SKU: 46416198359

Competition Series Catless Downpipes 2021+ M2/M3/M4 S58 Engine

$492.75 $547.50
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Description

Competition Series Catless Downpipes 2021+ M2/M3/M4 S58 EngineIntroducing our new Competition Series Catless Downpipes for your twin turbo S58 engine! Fits 2021+ M3 M4 (G80 82) and 2023+ M2 (G87). Key Features: Made in the USA! Manufactured in house. Available for the 2021+ BMW M3 M4 & 2023+ M2 S58 Engines! Higher Max Horsepower Power Curve Higher Initial Torque. Torque curve hits faster, higher and longer. Better throttle response and faster turbo spool up times Mandrel Bent 3" piping. Smooth transition to the

Introducing our new Competition Series Catless Downpipes for your twin turbo S58 engine! Fits 2021+ M3/M4 (G80/82) and 2023+ M2 (G87).

Key Features:

  • Made in the USA!  Manufactured in house.
  • Available for the 2021+ BMW M3/M4 & 2023+ M2 S58 Engines!
  • Higher Max Horsepower Power Curve
  • Higher Initial Torque.  Torque curve hits faster, higher and longer.
  • Better throttle response and faster turbo spool up times
  • Mandrel Bent 3" piping.  Smooth transition to the exhaust system.
  • 100% Stainless Steel Construction
  • 100% TIG welded for better quality welds
  • Precision CNC machined turbocharger V-Band flange
  • Mirror polish or brush finish
  • Optional high temp Black Ceramic Thermal Coating.
  • Compatible with the factory or aftermarket exhaust systems
  • Track tested durability
  • Includes all hardware for complete installation
  • Limited Lifetime Warranty

Restrictions in the exhaust system robs horsepower and torque especially on turbocharged cars. Thus, removing as much exhaust flow restrictions will increase horsepower and torque significantly. The factory catalytic converter found in the factory downpipe is a big culprit of this and is a major exhaust flow restriction. The factory catalytic converter is made up of catalyst material formed into "honeycomb" weaves. Exhaust gas must pass through these tiny "honeycomb" weaves on their way to the exhaust system thus causing a major exhaust flow restriction. It also causes turbulence after the catalytic converter which causes the exhaust flow to slow down (which increases restriction). By replacing the factory downpipe/catalytic converter with our Competition Series Catless Downpipe, more power is unleashed! You will feel the difference instantly. 

Our Competition Series Catless Downpipes is constructed out of 100% 304 grade stainless steel and utilize mandrel bent piping. They are 100% TIG welded by our in house fabricators and built in the USA. The factory turbocharger turbine housing utilizes a 3.5" V-Band flange which we have duplicated and CNC machined cut out of billet 304 stainless steel. Stainless Steel CNC machined O2 sensor and laser cut brackets are TIG welded using stainless steel rods. The O2 sensor is positioned at the factory location. The factory donut flange design is retained.  100% bolt on.

Our downpipes are designed to fit perfectly with either the factory exhaust system or your aftermarket exhaust system. There are no compatibility issues whatsoever. The downpipes will come by default with brushed finish.

OPTIONS

Ceramic Thermal Coating - The purpose of ceramic coating downpipes is to keep heat from the exhaust gases inside the downpipe from radiating out. This keeps underhood temperatures lower and less heat absorption by nearby parts/surfaces.  Another added benefit is that by keeping in heat (energy) in the exhaust gases inside the downpipe, exhaust flow velocities stay up, resulting in lower backpressure. The ceramic coating also adds additional corrosion resistance. We utilize the best ceramic coating possible. Our thermal coating can resist up to 2000F of heat. It is available in black only (all the other colors cannot withstand the high levels of heat).

CAUTION: This product is intended for OFF ROAD COMPETITION USE ONLY. Not legal for use on pollution controlled vehicles upon public road/highways. THIS PRODUCT IS FOR SALE FOR ALL 49 STATES EXCLUDING CALIFORNIA.  In addition to vehicle use verification, a Vehicle Compliance Waiver needs to be signed.

THIS ITEM IS NOT FOR SALE, INSTALLATION, OR USE ON LICENSED VEHILES IN THE STATE OF CALIFORNIA. 

