Eventuri BMW E9X M3 Gloss Carbon Intake

Performance Gain Dyno: 8-10hp, 10-12ft-lb
Performance Gain Road Dyno (Insoric): 16hp, 14Nm
IAT Difference with Ambient: Stock 7.5C : Eventuri 4.5C
V-Box Acceleration : 100-200kph Reduced By 0.3 Seconds 

The BMW E9X M3 Eventuri intake system is the result of extensive research and optimisation which improves possibly one of the best designed stock intake systems we have seen. The E9X stock airbox system is a brilliantly designed intake with an excellent flow path and feed system for ambient air. However on closer inspection, there are restrictions in the inlet tube connecting the airbox to the inlet manifold. By redesigning the tube yet maintaining the airbox, we have been able to allow the V8 engine to breathe with greater efficiency and therefore gain power. In addition to the new tube design, we also identified a further restriction in the air feed system. To overcome this we designed a scoop to allow an increase in airflow through the airbox. This reduces inlet temperature values further and adds to the performance gain of the system.

Performance:

Part Number : EVE-E9X-CF-INT - BMW E9X M3 black carbon intake GLOSSPart Number : EVE-E9X-CFM-INT - BMW E9X M3 black carbon intake MATTE

Performance Gain Dyno: 8-10hp, 10-12ft-lb

Dyno tests were carried out showing a consistent gain of approximately 9hp and 11ft-lb of torque. The gain is not just at the peak but throughout the RPM range. This translates on the road to increased part throttle and full throttle response with the car pulling much more eagerly to the redline. The testing was done on the same day back-to-back and temperatures were monitored to ensure consistency. The car was tested firstly with the stock intake - hood closed. We then left the car on the dyno and installed the Eventuri. The car was then run again - hood closed. Several runs were carried out with both configurations to get a consistent result.



Performance Gain Road Dyno (Insoric): 16hp, 14Nm

The system was also tested using a road based measurement device (Insoric). On the road, the airflow is a lot better than the fan can achieve on the dyno and so the intake system is able to perform better. The following graph shows the difference the Eventuri intake makes on the road compared with the stock airbox. The measured gains were 16Hp and 14Nm : Solid lines show with the Eventuri and dashed lines are with stock airbox. Red line is power at the crank and blue line is at the wheels.



Data Logging Flow and Inlet Temperature

To monitor and record data output from the ECU we used a Bavarian Technic diagnostics tool. The car was fitted with the stock system and then data was logged in 4th gear to the redline. Then the Eventuri intake was fitted and the same method applied. The outputs show that the air mass flow with the Eventuri is higher across the entire RPM range - with a bigger difference at higher RPM where the restrictions in the stock system become more apparent. Furthermore the difference between the ambient temperature and the inlet air temperature (IAT) is also smaller with the Eventuri due to the scoop enabling a higher air speed through the airbox. Here are 2 screenshots of the data output, one at approximately 5000rpm and the other at approximately 8300rpm.

Data Logging summary:

• 5000rpm IAT difference with ambient: Stock intake = 9.6 Degrees C : Eventuri = 5.3 Degrees C
• 8300rpm IAT difference with ambient: Stock intake = 7.6 Degrees C : Eventuri = 4.7 Degrees C
• 5000rpm Air Mass Flow Rate: Stock intake = 635 kg/h : Eventuri = 650 kg/h
• 8300rpm Air Mass Flow Rate: Stock intake = 1168 kg/h : Eventuri = 1202 kg/h

The Interactive graph can be seen HERE

VBox Acceleration Tests

Finally we took the car for some road testing using a Vbox unit to record the acceleration from 60-130mph (also 100-200Km/h). For the Vbox testing our test car had a primary decat and stage 2 tune for all test runs. Testing was carried out on the same stretch of road - again on the same day to keep variables minimum. Results show that with just the intake added, the acceleration times from 60-130mph and also 100-200Km/h reduced by approximately 0.3 seconds which is a significant change at such speeds.

Acceleration results summary:

• 60-130mph with Stock intake = 11.157 seconds
• 60-130mph with Eventuri intake = 10.886 seconds
• 100-200Km/h with Stock intake = 9.56 seconds
• 100-200Km/h with Eventuri intake = 9.236 seconds

Product details:

The Eventuri E9X M3 intake system consists of a number of components engineered to perform a specific purpose and fabricated to the highest of standards. Here are the details for each component and the design ethos behind them:

Each intake system consists of:

• Carbon Fibre Intake Tube
• High Flow Urethane Cone Filter
• Carbon Fibre inlet Scoop
• CNC Machined breather adapter
• Laser Cut Stainless Steel Debris Guard
• Silicon Coupler and OEM specification clamps

Carbon Intake Tube



The intake tube was designed to improve the airflow path compared to the stock tube - from the filter to the manifold. It is a 1-piece design which has no internal interfaces and therefore provides a much smoother path for the airflow to negotiate. Furthermore the geometrical transition is from a circular opening for the filter to the oval exit for the manifold. This is a much more efficient change in shape when compared with the stock tube which has to transition from a rectangular opening for the filter to the oval exit for the manifold.

