

Why We Choose HJS Catalytic Converters:
HJS German imported catalytic converters are made from some of the highest grade materials you can find in a catalytic converter. This yields high performance gains and longevity so it wont deteriorate over time like lower grade catalytic converters. These catalytic converters flow up to 93-95% of a straight pipe in most applications. The benefit is that you get the "straight pipe sound" while still being able to provide enough emissions scrubbing to prevent a check engine light. If you'd like to learn more, watch our video about HJS catalytic converters.
Sport Catalytic Converter (STREET) - This product removes the OEM catalytic converters from the vehicle, and as such, is strictly intended for closed track events and off-road use only. This product contains a High-Flow Sport Catalytic Converter solely intended for track and race cars as it is NOT California Air Resources Board Certified and not EPA certified. You are hereby informed and warned to check your local, state, and federals laws before buying and installing these or any aftermarket parts to be sure whether usage is in violation. All installation-risk and use-risk is borne by the end-user and installer of these parts.
Purchase Disclaimer: Fabspeed Motorsport does not condone the use of emission defeat devices for any vehicles used on public streets or roadways. Fabspeed Motorsport will not tamper, remove, disable, or bypass emissions equipment on a motor vehicle in accordance with 40 CFR Section 86.1854.12(a)(3), Clean Air Act 40 CFR 1068.101(b). This includes software, known as tunes, that reprogram a motor vehicles electronic control module to alter engine performance and enable the removal of filters, catalysts, and other critical emissions controls.
We're currently working to get more reviews for this product. In the meantime, please take a look at our reviews from other platforms.
I have nothing but good stuff to day about working with Fabspeed. From start to finish which includes working with someone on message boards for my M235i, finishing the sale, the product finish, and the east of installation and and final look and sound with my sport cat and muffler delete system with some awesome carbon fiber tips.
i have their secondary cat by pass pipes and maxflow mufflers on my 958s. i also have their supersport exhaust on my 991. both sound amazing. i recently had a minor concern/problem and contacted them. john palo reached out to me the next day and sorted everything out. its been well over a year since i purchased and he took care of me no questions asked. johns customer service is top notch and i just wanted to write this review to thank him. great products and even better customer service, thanks fabspeed and john!
I purchased the Sport Headers for my Porsche 981 and it was worth every penny! They sound so much better than factory. I noticed improved throttle response and more pull when accelerating. Alec and Jason were my customer service contacts and they were friendly, knowledgeable, and helped me make the best decision for my car. Clean welds, superior craftsmanship, and no CEL. I will definitely be going with Fabspeed again when it comes time to upgrade the exhaust. No regrets and very pleased with my experience.
I had heard great things about Fabspeed from others in the industry but my expectations were definitely exceeded with this project. The team at Fabspeed went above and beyond when developing and building the exhaust system for our NSX. With the pictures and video commentary, they made us feel like we were a part of the action and that isn’t an easy to do when you are 800kms away and in another country. I know that there were many skilled hands that were involved with making this project come to life and I would like to extend our thanks to the entire team. Moreover, I’d like to take a minute to emphasize how much I appreciated having Alec quarterback this engagement. He was a key part in making this happen and was patient, professional, and extremely responsive at all hours of the day/night. The NSX was greatly missed while it was gone but it came back with a new set of lungs and the sound is much more fitting of a car in its class. We are already considering working with them on another project and I would highly recommend them.
Great support from Alec. Extremely knowledgeable, I asked a ton of questions and answered everyone patiently. Look forward to my new Porsche upgrade.