Will they fit my 348 or Mondial T?

Yes to both. The Sport Cats for Ferrari 348 fit all 1989-1995 Ferrari 348 models and also fit the Ferrari Mondial T, which shares the same 3.4L V8. They bolt to the factory mounting points as a direct fit with no cutting or welding, so the installation is the same on either car.

Will they cause a check engine light?

No. These are high-flow HJS catalytic converters that retain proper emissions function, so Fabspeed guarantees no check engine light on a properly tuned, healthy car. That is the advantage of running Sport Cats rather than a race-only setup: you get freer flow and more power while keeping the dash clean and the car street-usable.

Are they street legal?

They are not CARB approved, so they are not for sale in California or other states that require CARB certification. In non-CARB states they retain catalytic function and run without a check engine light, but you should confirm your local emissions requirements before buying, since high-flow cats are not certified the same way factory units are.

How much power do they add?

Fabspeed measured gains of +11 horsepower and +12 lb-ft of torque. Those figures come from a specific car at ambient conditions, so results vary with your configuration, fuel, and tune, but the freer-flowing HJS cores sharpen throttle response and bring out more of the 348's high-pitched character across the range.

Do they help with the 348's cat-failure problem?

Yes, that is a major reason owners fit them. The factory 348 catalytic converters are known to overheat and fail, which can cause real damage. These replace that system with durable, free-flowing HJS Tri-Metallic Sport Cats, so you address a known weak point while gaining power and sound at the same time.

What are the Sport Cats for Ferrari 348 made from?

They use 200-cell HJS Tri-Metallic high-flow catalytic converters in CNC mandrel-bent T304L stainless steel, a corrosion-resistant grade that holds up to exhaust heat. The HJS cores let the system flow far more freely than the factory units while still functioning as proper catalytic converters, which is how they add power without a check engine light.

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Description

Fabspeed Sport Cats for Ferrari 348

The Fabspeed Sport Cats for Ferrari 348 free up the 3.4L V8 by replacing the restrictive, failure-prone factory system with high-flow 200-cell HJS Tri-Metallic catalytic converters. Built in Fort Washington, Pennsylvania by a shop that designs, dyno-tests and race-validates its own hardware, these use German HJS cores that add real power and a sharper voice while keeping proper emissions function and no check engine light. CNC mandrel-bent T304L stainless construction and a direct bolt-on fit make this both a performance upgrade and a cure for the 348’s notoriously troublesome factory units, with no cutting or welding required.

Features

High-flow 200-cell HJS Tri-Metallic catalytic converters that take the place of the restrictive, failure-prone factory system
Adds +11 whp and +12 lb-ft of torque (figures are from a specific vehicle at ambient conditions and will vary)
A moderate increase in volume with more high-pitched motorsport character and no interior drone
No check engine light, guaranteed
CNC mandrel-bent T304L stainless construction
Simple DIY bolt-on installation, no cutting or welding required; Level-1 install difficulty
Backed by the Fabspeed Lifetime Warranty

Applications

Ferrari 348: 1989-1995 | 3.4L V8
Ferrari Mondial T: 1989-1993 | 3.4L V8

Notes

Also fits the Ferrari Mondial T, which shares the 348’s 3.4L V8
Not CARB approved; not for sale in California or other states that require CARB certification
These Sport Cats retain full catalytic function, so they do not trigger a check engine light
For a track-only setup, Fabspeed also offers Race Pipes for the Ferrari 348
Fabspeed products are built to order and typically ship within one week, though lead times are often shorter

Frequently Asked Questions

Will they fit my 348 or Mondial T? Yes to both. The Sport Cats for Ferrari 348 fit all 1989-1995 Ferrari 348 models and also fit the Ferrari Mondial T, which shares the same 3.4L V8. They bolt to the factory mounting points as a direct fit with no cutting or welding, so the installation is the same on either car.
Will they cause a check engine light? No. These are high-flow HJS catalytic converters that retain proper emissions function, so Fabspeed guarantees no check engine light on a properly tuned, healthy car. That is the advantage of running Sport Cats rather than a race-only setup: you get freer flow and more power while keeping the dash clean and the car street-usable.
Are they street legal? They are not CARB approved, so they are not for sale in California or other states that require CARB certification. In non-CARB states they retain catalytic function and run without a check engine light, but you should confirm your local emissions requirements before buying, since high-flow cats are not certified the same way factory units are.
How much power do they add? Fabspeed measured gains of +11 horsepower and +12 lb-ft of torque. Those figures come from a specific car at ambient conditions, so results vary with your configuration, fuel, and tune, but the freer-flowing HJS cores sharpen throttle response and bring out more of the 348’s high-pitched character across the range.
Do they help with the 348’s cat-failure problem? Yes, that is a major reason owners fit them. The factory 348 catalytic converters are known to overheat and fail, which can cause real damage. These replace that system with durable, free-flowing HJS Tri-Metallic Sport Cats, so you address a known weak point while gaining power and sound at the same time.
What are the Sport Cats for Ferrari 348 made from? They use 200-cell HJS Tri-Metallic high-flow catalytic converters in CNC mandrel-bent T304L stainless steel, a corrosion-resistant grade that holds up to exhaust heat. The HJS cores let the system flow far more freely than the factory units while still functioning as proper catalytic converters, which is how they add power without a check engine light.

About Fabspeed

Fabspeed Motorsport is situated in Fort Washington, Pennsylvania, within the United States of America. Their extensive 26,000 sqft. facility serves as a hub for various car clubs, including Porsche Club of America, Ferrari, McLaren, Lamborghini, and more. The company is renowned for its comprehensive approach to product development. They handle the entire process, from design and engineering to dyno testing, street trials, and racing assessments, ensuring the quality and performance of every item. Fabspeed also collaborates closely with race engine builders and tuners hailing from Italy, Germany, and the United States, resulting in the creation of the Ultimate Performance parts. To cater to their passionate global audience, Fabspeed meticulously crafts systems using aerospace-grade austenitic stainless steel, titanium, and carbon fiber materials, setting a standard for excellence in the industry.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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Fabspeed Sport Cats for Ferrari 348 [FS.FER.348.SC]

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Fabspeed Sport Cats for Ferrari 348

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Notes

Frequently Asked Questions

About Fabspeed

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