catalytic converters, headers, or other performance exhaust components, this sale is worth checking out. Visit https://DynovoxParts.com/?ref=bngarage for details. If you’re not catching the Black Friday event, use my code “BNGarage” for 15% off all the time!
What’s Your Take?
Are high-flow cats in your future? Or are you sticking with your trusty OEM setup? Maybe you’re tempted to ditch emissions entirely and go catless. Either way, I’d love to hear your thoughts. Watch the video for a full breakdown of the options, then drop a comment there to let me know where you stand.
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