Valvetronic Designs - Valved Race Exhaust System for Porsche 911 Turbo 991.1 / 991.2
- Description
- Fitment
- Refund Policy
Porsche 991 Turbo / Turbo S – Titanium Valved Exhaust System
Grade 5 Titanium • Center X-Pipe • True Motorsport Tone
Overview
The 991 Turbo is the benchmark for all-around performance—but like every turbocharged Porsche, the stock soundtrack falls short. Valvetronic Designs fixes that at the source. Our system starts with CAD-designed, CFD-tested exhaust manifolds to sharpen pulse timing and raise pitch for a cleaner, more motorsport-inspired note. Downstream, a valved titanium rear section delivers dual personalities on demand—raw and unfiltered when you want it, refined and comfortable when you need it.
Sound Dynamics
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Valves Open: After the turbos, gases travel straight ~13 inches to atmosphere for an uncorrupted, razor-edged Porsche wail—crisp up top with aggressive shift pops.
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Valves Closed: Flow is routed through two quad-chambered mufflers for a substantial drop in volume and a calm cabin demeanor.
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Center X-Pipe: Smooths pulse interaction, kills drone, and adds a polished, high-frequency character throughout the rev range.
Performance & Engineering
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CFD-Validated Manifolds: Optimized runner geometry improves pulse energy, response, and tone.
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Grade 5 Titanium Construction: Extreme strength-to-weight with superior heat resistance.
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Vacuum-Actuated Valves: Instant, reliable control of volume and character.
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Precision TIG Welds: Hand-finished for durability and a showpiece finish.
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Weight Savings: 9.5 lb lighter than the factory system.
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100% Reversible: Bolt-on design—return to stock anytime.
Visual Details
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Signature Tips: Premium finishes that complement the 991 Turbo’s rear profile.
Fitment
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2014–2019 Porsche 911 (991) Turbo
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2014–2019 Porsche 911 (991) Turbo S
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.
Labor Fees (if applicable)
AM Tuning Canada is not responsible for, and shall not be liable for, any labor fees, installation charges, removal charges, diagnostic fees, or other service-related costs incurred by the customer or any third party in connection with the installation, removal, modification, servicing, or use of any products purchased from AM Tuning Canada. Unless expressly agreed to in writing by AM Tuning Canada, all such labor and service costs are the sole responsibility of the customer.
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.
