DINAN GLOSS CARBON FIBER COLD AIR INTAKE - 2021-2024 BMW M2/M3/M4 Gloss Carbon Fiber - G80/G82/G83/G87
- Description
- Fitment
- Refund Policy
Features:
- Reduced intake restriction for Increased turbo efficiency with greater power potential on modified builds
- More robust and aggressive induction soundtrack
- Improved throttle response
- More Flow: 12.4% increase over stock system (Stock: 815 CFM, Dinan: 916 CFM @ 28" H2O).
- Larger volume air boxes (26% larger than stock) and tubes/plenum (50% larger than stock) allowing an increased volume of air to be utilized
- 11% increase in filter area (stock: 65in², Dinan: 72in² per side) for optimum flow
- Multiple finish options: Available in 2x2 Gloss or Matte Twill Carbon (Gloss Twill shown)
- Bolt-on installation
FLOW BENCH TESTING & CFD ANALYSIS
The Dinan intake system outflows the factory setup by over 12% at 28" of H2O and averages 14% greater flow across all the tested scenarios. This translates into the ability to support higher power levels (ie: future-proofing the intake as a restriction to your future goals). The chart shown below is the summation of individual CFM measurements for both OEM driver and passenger intake tracts and in the case of the Dinan flow measurements, both boxes joined with the shared plenum. Utilizing a central plenum as opposed to two separate intake paths created a challenge in comparing the flow measurements of stock vs. Dinan on the bench but one that needed to be done to ensure the viability of the preferred symmetrical design. Numerous test sets to challenge and/or verify the data were used which included the following setups:
- 1 turbo inlet blocked with both filter sides open.
- 1 turbo inlet blocked with one filter inlet blocked.
- 1 turbo inlet blocked with the plenum blocked 2" past the opposite turbo inlet to as closely simulate the OEM individual pathways as possible.
With each successive test it became apparent that no matter the combination, the CFM measurement itself was largely unaffected by the shared plenum regardless of how much extra volume on the opposing side of the path was being utilized. In fact, between all 3 setups, the difference in CFM was within 2% across the entire range. Additional tables breaking down the individual driver and passenger banks are also supplied for those looking for more minute detail.
In addition to flow bench testing, CFD analysis was also utilized to ensure the central plenum did not cause unnecessary turbulence that could cause a reduction in flow properties. The point where the 2 flow paths met within the shared pathway particularly was of great interest and under intense scrutiny. With some minor tweaks to the design the flow paths remained largely distinct from one another despite the shared space.
Our policy lasts 14 days. If 14 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange.
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.
Note:
* Customer must pay for the shipping to the original manufacturer.
Several types of goods are exempt from being returned. Perishable goods such as food, flowers, newspapers or magazines cannot be returned. We also do not accept products that are intimate or sanitary goods, hazardous materials, or flammable liquids or gases.
Additional non-returnable items:
* Gift cards
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)
* Book with obvious signs of use
* Any item not in its original condition, is damaged or missing parts for reasons not due to our error.
* Any item that is returned more than 14 days after delivery
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.
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
Exchanges
We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email at amtuning.ca@outlook.com labelled as “Defective Item”
Gifts
If the item was marked as a gift when purchased and shipped directly to you, you’ll receive a gift credit for the value of your return. Once the returned item is received, a gift certificate will be mailed to you.
If the item wasn’t marked as a gift when purchased, or the gift giver had the order shipped to themselves to give to you later, we will send a refund to the gift giver and he will find out about your return.
Shipping
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 return shipping will be deducted from your refund.
Depending on where you live, the time it may take for your exchanged product to reach you, may vary.
If you are shipping an item over $75, you should consider using a trackable shipping service or purchasing shipping insurance. We don’t guarantee that we will receive your returned item.
