18 Best High Flow Cats of 2022 – Romance University

After hours researching and comparing all models on the market, Romance University finds out Top 18 Best High Flow Cats of 2022. Check our ranking below.

2,003 Reviews Scanned

Rank No. #1

FOMIUZY 2.5 Inch Inlet/Outlet Universal High Flow Front Catalytic Converter Direct-Fit with O2 Port(EPA Compliant)

【Direct Replacement】: If your engine throws P0420 code, or your cat is stolen, then it is recommended to buy this kit to solve the problem. This catalytic converter can repair faults and noise, car exhaust can be purified. It meets or exceeds the oem standard, and has been tested in the factory, perfectly matched with the original car, and can be installed directly.
【High Quality】: The stainless steel body of high-quality aluminized pipes is not easy to rust, ensuring excellent oxygen storage capacity and long service life. The double-layer high temperature resistant ceramic carrier greatly increases the flow rate and surface area, thereby improving power and fuel economy. Replace with a new catalytic converter to provide you with excellent clean air performance, restore the quietness of the vehicle, and restore a good driving experience for you
【Specification】: 2.5" Inlet , 2.5" Outlet , 11" Overall Length.Please check whether your vehicle exhaust has the appropriate size before purchasing to make sure that the standard universal exhaust is suitable for your car
【Standards】: Our catalytic converters have strict production procedures and comply with EPA standards and Obd3 standards. However, due to the increased emission standards in California, Colorado, New York, and Maine, no sales were carried out in these states (friends in these states, please rest assured, we are developing)
【Buy With Confidence】：Our catalytic converter tube pipe assembly has a lifetime warranty. If the part fails or breaks, please contact us for replacement. Save hundreds of dollars off of dealer prices by purchasing this part and taking advantage of our warranty.Price concessions and guaranteed, no need to worry about quality problems

SaleRank No. #2

2-pack 2.5" Universal Catalytic Converter 410250 Three Way High Flow Performance Cat

WARNING: This item does not ship to California, Colorado, New York and Maine. Please check before purchasing.
APPLICABILITY: Fit for universal 2.5 inch inlet catalytic converter, please check your vehicle exhaust pipe for the appropriate size before purchasing to make sure the standard universal exhaust fits your car (Note: Professional installation is highly recommended).
SIZE: inlet 2.5 inches, outlet 2.5 inches, length 11 inches, round diameter 4 inches.
EXCELLENT MATERIAL: Made of high quality T409 stainless steel/ceramic - 400 core, tested and durable, high heat, rust and corrosion resistance even under extreme conditions.
WARRANTY: 2 x UNIVERSAL CATALYTIC CONVERTER, Our 2.5 inch universal catalytic converter is covered by a lifetime warranty. If the part is faulty or broken, you can contact us via Amazon message and we will solve the problem for you.

Rank No. #3

MOCW 2.5 Inch Inlet/Outlet Catalytic Converter Universal Direct Replacement with O2 Port (EPA Compliant), 2 Pack

【Warm Note】Not ship to states such as California, Colorado, Maine, and New York, etc. Please consult your state’s aftermarket converter regulations before purchase it.
【Specification】2.5 Inches Inlet , 2.5 Inches Outlet , 11 Inches Overall Length.Universal fit for vehicles with similar size outer diameter exhaust pipe. Please make sure this item fits your vehicle before purchasing.
【Standards】Our 2.5 Inch catalytic converters have strict production procedures and comply with EPA standards, legal for use on vehicles built to meet Federal EPA standards ONLY. If your vehicle is registered in CA, NY, CO & ME, do not purchase this part.
【High Quality Material & Warranty】Made from high-quality 409 stainless steel, reliable quality and long service life, 5 Years or 50,000 Miles Manufacturer Warranty.
【Easy Installation】Direct Replacement for your original vehicle, may require cutting and/or welding, professional installation would be highly recommended.

Rank No. #4

ASOPARTS 3" Universal Catalytic Converter, 3" Inch Inlet/Outlet Cat Converter with O2 Port (2 Pcs)

[Tips] - This item doesn't ship to California and Colorado, New York, or Maine. Please confirm before purchase.
[Fitment] - Universal Catalytic Converter 3" Inlet , 3" Outlet , 11" Overall Length. Please check whether your vehicle exhaust has the appropriate size before purchasing to make sure that the standard universal exhaust is suitable for your car. (Note: Professional installation would be highly recommended).
[Direct Replacement] -Our 3" universal catalytic converter matches the original car, Internal honeycomb ceramic substrates have porous structure.
[Excellent Material] - The stainless steel body of high-quality aluminized pipes is not easy to rust, ensuring excellent oxygen storage capacity and long service life. High resistance to heat, rust and corrosion even under extreme conditions.
[Warranty] - Our 3 Inch universal catalytic converter has a lifetime warranty. If the part fails or breaks, you can contact us through amazon message for carefree REPLACEMENT or REFUND.

