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Discussion Starter #1 (Edited)
Fabspeed Motorsport
McLaren MP4-12C High-Performance Exhaust Systems


Fabspeed Motorsport is the World Leader in high performance exhaust systems for exotics, supercars, and hyper-cars. Fabspeed Motorsport was the world’s first company to develop a super high-performance exhaust system over a 15 months ago for the McLaren MP4-12C cars. Since then Fabspeed Motorsport has continually developed and refined the Fabspeed Maxflo Sport/Racing Catalytic Converters and Supersport X pipe Exhaust with stock style oval exhaust tips. Fabspeed also designed very cool deluxe Quad Tips for these wonderful cars. Fabspeed Motorsport USA has more long-term experience with these McLaren Twin Turbo Coupes and Spiders than any other tuning company in the world. No other company in the worldhas the depth of experience and development of X pipes as does Fabspeed Motorsport USA.

After the McLaren Heritage Orange coupe was fully baseline tested and disassembled, it was discovered that the McLaren OEM catalytic converters were very short in length. These factory cats were extremely short so that exhaust gas could pass through efficiently and quickly to maximize power. In addition, McLaren engineering in the United Kingdom placed the oxygen sensor port locations in very close tolerance to these proprietary catalytic converters because the McLaren heat shields must cover these extremely short catalytic converters, oxygen sensor bungs/ports and all 3.0” 76mm tubes for maximum exhaust efficiency and to minimize radiant heat.

Essentially, McLaren has a clamshell heat shield that wraps around all the catalytic converter pipes and is fastened to the OEM catalytic converters. Fabspeed worked with Solidworks engineers to model the flow of the stock OEM exhaust, model the $6300 optional McLaren “sport exhaust” and the refined Fabspeed Motorsport systems throughout all MP4-12C development.

Above: Solidworks flow analysis of the stock MP4-12C exhaust system.

Fabspeed Motorsport logically and initially designed these systems to utilize a 200-cell sport/racing catalytic converter that we had previously used on our super-high horsepower, world famous Porsche 997 Twin Turbo sport exhaust systems. The logical hypothesis and assumption, in conjunction with off-the-shelf thinking, was that these large round long HJS 997.2 Twin Turbo catalytic converters could support 800HP, so therefore they would support the 650-800+ horsepower of the 3.8L McLaren Twin Turbo engine.

Fabspeed’s engineers were able to make this cat fit and work with a lot of tedious work, but the super-long 997 Twin Turbo catalytic converters did not fit properly and there were too many complications and outright negative compromises that limited the performance and durability. In other words, the 997TT catalytic converter and other off-the-shelf HJS catalytic converters that Fabspeed Motorsport utilizes for other supercars were much too long and too big to fit correctly, and Fabspeed had to bastardize the catalytic converter and compromise the symmetry of the inlet and outlet pipes to make the 997.2 Twin Turbo catalytic converters and other off-the-shelf HJS catalytic converters fit. Fabspeed Motorsport USA and HJS Germany mutually decided that forcing or manipulating a 997TT catalytic converter that is over 32% longer than a stock McLaren primary catalytic converter to fit was the WRONG solution for the McLaren Twin Turbo, which must meet Euro Level 5 emissions.

Faced with this unique challenge, Fabspeed Motorsport called HJS headquarters in Germany and discussed the parameters and the issues that had become apparent. Joe Fabiani, the president of Fabspeed, spoke with Klaus Osterhaus and HJS racing engineers and then Joe Fabiani paid for the tooling, engineering, and development of an ultra-high-flowing 300-cell HJS catalytic converter specifically for the McLaren MP4-12C cars. Fabspeed Motorsport is HJS Germany’s largest volume customer in North America and South America, and HJS provide this super high-flow short 300CPSI catalytic converter – as an exclusive – to Fabspeed Motorsport. These Fabspeed Motorsport HJS MP4-12C specifically designed and engineered cats match up perfectly to any stock or aftermarket McLaren rear muffler system.


Fabspeed Motorsport’s compact 300CPSI tri-metallic OBD2 EURO Level 5+ certified proprietary catalytic converters fit precisely, and as expected given their short length, significantly outperform the 32% longer and incorrectly-fitting 200-cell 997TT cats in back-to-back testing. From exhaust flow to power gains and 300CPSI cats also have a 50% more precious metal coating and stronger core structure so the Fabspeed McLaren cats are better under any and all engineering based criteria.

This is logical, given that Fabspeed Motorsport USA took a blank sheet of paper and partnered with HJS Germany to develop, at great expense, a dedicated and bespoke catalytic converter for the wonderful new-at-the-time McLaren MP4-12C cars. The Fabspeed Motorsport bespoke McLaren catalytic converters are HD directional, 50% stronger than 200 cell HJS 997TT catalytic converters. The Fabspeed 300-cell McLaren catalytic converters also cost significantly more in terms of custom-tooling and precious metal wash coating/loading materials than did the standard off-the-shelf Porsche 997TT catalytic converters. After more than 20,000 combined miles and over 60 systems installed, not one CEL light or failure has been reported on Fabspeed ultra flow McLaren catalytic converters.