The item is for sale for international customers without restriction.

Please contact us at [email protected] or call us at (626) 334-6609

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 46416198359

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4.3 ★★★★★
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Kelson Vibber
Boise, US
★★★★★ 5
A fun, accessible introduction to how AI works...and how it sometimes doesn't!
Format: Hardcover
Still relevant despite recent advances in AI-generated imagery and text, because the new systems still work on the same principles as the ones that were around three years ago. They just have a lot more data and processing power. This also means they have the same limitations and blind spots. What was it trained on? *How* was it trained? (This is the most obvious way human bias can leak into an AI model.) How well is the goal specified? And of course, did the AI actually latch onto relevant details, or did it notice that all the training pictures labeled sheep had green fields and blue skies, and completely ignore the actual sheep? These are things to keep in mind as we enter the landscape of generative AI tools like ChatGPT: You can train an LLM to write a book review, and it'll give you a great piece of text that *reads* like a book review -- but it's not going to have actually evaluated the book. For that, you'd have to train *another* AI to categorize books as good, bad, interesting, dull, and so on. But even that can only be as good as its training data. (I don't remember whether the classic phrase "garbage in, garbage out" is used anywhere in the book, but it still applies today!)
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 1, 2023
T
Verified Purchase
Tero
Birmingham, US
★★★★★ 4
If you want a book on the details of AI without math and statistics, this is it
Format: Paperback
I had this book a year or two back and then sold a lot of books as they piled up. After that I read a good number of books on AI. Of those, Ethan Mollick's book Co-Intelligence is best for the user end. But then there was still the issue of how do they do it? If you want to understand the process how AI works, there are a few books like this. Melanie Mitchell tends to focus on pictures. When you read ANY of these book, you will come to a page where you think "this makes no sense." You get there because the way AI chops up information and stores it in "cells" and then processes in stages (deep learining, hidden layers) is not how we think. They are not brains, though the neural network has some similarity to ours. You will simply need to finish the book. This one or the one you bought. Then read another one, if needed. It will make a lot of sense if you finish the book. Then you just generalize where you are at. I am never going to write Python or get deeply involved in tha manner. I am quite familiar with the free vesrions and I am able to check what summaries I get from AI. I will also keep up with the language part of it. AI does not study grammar the way we do. It looks for patterns in millions of examples. I have since 2023 gone through most of the 20 dollar range books. This one is the best.
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Reviewed in the United States on April 1, 2026
E
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Erica V. Matos
Battle Creek, US
★★★★★ 5
Great, funny intro to AI
Format: Hardcover
This is a wonderful, humorous introduction to AI that is a fast read packed full of examples. It makes a great gift for friends or family who don’t know much about the field, and I imagine it would be especially interesting to teens. I loved the way she used running jokes to make connections between themes. Shane is clearly on a mission to make AI more accessible. It’s funny, someone else said they didn’t like this book because it wasn’t enough like Shane’s tear-inducingly-hilarious blog. But here’s the thing: I can read the blog for free! I was actually nervous that I was going to be getting a repeat of the blog in book form, but it was super different. If you’re a computer science scholar, maybe skip this one, but I don’t think that was the audience Shane was trying to reach.
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Reviewed in the United States on November 19, 2019
M
Verified Purchase
mechanicality
Port Orchard, US
★★★★★ 3
Humorous intro-level book to AI
Format: Hardcover
If you are new to the field of AI, this is a fun read. The author does a fine job breaking down complex topics into bite-size, entertaining sections. However, if you are not new to the field of AI, you'll probably find this book boring and will find more joy in visiting the author's popular website. Personally, I find this book forgettable and not living up to the hype.
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Reviewed in the United States on April 1, 2020
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Patricia Kitice
Massapequa, US
★★★★★ 5
Captivating storytelling and educational material
Format: Paperback
My ten years old boy loved WW2 in Europe: Great Battles for Boys. He likes to read about war and it his third book from Joe Giorello. It is an engaging and easy-to-understand account of significant World War II moments designed for young boys. It has pictures and maps so they can have a better understanding about the War and through captivating storytelling and educational material, it provides a valuable introduction to this crucial era, promoting a greater comprehension and respect for the experiences and achievements of individuals during that time.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 17, 2024

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