Rank No. #5

WaSaett 3" Catalytic Converter Universal 3 Inch Inlet/Outlet Universal High Flow Front Catalytic Converter with O2 Port Direct-Fit (EPA Compliant)

Attention: This item doesn't ship to California & Colorado & New York, please confirm before purchase.
Wide Compatibility: universal catalytic converter is specially designed to fit a variety of vehicles with similar OD size exhaust pipes.Its standard Outside diameter 3 inch inlet/outlet and 11 inch overall length make it widely applicable. Ensure compatibility with your vehicle before purchase.
High Conversion Efficiency: catalytic converter features internal honeycomb ceramic substrates with a porous structure, maximizing the reaction area and catalysts on the coating surface.This ensures a higher conversion rate of harmful emissions into less harmful substances, reducing environmental impact.
Durable Construction: Crafted from highly corrosion-resistant stainless steel, our catalytic converter offers exceptional durability.It is built to withstand extreme conditions and will not bend or melt. With consistently perfect fitment and superior longevity, you can trust in the reliability of our product.
Exceptional Warranty and Customer Support: We stand behind the quality of our product and offer a 2-year/50,000-mile warranty.In the unlikely event that you encounter any issues, our knowledgeable customer support team is ready to assist you. Purchase with confidence knowing that we have your back.

SaleRank No. #6

TOPAZ 2 pcs 2.5" Universal High Flow Catalytic Converter, Stainless Steel Catalytic Converter 2.5 inch Inlet/Outlet Diameter, 400 Cell (EPA Approved) w/o O2 Port 410250

MATERIALS: Our high Flow Catalytic Converter is Made from Stainless steel and Ceramic Substrate , to provide more oxygen for an increase in power and performance, fully tested under the extreme conditions for heat resistance and service life.
Compatibility: Universal for vehicles with 2.5 inches outer diameter exhaust pipe. Please check product description page below to make sure this item fits your vehicle first.
Easy installing: The complete set high flow converter replaced on the vehicle of left/ right/ front/ rear part. Easy installing. Cutting and Welding may required, professional installation is highly recommended.
EPA CERTIFIED: For use on pre-OBDII vehicles, not legal for use on vehicles required to meet California emission standards. NOT SHIP TO CA AND NY.
WARRANTY: 1 Year Warranty for any manufacturer defect.

Rank No. #7

Osakesukar 2.5" Universal Catalytic Converter 2.5" Inch Inlet/Outlet，2 Pack High Flow Catalytic Converter with Heat Shield and O2 Port

【Attention】This catalytic converter does not ship to California, Colorado, New York and Maine,Please confirm before purchase.
【UNIVERSAL FIT】This catalytic converter is of 2.5-inch diameter inside the inlet /outlet exhaust pipe ，It is compatible with the same size of outer diameter exhaust pipe. Please make sure this catalytic converter fits your vehicle.
【Excellent Materia】This catalytic converter is resistant to wear and corrosion. It is reliable to provide you with more durable use.Internal honeycomb ceramic substrates have porous structure. The improved flow standard can offer your model with better performance.
【PROFESSIONAL INSTALLATION】Our 2.5" universal catalytic converter matches the original car and easily installs to the existing exhaust system. May require cutting and/or welding, Professional installation is highly recommended for it may need cutting or welding.
【Warranty】 5 years warranty. If you have other troubles about this issue, please feel free to contact us. We will reply within 24 hours. Thanks for your support.

Rank No. #8

TOTALFLOW 20016 Straight Through Universal Exhaust Muffler | 409 Stainless Steel | 2.5 Inch Inner Diameter Inlet/Outlet

TOTALFLOW 20016 Straight Through Exhaust Muffler | 409 Stainless Steel | 4" Round Body Width | 6" Body Length | 12" Overall Length | 2. 5" Inner Diameter Inlet/Outlet
409 Stainless Steel Construction With Stainless Steel Mesh and Internal Fill For Perfect Sound Tuning.
Fully MIG welded for long life
Made from heavy gauge material. TOTALFLOW is a USA - California based company
Fit Type: Universal Fit

SaleRank No. #9

MagnaFlow 94006 Pre-OBDII Universal Catalytic Converter, 2.5" Inlet/Outlet (EPA Compliant)