This in-depth research, development, engineering, and testing led Fabspeed Motorsport to market their new system with the specifically-designed 300-cell cats, instead of the 200-cell versions that are in use by their competitors’ systems. Fabspeed was the first company to design and use 200-cell HJS cats, but quickly realized that 200-cell cats were a weak unacceptable compromise for deployment on the McLarens.

As clearly mentioned above, the bottom line for Fabspeed Motorsport USA and HJS Germany is that the extremely long 200-cell cats were not suited for many qualitative and quantitative reasons. The final conclusion was that given the MP4-12C’s exhaust geometry and flow pattern, that the Fabspeed-exclusive 300-cell HJS HD Level-5+ cats were – and are – the premiere performance option for these cars.


  • • Fabspeed Motorsport was the first tuner in the world to design and dyno-develop proven high-performance exhaust systems for the McLaren MP4-12C Coupe and Spyder cars
  • • Fabspeed has over 14 months of street, track, dyno, and empirical testing on the McLaren MP4-12C platform.
  • • Fabspeed Motorsport’s systems have logged over 20,000 miles of proven durability.
  • • Fabspeed’s McLaren systems utilize exclusive proprietary HJS Tri-Metallic OBDII European Level-5 Ultra-Highflow Catalytic Converters (specifically designed by HJS for Fabspeed Motorsport). No other company has these cats for the McLaren cars.
  • • Fabspeed’s systems were designed and modeled in CAD and testing was performed using finite element analysis and flow analysis, completed with SolidWorks (a unit of Dassault Systems in France).
  • • Fabspeed Motorsport USA is the North and South America's largest importer of German HJS Catalytic Converters and number-two in the world for developing high-performance exotic and supercar exhaust applications using HJS Sport Cats.
Fabspeed Motorsports USA designed the ultimate McLaren stainless steel exhaust systems and components using passion and engineering that can not be copied!
 

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Discussion Starter #4 (Edited)
Just letting everyone know, we are doing holiday specials for the end of the year! We also have a full suite of ECU tuning available to ship immediately.

* as a reminder, Fabspeed utilizes 300cel HJS tri-metallic sport cats designed EXCLUSIVELY for us, for the Mclaren cars. We did not choose this cat because it was EASIER to manufacture like the competition is claiming, we use it because its keeps the CEL off while producing more HP and TQ in a more compact package which lets us use smoother radius bends, leading to more HP and TQ.
 

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This is Joe Fabiani the President of Fabspeed Motorsports USA- Happy New Year to everyone!

The Fabspeed Motorsport proprietary 300 cell tri-metallic HJS German sports racing catalytic converter makes the most reliable power, and sports car sound increase on any and all McLaren Mp4-12C Coupes and Spider than any other aftermarket quality catalytic converter.

Fabspeed Motorsport designed these ultra short and ultra highflow catalytic converters approximately 2 years ago after attempting and using very long 997.2Twin Turbo HJS catalytic converters.


I want to restate that:
Certain local and other California companies are bragging and misleading McLaren enthusiasts by "stating emphatically that 200 cell long HJS catalytic converters are the best catalytic converters for the MP4-12C cars.

Fabspeed's competitors go on and on in various essays that their teams did a superlative job and showed exemplary craftsmanship and innovation and made a worlds
1st break through in engineering and fitting long HJS 200 Cell Porsche 997.2TT catalytic converters to McLaren MP4-12C sports racing catalytic converter replacement pipes.

These marketing essays are complete nonsense, misleading and fabricated out of desperation.

1) Fabspeed engineered the 1st 200 cell sports cats for the McLaren cars about 2 years ago..........not last summer or several months ago like other companies have done. Therefore- Fabspeed could have OFFERED 200 cell catalytic converters for sale to McLaren owners and dealers from inception .

2) Fabspeed designed with HJS Germany ultra short super high flow 300 cell tri-metallic race catalytic converters that OUTFLOW the HJS 200 cell Porsche 997.2 Twin Turbo catalytic converters that our competition offers.

3) The Fabspeed McLaren catalytic converters are 33% shorter for better flow and 50% more durable/stronger as mentioned by HJS Germany the OEM German supplier. Therefore- ANY and ALL McLaren Mp4-12C makes SIGNIFICANTLY more power and sports car sound with the Fabspeed 300 CPSI sports race cats versus the TOO Long Porsche Twin Turbo 200 cell catalytic converters.

Bottom-line : Fabspeed Motorsport engineered and perfected these McLaren sports race catalytic converters with the OEM German supplier close to 2 years ago.

Since our competitors CAN NOT purchase these catalytic converters unless they want to buy them from Fabspeed ................... they are forced to make major compromises and use long restrictive 200 cell catalytic converters and then write a misleading dissertation and thesis " exclaiming ground breaking, innovation and merits of the wrong too big catalytic converter" for the McLaren."

