ABOUT THE PRODUCT
Project Gamma downpipes for the BMW M3 and M4 (G80/G82) are available as a complete performance package that includes high-flow downpipes, FEMTO ECU unlock, and customer-preferred ECU tuning. This bundle is designed to deliver maximum airflow, power, and reliability while offering exceptional value compared to purchasing each component separately.
When paired with proper tuning, Project Gamma downpipes provide significant horsepower and torque gains, improved turbo response, and enhanced overall drivability — making this one of the most effective upgrades available for the G80/G82 platform.
Project Gamma G80/G82 Downpipes
Engineered specifically for the BMW M3/M4 (G80/G82), Project Gamma downpipes feature a 3.5-inch high-flow construction with a precision CNC-machined stainless steel v-band to pipe transition for optimal fitment and exhaust flow.
Unlike many competitors that reduce diameter near the turbo outlets, our downpipes maintain a true full 3D design all the way through the final inches, delivering superior airflow and performance. When tuned, gains of up to 50 horsepower and 60 lb-ft of torque can be achieved.
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Full 3.5” diameter design
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Handcrafted from 304 stainless steel
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Extreme rust and heat resistance
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Optimized for tuned and high-performance applications
FEMTO ECU Unlock & Tuning Information
This package includes a FEMTO ECU unlock, required for flashing aftermarket tunes on locked G80/G82 ECUs.
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FEMTO unlock processing time: approximately 2 weeks after we receive the customer’s ECU
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The customer must contact us before shipping the ECU to receive instructions and approval
Once unlocked, customers may select their preferred tuning platform:
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Bootmod3
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MHD
Both tuning options allow proper calibration for high-flow downpipes and optimized power delivery.
Important Notes
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ECU must be shipped to us for the FEMTO unlock process
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Customer must contact us prior to shipping the ECU
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Proper tuning is required to maximize performance and avoid drivetrain or CEL issues
When will my order ship?
If it’s in stock and the order is placed before 3pm, it ships the same day. If you ordered a product with ceramic coating, it will ship the following business day.
If the product or color spec you’re looking for is not in stock, you can join the waitlist by clicking the “email when available” button underneath the “out of stock” label. We will email you as soon as your product is available and give you an estimated back in stock time.
What if I submitted a custom order?
If you are making a custom order, email us to submit your request and we will give you an estimated delivery time based on the special manufacturing time.
What if my product arrives damaged, incorrect, or is missing parts?
If you received the incorrect product or color, missing parts, or the item is defective, email us a picture with your order number and you will receive a refund or exchange. Contact us at info@shopprojectgamma.comand we will work with you to make it right.
What if I’m not satisfied with the product?
If the product is unused and uninstalled, we can offer you a refund, exchange, or store credit. If the product was used or installed on your vehicle, we unfortunately cannot offer any refund, exchanges, or credit.
What if I installed my products and then I decide I don’t like them?
Unfortunately used or installed products will not qualify for a return or refund. If you have any questions or concerns you can email us at info@shopprojectgamma.com
A restocking fee of 20% of the original purchase price may be applied to returned products. This fee covers the costs associated with processing the return and restocking the item if applicable. Please refer to our policies page for more info regarding all exchanges and returns.
Have a question you don't see answered here? Email us at info@shopprojectgamma.com and we'll get back to you.
