IRL G8X MaxFlow Race 400- CEL Downpipes
The IRL MaxFlow 400 Cell High-Flow Downpipes are engineered for enthusiasts looking to maximize the performance of their S58-powered BMW while maintaining a refined exhaust tone. Featuring premium 400-cell high-flow metallic catalytic converters, these downpipes provide significantly improved exhaust flow over the factory units, helping reduce backpressure, improve turbocharger efficiency, and deliver noticeable gains in horsepower, torque, and throttle response.
The IRL MaxFlow design promotes smooth exhaust flow to minimize turbulence and optimize performance throughout the entire RPM range. The result is quicker turbo spool, enhanced throttle response, and a deeper, more refined exhaust note without the harshness commonly associated with lower-cell-count catalytic converters.
Manufactured from premium T304 stainless steel and precision TIG welded, every set is built for exceptional durability and long-term reliability. Designed using OEM mounting locations, these downpipes provide a direct bolt-on installation and are compatible with both the factory exhaust system and most aftermarket cat-back exhausts.
Features
- IRL MaxFlow high-flow design
- Premium 400-cell high-flow metallic catalytic converters
- T304 stainless steel construction
- Precision TIG welded for maximum strength and durability
- Increased horsepower and torque
- Improved turbo spool and throttle response
- Reduced exhaust backpressure
- Refined performance exhaust tone
- Direct bolt-on installation
- OEM-style fitment
- Compatible with OEM and most aftermarket exhaust systems
Vehicle Fitment
- BMW G87 M2 (S58)
- BMW G80 M3
- BMW G81 M3 Touring
- BMW G82 M4 Coupe
- BMW G83 M4 Convertible
Important Information: These 400-cell downpipes are not EPA certified and are intended for off-road and motorsport use only where permitted by law. While the 400-cell catalyst design significantly reduces the likelihood of a check engine light compared to lower-cell-count options, IRL does not offer a no check engine light (CEL) guarantee with these units. A CEL may still occur depending on vehicle software, fuel quality, driving conditions, and manufacturing tolerances. ECU tuning may be recommended to optimize performance and catalyst efficiency.
It is a violation of Federal and Illinois State laws to use this product in a manner inconsistent with it’s labeling. Our products are "Legal Only For Racing Vehicles Which May Never Be Used, Or Registered or Licensed For Use, Upon A Highway."
Ships within 1-2 business days.
100% Genuine Parts
Fitment Guaranteed
IRL G8X MaxFlow Race 400- CEL Downpipes
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
-
Fast Shipping
1-2 days processing
4-5 days delivery -
Secure payment
Fast, safe, and secure payments you can trust.
-
Customer Support
Count on our 24/7 support -
here whenever you need us! -
Contact Us
Leave us a message at: +17034100852 or email us at: sales@turbotechperformance.com
Premium Parts
Fitment Guaranteed
FAQs
Please read our FAQs page to find out more.
Are OEM products more expensive than aftermarket alternatives?
OEM products might have a higher upfront cost compared to aftermarket parts, but their superior quality and durability often make them a more cost-effective choice over time. Investing in OEM ensures you’re getting parts specifically designed for your vehicle, which can lead to better performance and longevity.
Can I purchase OEM parts online or do I need to visit a dealership?
You don’t need to visit a dealership to get OEM parts. You can conveniently purchase genuine OEM components from authorized distributors and reputable online retailers like Turbo Tech Performance. Our online store provides a wide selection of high-quality parts delivered straight to your door.
Are parts from brands like Mopar, ACDelco, and Motorcraft interchangeable between different vehicle brands?
No, parts from Mopar, ACDelco, and Motorcraft are typically designed for specific vehicle brands. It’s crucial to ensure compatibility with your vehicle’s make and model by checking part numbers and consulting with a knowledgeable expert.
Can I install OEM parts myself, or is it better to have a professional handle it?
While some OEM parts can be installed by DIY enthusiasts, the complexity of installation can vary. For the best results and to ensure proper fitment and performance, we recommend having a trained mechanic install the parts, especially if you’re unfamiliar with automotive repairs.
Do OEM parts come with a warranty?
Yes, many OEM auto parts come with a manufacturer’s warranty that covers defects or issues. Be sure to check the warranty details for each part at the time of purchase, and keep your receipt for any potential warranty claims.