In order to appreciate the improvement in the design we must take a closer look at the stock system:



As can be seen - the stock intake tube has 2 concertina sections which are used to allow the tube some flexibility for engine movement. These sections introduce multiple internal interfaces to the oncoming airflow which results in turbulence and therefore a less efficient path for performance. The Eventuri tube on the other hand has zero internal interfaces and so airflow is allowed to stay laminar which allows the engine to breathe more efficiently.





Another drawback of the stock tube is the large internal face at the stock filter connection. This exposed wall causes airflow to circulate as it enters the tube from the filter due to the sharp change in geometry from the rectangular filter opening to the more oval tube shape.





Now this can be compared with our tube design which has a much more gradual change in shape from a circular opening at the filter end to the oval opening at the inlet manifold end:





Flexibility and Movement

An important challenge to overcome was the requirement of movement with the engine. Instead of using silicon couplers with flexible sections (which would introduce similar interfaces as the stock tube), we designed the tube itself to be able to move with the engine. The tube has a compressible neoprene band around the section which interfaces with the stock airbox. This section seals the tube to the airbox yet allows movement in and out of the airbox as the engine moves. By allowing the tube itself to move - we have been able to create a flow path which is as smooth as possible.





Carbon Air Scoop



The E9X M3 airbox system is saturated with cold air from 2 feeds : a lower feed from underneath the headlamp and an upper feed from behind the kidney grills. The primary feed is the lower one from underneath the headlamp as it connects directly to the airbox with minimal change of direction and a large opening to the airbox. This is also a high pressure area of the car and airflow moves through the airbox from underneath to the exit at the top connecting to the exit vent in the bonnet. The other feed from behind the kidney grills which, although is a welcome addition, provides a much lower volume of air to the airbox than the lower feed. This is because airflow has to change direction through 90 degrees twice and also because the duct narrows down significantly before the entry to the airbox.

Looking at the lower duct more closely, it becomes clear that the duct has a large ridge which comes back on itself just before the opening to the airbox. This acts as a barrier which inhibits direct entry of airflow to the box by reducing the entry speed of the airflow.



By designing a scoop to sit on top of the stock duct and curve up sooner to eliminate this ridge - airflow is now allowed to transition from the duct to the airbox without restriction.



The airflow path is much smoother and as a result, the velocity of the air entering the airbox significantly increases. This allows the intake temperatures to be lower than without the scoop : we have data logged IATs road where we managed to reduce intake air temperature by 2 degrees using the scoop. To illustrate the effectiveness of the scoop, we devised a simple experiment with a leaf blower to generate flow and an air speed meter to measure the speed of the air entering the airbox. We secured the blower in one position so that it pushed air directly into the lower duct and placed the meter inside the airbox to measure the speed coming in. Results showed a significant increase in speed of almost 50% when using the scoop. The full testing video can be seen in the Video Tab.

Debris Shield

The final component is a debris shield attached to the filter - this deflects debris and water from impacting the filter directly. With the increase of airflow entering the airbox with the scoop - this is an important addition. There is no negative impact on performance since the airflow is not impeded through the airbox - temperatures are still lower than stock.

We are just as keen as you to start your new modification journey. Our team works tirelessly on getting all your orders fulfilled as soon as possible.

When will I receive my item?

Dispatch Times

All orders are usually processed and dispatched within 1-3 business days of the order being confirmed and contingent to stock availability. Please note, during high sales periods, there may be some delays. For more accurate shipping times, please get in contact with us.

Delivery Times

Once dispatched, delivery time will vary dependent on its destination. For most states including VIC, NSW, QLD and SA, we expect delivery times ranging between 1-5 business days. For WA, NT and TAS we do expect slightly longer freight times. Zero Offset cannot be held accountable to reasonable shipping delays incurred by the freighting company.

While we do our best to have your order delivered within the listed timeframes above, we're not able to guarantee an exact delivery date.

Please note items from your order may be delivered separately. You can keep up to date with delivery times via the tracking link sent to you.

Why is my item taking longer than usual?

Sometimes things go astray, and it is completely out of our control. However, we are here to help the best we can. If your item has not been delivered and the ETA for delivery has well and truly passed (more than 10 business days past the expected delivery date), get in contact with the courier and lodge claim. Then contact us and let us know what is happening so we can monitor it on our end as well. If the item is deemed ‘lost’ we will send out a replacement to you. If a replacement is unavailable, we will issue store-credit, refund or initiate an exchange for another item from our store. Please note, that the courier must officially deem the package as "lost" before we can send out a replacement.

My package arrived damaged

We are sorry to hear this. Don’t panic, we are here to help. To resolve any claims as quickly as possible, please send us photos of the items damaged in transit. You must notify us of the damages within 7 days of delivery. This will ensure that the claim damages fall within the warranty window. Please contact our team through the Contact Form. Our team will then request photos and other evidence to progress the claim.

