Will the Fabspeed High Flow Sport Cat fit my 964 Carrera, Carrera 4, RS America, or Speedster?

Yes. It's a direct bolt-on fit for the full 1988-1994 964 Carrera range, including the C4, RS America, and Speedster, using the factory hangers with no cutting or welding.

Why replace the factory catalytic converter if it isn't broken?

Every 964's factory equipment is now over 30 years old, and its internal flow restriction only increases as the core ages, dulling both power and the air-cooled flat-six's exhaust note. The High Flow Sport Cat restores flow while keeping the car fully catalyzed and street legal.

Will installing a high-flow sport cat trigger a check engine light?

No, guaranteed. A high-flow catalytic converter changes the exhaust flow pattern, and a poorly engineered one can throw a false P0420 code because the oxygen sensors read differently than the ECU expects; Fabspeed's core is designed to stay within the factory-expected sensor range, so no catalyst-related code is triggered.

How difficult is the Fabspeed High Flow Sport Cat to install?

It's a simple, Level-1 DIY bolt-on installation. No cutting or welding is required, and it installs using the factory mounting points.

What is the Fabspeed High Flow Sport Cat made from?

It's built from T304L CNC mandrel-bent stainless steel in 14-16 gauge, with a high-flow catalytic core rated at up to 90-93% of straight-pipe flow.

Is the Fabspeed High Flow Sport Cat backed by a warranty?

Yes. It's backed by the Fabspeed lifetime warranty covering materials and workmanship.

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Description

Fabspeed High Flow Sport Cat for 964 Porsche 911 Carrera / 4 / RS America / Speedster

Fabspeed’s High Flow Sport Cat for 964 Porsche 911 Carrera restores the exhaust note the air-cooled flat-six was born with, without the drone that makes some aftermarket systems tiresome to live with day to day. Every 964’s factory equipment is now over thirty years old, and the restriction it adds only grows as the core ages. This upgrade is a direct bolt-on replacement for that factory equipment, built to the 964’s original hangers so fitment is exact, and it features a high-flow catalytic converter rather than an open pipe, so the car breathes easier through the midrange without giving up the emissions compliance a numbers-matching 911 owner cares about.

Features

Direct bolt-on replacement for factory equipment now more than 30 years old on every 964
A clean, emissions-compliant solution if your OEM catalytic converter is missing, damaged, or broken
No catalyst-related check engine light, guaranteed
Simple DIY bolt-on installation, no cutting or welding required
Backed by the Fabspeed lifetime warranty

Specifications

Cell Technology: 300-cell high-flow catalytic converter
Flow Rating: up to 90-93% of straight-pipe flow
Material: T304L CNC mandrel-bent stainless steel, 14-16 gauge
Dyno Curve Gain: +24whp / +16ft-lbs
Dyno Peak Gain: +20whp / +13ft-lbs

Applications

Porsche 911 Carrera: 964 | 1989-1994 | 3.6L F6
Porsche 911 Carrera 4: 964 | 1988-1994 | 3.6L F6
Porsche 911 Carrera RS America: 964 | 1993-1994 | 3.6L F6
Porsche 911 Carrera Speedster: 964 | 1989-1994 | 3.6L F6

Notes

All Fabspeed products are expected to ship within one week of order, though timelines are often much quicker

Frequently Asked Questions

Will the Fabspeed High Flow Sport Cat fit my 964 Carrera, Carrera 4, RS America, or Speedster? Yes. It’s a direct bolt-on fit for the full 1988-1994 964 Carrera range, including the C4, RS America, and Speedster, using the factory hangers with no cutting or welding.
Why replace the factory catalytic converter if it isn’t broken? Every 964’s factory equipment is now over 30 years old, and its internal flow restriction only increases as the core ages, dulling both power and the air-cooled flat-six’s exhaust note. The High Flow Sport Cat restores flow while keeping the car fully catalyzed and street legal.
Will installing a high-flow sport cat trigger a check engine light? No, guaranteed. A high-flow catalytic converter changes the exhaust flow pattern, and a poorly engineered one can throw a false P0420 code because the oxygen sensors read differently than the ECU expects; Fabspeed’s core is designed to stay within the factory-expected sensor range, so no catalyst-related code is triggered.
How difficult is the Fabspeed High Flow Sport Cat to install? It’s a simple, Level-1 DIY bolt-on installation. No cutting or welding is required, and it installs using the factory mounting points.
What is the Fabspeed High Flow Sport Cat made from? It’s built from T304L CNC mandrel-bent stainless steel in 14-16 gauge, with a high-flow catalytic core rated at up to 90-93% of straight-pipe flow.
Is the Fabspeed High Flow Sport Cat backed by a warranty? Yes. It’s backed by the Fabspeed lifetime warranty covering materials and workmanship.

About Fabspeed

Fabspeed Motorsport is based in Fort Washington, Pennsylvania. Their 26,000 sq. ft. facility serves as a hub for car clubs including the Porsche Club of America, Ferrari, McLaren, Lamborghini, and more. Fabspeed handles every step of product development in house, from design and engineering to dyno testing, street trials, and racing assessments, ensuring the quality and performance of every part. Fabspeed also collaborates closely with race engine builders and tuners from Italy, Germany, and the United States to create its Ultimate Performance line. To meet the standards of a demanding global audience, Fabspeed builds its systems from aerospace-grade austenitic stainless steel, titanium, and carbon fiber.

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 High Flow Sport Cat for 964 Porsche 911 Carrera [FS.POR.964.SC]

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Fabspeed High Flow Sport Cat for 964 Porsche 911 Carrera / 4 / RS America / Speedster

Features

Specifications

Applications

Notes

Frequently Asked Questions

About Fabspeed

Reviews