Fabspeed also was the 1st company in the world to design and perfect Mclaren sports racing catalytic converters and catbypass pipes straight pipes and we also designed the Maxflo rear X pipes that was shamelessly copied as well.

To date Fabspeed Motorsports has shipped over 65+ systems to McLaren enthusiast worldwide and continues to innovate and build the very best systems for Exotic cars. Please contact our staff for a personal tour of our 26,000sqft engineering, design, testing and manufacturing facility!
 

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i went to your website and saw you have full cat bypass pipes. will the 02 extenders work with that and not cause a CEL? what would be the sound with cat bypass pipes and the MCL sport exhaust?

thanks.
 

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i went to your website and saw you have full cat bypass pipes. will the 02 extenders work with that and not cause a CEL? what would be the sound with cat bypass pipes and the MCL sport exhaust?

thanks.
If you replace all 4 cats with straight pipes, you will have a CEL. You will have to do an ECU tune if you want it fixed.
 

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GMG who did my car is NOT a sponser here so they can't rebutt Fabspeed .

Let me just say this I had the Fabspeed cats on my car ...took them off and
sold them then went with The GMG system. I don't have anything bad to say about Fabspeed
products. Just let me say I much prefer what I have now...end of discussion.
 

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I'm extremely happy with the Fabspeed exhaust, would love it to be made out of titanium and CF quad tips like on the Akrapovic and a tad bit louder. I did have a issue with the Fabspeed system but they stood behind their product and the problem was resolved no questions asked. Cheers.....??
 

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Discussion Starter #10
i went to your website and saw you have full cat bypass pipes. will the 02 extenders work with that and not cause a CEL? what would be the sound with cat bypass pipes and the MCL sport exhaust?

thanks.

If you replace all 4 cats with straight pipes, you will have a CEL. You will have to do an ECU tune if you want it fixed.

we have had success with the O2 spacers keeping CEL's off. There is no guarantee of course though
 

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The McLaren cars with NO catalytic converters or straight pipes off the turbo make even more power and truly evil sports car sound. The McLaren can really breathe and exhale even more.............the driver will hear even more exotic sports car sound with whistling and the weed whacking noises of a completely open exhaust on a Twin Turbocharged sports car.

The car is not too loud and is daily driveable. Yes you will get a check engine light, CEL light, with no catalytic converters. We have O2 spacers or simulators that may keep the CEL light off. FYI- the car runs great with the cats off and at Sears you can buy a OBD2 code scanner clearing unit for under $100 and cancel codes at will if you are interested and a Racer.

Very shortly Fabspeed Motorsports will have an incredible Proprietary European Tuning ECU solution for all the latest Mclaren MP4-12C cars that along with our Maxflo ultra flow HJS catalytic converters with allow the car to safely make an additional 120HP to approximately + 150HP with our freeflow exhaust systems.
 

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The McLaren cars with NO catalytic converters or straight pipes off the turbo make even more power and truly evil sports car sound. The McLaren can really breathe and exhale even more.............the driver will hear even more exotic sports car sound with whistling and the weed whacking noises of a completely open exhaust on a Twin Turbocharged sports car.

The car is not too loud and is daily driveable. Yes you will get a check engine light, CEL light, with no catalytic converters. We have O2 spacers or simulators that may keep the CEL light off. FYI- the car runs great with the cats off and at Sears you can buy a OBD2 code scanner clearing unit for under $100 and cancel codes at will if you are interested and a Racer.

Very shortly Fabspeed Motorsports will have an incredible Proprietary European Tuning ECU solution for all the latest Mclaren MP4-12C cars that along with our Maxflo ultra flow HJS catalytic converters with allow the car to safely make an additional 120HP to approximately + 150HP with our freeflow exhaust systems.

When this happens, let me know and I'll send you mine...
 

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Discussion Starter #14
Happy New Year!

Treat yourself this 2017 and replace the restrictive factory cats with high-performance HJS Racing sport cats for maximum performance and sound; specifically designed for the MP4-12C by HJS Germany. No check engine light!



Our Sport Cats for the McLaren MP4-12C improve power by and impressive +28 whp and 29 ft-lbs of torque to the wheels.




For any questions or if you need anything else, contact me today!
 

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Discussion Starter #15
We just had another MP4-12C Performance Package leave our facility. Our customer left and came right back with a giant smile on his face, bragging how much fun the car is now. Check his beautiful Volcano Red 12C and a shot of the engine bay below!



 

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Discussion Starter #18
Celebrate the changing of the seasons with Fabspeed! Enjoy 10% OFF all products from now through October 31st.

Take advantage of our exceptionally low lead
times - normally four weeks - now only one week!

PM me for info or pricing!
 

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Discussion Starter #20
This is the Black Friday sale you’ve been waiting for! Up to 20% off starts NOW!



Runs until the end of the month
20% off of all tips
15% off of all exhaust products
10% off of intakes, tuning, carbon and EVERYTHING else!
 
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