3 Piece Kit for complete Eventuri intake system for a E9X M3.

Enhance your M3 with the full suite of Eventuri Carbon products.

This set includes the following products which can also be purchased invididually here on Scuderia Autoart.

1. Eventuri E9X M3 Plenum

2. Eventuri E9X M3 Black Carbon Intake

3. Eventuri E9X M3 Black Carbon Airbox Lid

BMW E9X M3 CARBON PLENUM

*Some images shown with the optional Carbon Intake and Airbox Lid. M and V8 badges not included.

Introducing our E9X M3 Carbon Fiber Plenum. Made from 100% high grade prepreg carbon including the internal trumpets, this plenum replaces the stock plastic version and unleashes the roar of the naturally aspirated BMW V8 engine. Since the trumpet lengths are tuned by BMW to the internal volume, changing this could result in a loss of performance so we kept the same volume to not upset the way the car drives in terms of power delivery. Although there isn't a performance gain from the carbon plenum, the induction sound generated takes the driving experience of the M3 to a whole new level. The raw V8 rumble gives the M3 an almost CSL like sound and is truly an intoxicating experience. We went through several iterations using different carbon thicknesses to fine tune the sound and the resulting plenum generates an almost unbelievable induction volume and tone.

This plenum can be used with the OEM airbox or any aftermarket intake system. Our own additional E9X M3 intake system provides a genuine performance gain and can be found HERE.

The Eventuri E9X M3 Carbon inlet plenum is crafted from 100% prepreg carbon fiber and consists of a number of components engineered to perform a specific purpose:
Each Plenum consists of:

• Carbon Fibre base and Lid
• 8 x Carbon trumpets with OEM specifications
• 8 x CNC machined aluminium flanges
• CNC machined temperature sensor boss
• CNC machined breather boss

A lot of attention was given to the fitment of the plenum to ensure that it fits just like OEM. The precision machined flanges allow for easy placement and installation of the plenum. Furthermore the CNC machined temperature sensor boss allows for an exact and secure fit of the sensor - just like the OEM version. No corners were cut in the development of this plenum and together with our additional E9X M3 intake system, the transformation of the car is astounding.

BMW E9X M3

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 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

The perfect finishing touch to your E90 | E92 | E93 M3 engine bay.

Direct replacement for the OEM plastic airbox lid.

Made from the same high quality 100% pre-preg carbon fibre that Eventuri use for their intake systems.