EPA PRE-OBDII COMPLIANT - This catalytic converter is designed to meet or exceed Federal EPA (Environmental Protection Agency) Pre-OBDII emissions requirements. NOT for use in California, Colorado, New York, Maine.
UNIVERSAL INSTALLATION - Universal catalytic converters allow you to place it in the exact location and orientation required for your vehicle. Professional installation is highly recommended.
STAINLESS STEEL CONSTRUCTION - Durable stainless-steel construction and integrated OEM-like O2 ports guarantee optimal catalytic converter performance and reliability. The clamshell design features a continuous seam weld that ensures superior thermal insulation.
STANDARD GRADE - Standard Grade catalytic converters are designed for older pre-1996 OBDII vehicles.
5 YEAR / 50,000-MILE LIMITED WARRANTY - Worry-free ownership is made possible thanks to the 5 year/50,000-mile construction and 25,000-mile emissions warranty included with this MagnaFlow catalytic converter.

SaleRank No. #10

AUTOSAVER88 ATCC0007 2.5" Inlet/Outlet Universal Catalytic Converter (EPA Compliant)

ATTENTION: This item doesn't ship to California & Colorado & New York, please confirm before purchase.
VEHICLE FITMENT: Universal fit for vehicles with 2.5-inch outer diameter exhaust pipe (Note: Professional installation would be highly recommended).
HIGH EFFICIENCY: Internal honeycomb ceramic substrates have porous structure to increase the reaction area, and ensure sufficient catalysts (Pt, Rh, Pd) on the coating surface for a higher conversion rate.
DURABILITY: Adopts heavy-duty T409 stainless steel shell that highly resists heat, rust, and corrosion for longer service life, no worry about bending or melting even in extreme conditions.
WORRY-FREE PURCHASE: EPA Federal Standard Certificated, all AUTOSAVER88's catalytic converters are stamped with an exclusive EPA number on the shell. AUTOSAVER88 offers a 5-year or 50,000 miles limited warranty, for any manufacturer defect.

Rank No. #11

Magnaflow 54956 2.5" High Flow 400 Cell Cat

Catalytic Converters
Ceramic
ZZP brings you a high flowing premium core catalytic converter. It uses a high metal spun core. Testing on the flow bench and the dyno has shown these converters to out perform anything else currently available in the 3800 market.

SaleRank No. #12

Catalytic Converter Inlet/Outlet Universal High Flow Front Catalytic Converter Direct-Fit With O2 Port(EPA Compliant) (3 Inch, 2pcs)

WIDELY USED: Catalytic Converter Universal Standard Inlet/Outlet, Universally Applicable To Vehicles With Similar Od Size Exhaust Pipes. Please Make Sure This Catalytic Converter Fits Your Vehicle!
STANDARDS：Yeoflagtrade Precision Manufacturing High Flow Catalytic Converter EPA PRE-OBDII COMPLIANT: This Catalytic Converter Is Designed To meet EPA (Environmental Protection Agency) Pre-OBDII Emissions Requirements In Compliance！
DURABILITY: The Catalytic Convertor Is Made Of High-Quality Corrosion-Resistant Stainless Steel To Ensure Excellent Oxygen Storage Capacity And Perfectly Extend The Service Life. Double-Layered High-Temperature Resistance Greatly Increases Flow, Thereby Improving Power And Fuel Economy!
EASY TO INSTALL: Yeoflagtrade Universal Catalytic Converters Match The Original Car And Can Be Easily Installed To The Existing Exhaust System. Cutting And/Or Welding May Be Required, Professional Installation Is Highly Recommended.
DIRECT REPLACEMENT: If Your Engine Is Throwing A P0420 Code, Or Your Cat Has Been Stolen, You Need A Universal Catalytic Convertor To Fix The Problem. Yeoflagtrade Catalytic Converters Can Fix Malfunctions And Noises And Purify Car Exhaust. Meets Or Exceeds OEM standards And Is Factory Tested For A Perfect Match To The Original Vehicle, Ready To Install.

Rank No. #13

MAYASAF【2 pack】2.25" Inlet/Outlet Universal Catalytic Converter, High Flow Exhaust Pipe, w/o O2 Port (EPA Compliant), 2 pack

【Attention】 Not ship to states such as California, Colorado, Maine, and New York, etc. Please consult your state’s aftermarket converter regulations before purchase.
【Vehicle Fitment】Standard 2.25 inches inside diameter inlet /outlet, 11 inches overall length. Universal fit for vehicles with similar size outer diameter exhaust pipe. Please make sure this item fits your vehicle.
【Easy Installation】Matched with the original vehicle, installed easily to existing exhaust system. May require cutting and/or welding, professional installation is highly recommended.
【DURABLE】Made from Features HD-Stainless steel, internal structure is fully tested under the extreme conditions for service life.
【Service & Warranty】EPA CERTIFIED, backed in 2 years or 50,000 miles limited warranty, for any manufacturer defect. Kindly let us know if you have any problems, let's make it right!

