- Description
- Fitment
- Refund Policy
Designed to fit:
- 1999 - 2019 Porsche 911 (all models)
- 1999 - Present Porsche Cayman & Boxster (all models)
Note - sold individually, some vehicles require 2 caps. These only work with vacuum actuated valves, some newer Porsche vehicles utilize an electronic valve actuator, please ensure before ordering.
Product Details:
Our custom vacuum line caps are a great way to enhance the sound of your Porsche. Most commonly used on the 718 GT4 that closes the factory valve at random times, these are a simple to install solution that will keep your exhaust valves in a permanently open position.
These caps provide an air tight seal and clean OEM-look.
Features
- Keep exhaust valves opened for louder sound
- Strong & durable
- High-definition 3D printed
- Made in-house in the USA
Install
All you need to do is remove the vacuum line from the valve and insert the block off cap. Make sure the valves are in the open position when performing this step (they should be when the car idled and has been shut off). Due to variances, it may be necessary to remove the small metal clamp to secure the vacuum line block off caps in the vacuum lines. Simply use a pick and wiggle it back and forth to remove. Use a zip tie to secure it to the vacuum line in case you want to revert back to the OEM configuration at any time.
About Flat 6 Motorsports - 3D Labs

Flat 6 Motorsports' 3D printing capabilities go beyond just prototyping for product development. Our state of the art lab located within our headquarters in Orlando, FL houses our 3D Lab which we use to also produce end-use parts for customers. We leverage state of the art technology in Fused Deposition Modeling (FDM) and Selective Laser Sintering (SLS). Our in-house industrial machines provide high-quality parts for Porsche enthusiasts worldwide.
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.
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