MAD BMW S58 Catted Downpipes M3 M4 G80 G82 G83 W/ No CEL Guarantee & Flex Section
- Description
- Fitment
- Refund Policy
Introducing the MAD S58 Catted Downpipe
The perfect upgrade for BMW enthusiasts looking to unlock more performance and a deeper, more aggressive exhaust note without triggering a check engine light.
Crafted from high-quality 304 stainless steel, this downpipe is built to handle extreme heat and harsh driving conditions. The smooth piping transitions are designed for maximum exhaust flow, delivering noticeable gains in horsepower, torque, and throttle response.
Equipped with 300 cell high-flow catalytic converters, the MAD S58 Catted Downpipe improves engine sound and overall drivability while keeping the check engine light off. It bolts directly to the factory exhaust system with no cutting or welding required, making installation quick and hassle-free. It’s also fully compatible with most aftermarket exhaust systems, giving you the freedom to customize your build.
No CEL guarantee
If you get a check engine light related to the catalytic converter, MAD will replace the downpipe for free.
Don’t settle for stock performance. Upgrade to the MAD S58 300 Cell Race Catted Downpipes and experience the full potential of your BMW.
Race use only
Features
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300 CEL catalytic converters
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No check engine light guarantee
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Compatible with right-hand drive and left-hand drive vehicles
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Smooth bends for maximum airflow without drone
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Up to 30HP increase on stock turbos, even more with upgraded setups
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Lifetime warranty on defects and fitment
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90-day return period
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Ships in 1 to 2 business days
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Spot-on fitment
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Flex section for added durability
Fitment
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2021 and up BMW M3 G80
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2021 and up BMW M4 G82 and G83
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2023 and up BMW M2 G87
Disclaimer
For race use only. This product is not certified for use on public roads and may not comply with local regulations. Always check your local laws before installing.
Returns
Our policy lasts 14 days. If 14 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange. All items are subject to 15% restocking fee from the manufacturer.
To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.
Additional non-returnable items:
Gift cards
Downloadable software products
To complete your return, we require a receipt or proof of purchase.
Please do not send your purchase back to the manufacturer.
There are certain situations where only partial refunds are granted (if applicable)
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping to you will be deducted from your refund. If your original order qualified for free shipping, the actual cost of shipping the item to you will still be deducted from your refund.
If you would like to start a return please click here
Refunds (if applicable)
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.
If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping to you will be deducted from your refund. If your original order qualified for free shipping, the actual cost of shipping the item to you will still be deducted from your refund.
Late or missing refunds (if applicable)
If you haven’t received a refund yet, first check your bank account again. Then contact your credit card company, it may take some time before your refund is officially posted. Next contact your bank. There is often some processing time before a refund is posted. If you’ve done all of this and you still have not received your refund yet, please contact us at info@amtuning.ca.
Sale items (if applicable)
Only regular priced items may be refunded, unfortunately sale items cannot be refunded.
Exchanges (if applicable)
To start an exchange, click here
Non-refundable items
The following items are non-refundable and non-returnable once purchased: oils, fuel or oil additives, filters, tuning cables, OBDeleven products, Braum seats, spark plugs, coil packs, and similar consumable, wheel spacers, wheels bolts, license plate brackets, electronic tuning components and any other product subject to discretion of AM Tuning Canada.
Other products from brands such as MHD, Bootmod3, Ecutek, Braum racing, Novitec are also non-refundable and non-returnable.
All sales of these items are final and are subject to the policies and discretion of AM Tuning. By completing a purchase, the customer acknowledges and agrees to these terms.