Rank No. #14

2" 2.5" 3" Inlet/Outlet Universal Catalytic Converter, with O2 Port， High Flow Performance Cat 410300 (3" Outlet Universal Catalytic Converter)

✔【perfect Replacement】:If your engine throws P0420 code, purchase this kit to solve the problem. Our catalytic converter can repair faults and noise, and car exhaust can be purified. Complies with standards specified by the US Environmental Protection Agency
✔【Fitment】:3 Inch inlet/outlet universal catalytic converter. Universal fit for vehicles with similar size OD exhaust. Please make sure this catalytic converter fits your vehicle.
✔【Easy Installation】:Matched with the original vehicle, installed easily to existing exhaust system. May require cutting and/or welding, professional installation is highly recommended.
✔【Attention】:This catalytic converter does not ship to California, Colorado, New York and Maine, please check your state's aftermarket converter regulations.
✔【High Quality】:Made of high quality stainless steel. Highly heat, rust and corrosion resistant for longer life without fear of bending or melting, even under extreme conditions.

Rank No. #15

WaSaett 3" Catalytic Converter Universal 3 Inch Inlet/Outlet Cat Converter with O2 Port and Heat Shield (EPA Compliant)

Attention: This item doesn't ship to California & Colorado & New York, please confirm before purchase.
Wide Compatibility: universal catalytic converter is specially designed to fit a variety of vehicles with similar OD size exhaust pipes.Its standard Outside diameter 2.25 inch inlet/outlet and 13 inch overall length make it widely applicable. Ensure compatibility with your vehicle before purchase.
High Conversion Efficiency: catalytic converter features internal honeycomb ceramic substrates with a porous structure, maximizing the reaction area and catalysts on the coating surface.This ensures a higher conversion rate of harmful emissions into less harmful substances, reducing environmental impact.
Durable Construction: Crafted from highly corrosion-resistant stainless steel, our catalytic converter offers exceptional durability.It is built to withstand extreme conditions and will not bend or melt. With consistently perfect fitment and superior longevity, you can trust in the reliability of our product.
Exceptional Warranty and Customer Support: We stand behind the quality of our product and offer a 2-year/50,000-mile warranty.In the unlikely event that you encounter any issues, our knowledgeable customer support team is ready to assist you. Purchase with confidence knowing that we have your back.

Rank No. #16

Mophorn Catalytic Converter Compatible with 2002, 2003, 2004, 2005, 2006 Toyota Camry & Solara 2.4L, High Flow Cat Stainless Steel Cat Converter with Gasket Kit Exhaust Manifold (OBD III Compliant)

OEM High Flow Design: This catalytic converter is constructed to meet or even exceed OEM quality. Its high flow design provides more oxygen to your engine, dramatically improving your exhaust system. Further, an internal honeycomb structure effectively purifies the waste gases, converting CO, HC, and NOx into CO₂, H₂O, and N₂.
Stainless Steel Structure: The high flow catalytic converter is assembled with a stainless steel body for long-term use, capable of enduring high-temper gases from the exhaust. Its internal ceramic substrates contain high-load precious metal catalysts, including Pt, Rh, and Pd, to enhance purification efficiency and intensity.
Hassle-Free Installation: Our free-flow catalytic converter has standard specification flanges designed for easy installation. Direct bolts exist in the exhaust system without extra modification. The kit also comes with gaskets and hardware for replacement. Professional installation is highly recommended for exerting its max capability.
Standard OBD III Compliant: This high flow converter complies with OBD III Standards, ensuring the exhaust emissions meet the Federal Emission Standards. However, it is illegal to be used in California as the NON-CARB compliant. With this high-quality converter, you have no worry about MIL code issues in your driving.
Vehicle Compatibility: The direct-fit catalytic converter is compatible with 2002-2006 Toyota Camry/Solara 2.4L L4. Please measure the inlet and outlet diameters of the original converter to make sure this item fits your vehicle. OEM number: 25051-0H010, 250510H010, 0H010, 28100, 25051-0H040, 250510H040, 25051-28240, 2505128240, 327-59240, 327-59381, 250510H010, 674-811.

