Will the Fabspeed Maxflo Performance Exhaust fit my Porsche 911 Carrera 3.0 or 3.2?

Yes. The Fabspeed Maxflo Performance Exhaust fits all 1976-1989 Porsche 911 Carrera models, covering the 1976-1983 3.0L cars and the 1984-1989 3.2L cars. It replaces the factory muffler on the existing mounting points with no cutting or welding, and the only fitment caveat is bumper clearance on the dual outlet version.

How loud is the Maxflo compared to the Supercup or the Muffler Bypass?

Considerably quieter than both. The Maxflo runs real mufflers with ceramic fiber and stainless wool packing, so it deepens the flat-six rather than uncorking it. The Supercup is a resonated muffler bypass and the Muffler Bypass Pipe is straight through, and Fabspeed lists both for track use. The Maxflo is the one built for daily driving.

Should I choose the single or dual outlet?

Choose single if you want the system to disappear visually and install with no bodywork at all. Choose dual for the wider stance at the rear valance and the more symmetrical look, accepting that the second tip requires slight modification to the factory bumper. Sound between the two configurations is close; the difference is mostly appearance and installation.

Does the dual outlet really require modifying the bumper?

Yes. Fabspeed states that slight modification to the factory rear bumper is needed for proper fitment of the second tip outlet. It is a trim to clear the tip, not structural work, but it is permanent on that bumper. Owners keeping a numbers-matching car original usually take the single outlet for this reason.

How much power does it add?

Fabspeed recorded 4 whp and 4 ft-lbs of torque in their own testing, along with improved throttle response. The Maxflo is a street system, so the gains are modest by design; the work is going into sound quality and flow rather than peak numbers. Owners wanting more should look at the Sport Cat and header side of the system.

How hard is the install, and what is it made from?

It is a Level-1 bolt-on, simple DIY with no cutting or welding, and most owners finish in an afternoon on a lift or stands. Construction is complete T304L stainless on 14 to 16 gauge CNC mandrel-bent 2.25 inch tubing, finished with a Deluxe 4.5 inch oval tip. The Fabspeed lifetime warranty applies.

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Description

Fabspeed Maxflo Performance Exhaust System for Porsche 911 Carrera

The Fabspeed Maxflo Performance Exhaust for Porsche 911 Carrera is built for the owner who wants the air-cooled flat-six to sound like itself on every drive, not only on the days they are willing to explain it to the neighbors. Fabspeed designs, engineers, dyno tests and race proves its own work from its Fort Washington, Pennsylvania facility, and the Maxflo is where that discipline goes into restraint rather than volume: hydro-formed muffler cases, pulse TIG welds, and packing of 2000 degree ceramic fiber and stainless steel wool, all on complete T304L stainless. The result is deeper and throatier than stock with 4 whp and 4 ft-lbs behind it, loud enough to reward a downshift and civil enough to hold a conversation at a cruise. Choose a single or dual outlet, both finished with a Deluxe 4.5 inch oval tip.

Features

Deeper, throatier sports car sound across the rev range, voiced for street driving rather than track volume
Improved throttle response
Radius stress relieved, hydro-formed muffler cases, pulse TIG welded
Available in single or dual outlet configuration
Simple DIY bolt-on installation, no cutting or welding required
Level-1 install difficulty
Backed by the Fabspeed lifetime warranty

Specifications

Material: complete T304L stainless steel
Tubing: 14-16 gauge, CNC mandrel bent, 2.25″
Muffler packing: 2000 degree ceramic fiber and stainless steel wool
Tip: Deluxe 4.5″ oval style
Horsepower gain: 4 whp
Torque gain: 4 ft-lbs
Outlet: single or dual

Applications

Porsche 911 Carrera: 1976-1983 | 3.0L H6
Porsche 911 Carrera: 1984-1989 | 3.2L H6

Notes

The dual outlet configuration requires slight modification to the factory rear bumper for proper fitment of the second tip outlet. The single outlet configuration needs no bumper work.
This is the quietest of the three Fabspeed systems for this chassis; the Fabspeed Supercup Exhaust System and the straight Fabspeed Muffler Bypass Pipe (FS.POR.911.MB) both sit well above it on volume
Pairs with the Fabspeed Sport Cat for Porsche 911 Carrera 3.0 & 3.2 (FS.POR.911.SC) for a matched high-flow path front to back
The dual outlet Maxflo is also the exhaust inside the Fabspeed Sport Performance Package for Porsche 911 Carrera 3.2 and the Fabspeed Sport Performance Package for Porsche 911 Carrera 3.0, which bundle it with a BMC F1 filter, a CUP airbox cover and an optional DME chip
All Fabspeed products are expected to ship within one week of order, though timelines are often much quicker

Frequently Asked Questions

Will the Fabspeed Maxflo Performance Exhaust fit my Porsche 911 Carrera 3.0 or 3.2? Yes. The Fabspeed Maxflo Performance Exhaust fits all 1976-1989 Porsche 911 Carrera models, covering the 1976-1983 3.0L cars and the 1984-1989 3.2L cars. It replaces the factory muffler on the existing mounting points with no cutting or welding, and the only fitment caveat is bumper clearance on the dual outlet version.
How loud is the Maxflo compared to the Supercup or the Muffler Bypass? Considerably quieter than both. The Maxflo runs real mufflers with ceramic fiber and stainless wool packing, so it deepens the flat-six rather than uncorking it. The Supercup is a resonated muffler bypass and the Muffler Bypass Pipe is straight through, and Fabspeed lists both for track use. The Maxflo is the one built for daily driving.
Should I choose the single or dual outlet? Choose single if you want the system to disappear visually and install with no bodywork at all. Choose dual for the wider stance at the rear valance and the more symmetrical look, accepting that the second tip requires slight modification to the factory bumper. Sound between the two configurations is close; the difference is mostly appearance and installation.
Does the dual outlet really require modifying the bumper? Yes. Fabspeed states that slight modification to the factory rear bumper is needed for proper fitment of the second tip outlet. It is a trim to clear the tip, not structural work, but it is permanent on that bumper. Owners keeping a numbers-matching car original usually take the single outlet for this reason.
How much power does it add? Fabspeed recorded 4 whp and 4 ft-lbs of torque in their own testing, along with improved throttle response. The Maxflo is a street system, so the gains are modest by design; the work is going into sound quality and flow rather than peak numbers. Owners wanting more should look at the Sport Cat and header side of the system.
How hard is the install, and what is it made from? It is a Level-1 bolt-on, simple DIY with no cutting or welding, and most owners finish in an afternoon on a lift or stands. Construction is complete T304L stainless on 14 to 16 gauge CNC mandrel-bent 2.25 inch tubing, finished with a Deluxe 4.5 inch oval tip. The Fabspeed lifetime warranty applies.

About Fabspeed

Fabspeed Motorsport works out of a 26,000 square foot facility in Fort Washington, Pennsylvania, where design, engineering, dyno testing, street testing and race development all happen under one roof. The shop is a fixture for the Porsche Club of America, Ferrari, McLaren and Lamborghini crowds, and collaborates with race engine builders and tuners in Italy, Germany and the United States. Systems are fabricated from aerospace-grade austenitic stainless steel, titanium and carbon fiber, and every Fabspeed performance product is backed by the Fabspeed lifetime warranty.

Additional Information

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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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