The tracking says delivered, but I have not received the item

Unfortunately, this can occur for many reasons including parcel mishandling, theft or system error made by the Courier. In this event, we urge you to contact the courier service immediately. For those who have selected our package protection at checkout, we will send out a replacement to you without delay. If a replacement is unavailable, we will issue store-credit.

Please note: Each claim is assessed by our team and reviewed thoroughly to ensure a timely resolution for any of the delivery issues. Zero Offset reserves the right to reject any claims that do not meet the criteria, therefore the customer will need to seek resolution through the courier or local authorities in the event of delivery theft.

Rural Areas Shipping

Our shipping prices are fixed for Metro areas in each state. However, additional shipping charges may apply if the postal address is in a rural area.

Return Postage

If there is a change of mind return or exchange, the buyer is responsible for all return postage fees and costs.

Warranties

Shop with confidence knowing you’re covered. Our Warranty Policies at Zero Offset cover manufacturing faults on our products for either a repair or replacement. In the event a repair or replacement is unavailable, you will be issued with store-credit in the purchase amount.

If there is an issue with your Zero Offset product and you believe it may be covered under the specific product's Warranty Policy, please reach out to our team via the contact us page.

Please note: Proof of purchase must be provided (i.e. #XXXXX order number), without this we will not be able to process your claim. Cosmetic damage and general wear and tear from product use are not covered under our policies. Improper maintenance of the product will not be covered. This includes the use of acid-based cleaning supplies which adversely affect all automotive products. For maintenance direction, please seek advice from our team.

Parts & Accessories Warranty

We offer a one-year warranty on all Zero Offset body kits and accessories. This warranty also extends to all pre-painted products. This is limited to manufacturing defects only and does not extend to Zero Offset items bought second hand.

This warranty does not apply if the product(s) fall under the following:

• Improper handling and installation
• General wear and tear
• Breakages, scuffs, scratches and other forms of damage caused from external impacts
• Improper care and maintenance

All other branded items that we sell fall within the same warranty parameters listed on their company website. If you are unsure of the policy, please get in touch with our team prior to purchase and we will be able assist. Zero Offset cannot be held to the warranty restrictions and limitations offered by other brands.  

Installation Warranty

If you choose us to fit your parts in-store, we offer one-year complimentary warranty on our work. This covers the work we do to fit the item. If we have fitted your item, and you believe something is not right, contact us immediately. We urge you not to try and fix it yourself as any subsequent tampering will void this warranty policy.

This warranty does not apply if the product(s) fall under the following:

• Improper handling, care and/or maintenance
• General wear and tear
• Breakages, scuffs, scratches and other forms of damage caused from external impacts
• Has been handled by a third party, including yourself after the installation (i.e. been removed or tampered with by another shop).
• Natural Disasters

If you have purchased extended care, the same conditions above will apply.

Shop with confidence at Zero Offset. If there is something wrong with the item, or the item isn't right for you, then tell us and we will do our best to assist. Before you get in contact, see our policy below.

How do I return or exchange my order?

If you have placed an order with us, and you decide that the item you have purchased from Zero Offset is not for you based on one of the following reasons below, you can return or exchange it within 30 days of receiving the product once approved by our team. The buyer is responsible for the return postage.

Factory fault or manufacturing defect

Sometimes things may go wrong during production, and that is okay. If your item arrives with a factory fault or manufacturing defect, please email photos to support@zerooffset.com.au with your order number. We urge you to get in contact within 7 days of delivery for our team to best assess the item. If the item is deemed defective, we will issue a replacement sent to you. If a replacement is unavailable, we will issue store-credit, refund or initiate an exchange for another item from our store.

Change of mind

We are confident you will love your new Zero Offset products. However, if you decide that this is not the product for you, then you may return the item if the product(s) meet the conditions set out in this policy. The products must be unused, in their original condition and in their original packaging.

We cannot accept a return if:

• Used items - products must be unused, in their original condition and in their original packaging
• The item has been fitted – screwed, drilled, cut etc.
• You have already returned or exchanged the item once previously (an item can be returned once per order. This does not apply if the original return or exchange was due to a factory fault or manufacturing defect)
• The order was purchased during a promotion where T & C's specified that the item is excluded from the returns policy
  
  

Is Packaging Required?

Zero Offset requires all returns & exchanged items to be re-packaged in its original packaging, including any hardware or promotional items such as stickers, booklets etc. If the returned item is not packaged accordingly, Zero Offset reserves the right to withdraw the order for refund or exchange. You will need to pay for any subsequent re-shipping fees.

Pre-order Cancellation

If you have secured an item(s) through our pre-order service and would like to cancel, we will offer a full refund if the expected time of delivery is delayed by more than two months from its original expected delivery date. For example, if the item was scheduled for mid-late July, you will be eligible for a full refund if the expected delivery date is pushed past the start of October. If our team does notify you of the delay within this period, to which you agree to keep the order with us, the period will then restart two months from the new expected delivery date.

However, if you would like to cancel a pre-order within this new period, the pre-order will be subject to a 20% cancellation fee if the item was paid in full. Please also be advised, if a deposit was made to secure an item(s) and you choose to cancel, you will forfeit that deposit.