Rank No. #17

TOTALFLOW 12104 Mini Race Exhaust Muffler | 304 Stainless Steel | 2.5" Inner Diameter Inlet - 2.5" Outer Diameter Outlet

TOTALFLOW 12104 Mini Race Exhaust Muffler | 304 Stainless Steel | 3.5 Inch Round Body Width | 10 Inch Body Length | 12 Inch Overall Length | 2.5 Inch Inner Diameter Inlet - 2.5 Inch Outer Diameter Outlet. Fit Type: "Universal Fitment". To help us maintain the lowest prices online, please double check your exhaust size prior to placing your order to avoid restocking and inbound/outbound shipping fees
Constructed from Heavy "Approx. ±16" Gauge 304 Stainless Steel, With 100% Stainless Steel Mesh Internal Fill For Perfect Sound Tuning. Free flow muffler, straight through perforated stainless steel core wrapped with stainless steel mesh to enhances sound, exhaust flow & improves performance.
State of the art - TOP NOTCH - TIG welded for long life. Perfect for any custom exhaust project or muffler upgrade. "UNLEASH THE BEAST WITHIN"
We take pride in our work and products, Top Notch Craftsmanship that is compared to NO ONE in the industry. Compact Race Bullet Mini Universal Muffler - Will Fit Anywhere -not a direct fit. Please note that some adaptation required.
For FITMENT or WARRANTY information, please refer to the MANUFACTURER site.

Rank No. #18

WaSaett Catalytic Converter Universal Inlet/Outlet Universal High Flow Front Catalytic Converter with O2 Port with Heat Shield Direct-Fit (EPA Compliant)… (2.5 Inch)

Wide Compatibility: Our universal catalytic converter is designed to fit vehicles with similar OD size exhaust pipes.With its standard 2.5 inch ID inlet/outlet and 15 inch overall length, it is widely applicable to a variety of vehicles.However, please ensure that this catalytic converter is compatible with your vehicle before making a purchase.
High Conversion Efficiency: Our catalytic converter features internal honeycomb ceramic substrates with a porous structure.This design increases the reaction area and ensures sufficient catalysts on the coating surface, resulting in a higher conversion rate of harmful emissions into less harmful substances.
Durable Construction: Crafted from highly corrosion-resistant stainless steel, our catalytic converter offers exceptional durability.It is built to withstand extreme conditions and will not bend or melt.With consistently perfect fitment and superior longevity, you can trust in the reliability of our product.
Easy Installation: While specialized fabrication and/or welding may be required for installation, our catalytic converter is designed for universal configuration, making it relatively easy to install.We recommend professional installation due to the cutting involved.
Exceptional Warranty and Customer Support: We stand behind the quality of our product and offer a 2-year/50,000-mile warranty. In the unlikely event that you encounter any issues, our knowledgeable customer support team is ready to assist you.Purchase with confidence knowing that we have your back.

How Do You Buy The Best High Flow Cats?

Do you get stressed out thinking about shopping for a great High Flow Cats? Do doubts keep creeping into your mind? We understand, because we’ve already gone through the whole process of researching High Flow Cats, which is why we have assembled a comprehensive list of the greatest High Flow Cats available in the current market. We’ve also come up with a list of questions that you probably have yourself.

Romance University has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for High Flow Cats that you consider buying. Your questions might include the following:

Is it worth buying an High Flow Cats?
What benefits are there with buying an High Flow Cats?
What factors deserve consideration when shopping for an effective High Flow Cats?
Why is it crucial to invest in any High Flow Cats, much less the best one?
Which High Flow Cats are good in the current market?
Where can you find information like this about High Flow Cats?

We’re convinced that you likely have far more questions than just these regarding High Flow Cats, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for High Flow Cats, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible High Flow Cats. Make sure that you are only using trustworthy and credible websites and sources.

Romance University provides an High Flow Cats buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information. How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available High Flow Cats currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

Brand Value: Every brand of High Flow Cats has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
Features: What bells and whistles matter for an High Flow Cats?
Specifications: How powerful they are can be measured.
Product Value: This simply is how much bang for the buck you get from your High Flow Cats.
Customer Ratings: Number ratings grade High Flow Cats objectively.
Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their High Flow Cats.
Product Quality: You don’t always get what you pay for with an High Flow Cats, sometimes less, and sometimes more.
Product Reliability: How sturdy and durable an High Flow Cats is should be an indication of how long it will work out for you.

Romance University always remembers that maintaining High Flow Cats information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding High Flow Cats is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly! We’re here for you all the time. Contact us here. Or You can read more about us to see our vision.

18 Best High Flow Cats of 2022 – Romance University

How Do You Buy The Best High Flow Cats?

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