BMW E46 M3
ACF Type: image
Performance increase = 10-15hp, 8-12ft-lb
The E46 M3 intake system is a result of extensive data logging, dyno testing and design optimisation. Our aim was to develop an intake system for the S54 engine which worked with the stock ECU map and MAF sensor and produced a genuine improvement in the driving experience.
The Eventuri Difference
The E46 M3 Eventuri system uses our Patented Carbon fibre Housing which provides an aerodynamically efficient airflow path from the filter to the MAF tube. Not just another cone filter with a heat shield but a unique design which invokes the Venturi affect. You can read more about the housing design and how it works here.
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This is a dyno graph showing the comparison between the Eventuri and the stock airbox on a standard car with just a rear exhaust and standard map. As you can see, power and torque are increased through a large portion of the rpm range not just at the peak. 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.
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- EVE-E46-INT : BMW E46 M3 Black Carbon intake
Components
Each component is engineered for a purpose and to a very high standard. Each kit consists of:
- 100% Prepreg Carbon Fibre Intake Housing
- Anodised Aluminium inlet cowling
- High Flow Filter
- CNC Machined MAF tube
- 100% Prepreg Carbon Fibre Air Scoop with CNC machined aluminium collar
- 3 Aluminum heat shields
- High quality Silicon coupler with BMW specification hose clamps
Carbon Intake Housing Assembly
Made from 100% prepreg carbon fibre of the highest quality, the workmanship on the housing is second to none. This encapsulates the filter and is mated to an aluminum inlet cowl to ensure a smooth inlet flow path. The filter itself is a deep pleated, high flow configuration which is dry to avoid damaging the MAF sensor. Finally the assembly is then mated to an aluminium heat shield which effectively shrouds the intake from engine bay heat and captures the ambient air being diverted from the scoop. Also notice the rubber spacer on the mount of the heat shield – this is for the headlight module to sit on so that it remains at the right height – small details are important!
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Our patented filter housing has a smooth reduction in cross sectional area as it shrouds the filter and tapers down to the tubing. This geometry invokes the Venturi effect where the airflow accelerates whilst maintaining laminar conditions. It can be thought of as a large velocity stack – below is a diagram to show the comparison between our patented design and a regular intake system. Our bespoke filters aid the airflow moving through the housings and allow for an even velocity profile as the airflow exits the housings. Further details can be read in the Technology and Filters pages.
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100% Prepreg carbon fibre with a CNC machined collar – the air scoop forces ambient air directly into the filter opening. This scoop simply clicks into place in the front right hand brake duct and effectively saturates the mouth of the intake with cold air. It has been designed to take up half the height of the duct in order to allow airflow to still continue through the duct for the brakes. The scoop is so effective that even after a hard drive, the aluminium cowl at the mouth of the intake will still feel cold to touch!
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The MAF tube is CNC machined from aluminium and then anodised. The MAF boss itself is machined from an engineering plastic to minimise the heat soak into the sensor through conduction. We have incorporated a machined recess on one side to allow the OEM rubber gasket from the stock airbox to be used for a perfect seal into the stock elbow.
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There are 3 aluminium heat shields. The main shield is part of the intake assembly as above. There is then an extension shield which fits onto the main shield and blocks hot air from the radiator. The last shield secures to the chassis underneath the carbon housing to minimise direct heat soak from the block. We used neoprene on the main shield to insulate it for optimum function in keeping inlet air temperatures as low as possible.
These components come together to improve the efficiency of the engine intake. The result – more power, throttle response and sound.
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STOCK INTAKE
) [1] => Array ( [text_image] => Array ( [ID] => 3134 [id] => 3134 [title] => Sound Placeholder [filename] => Sound-Placeholder.webp [filesize] => 2084 [url] => https://www.eventuri.net/wp-content/uploads/2025/11/Sound-Placeholder.webp [link] => https://www.eventuri.net/product/audi-8v-rs3-gen-1/sound-placeholder/ [alt] => [author] => 1 [description] => [caption] => [name] => sound-placeholder [status] => inherit [uploaded_to] => 101 [date] => 2025-11-07 13:48:44 [modified] => 2025-11-07 13:48:44 [menu_order] => 0 [mime_type] => image/webp [type] => image [subtype] => webp [icon] => https://www.eventuri.net/wp-includes/images/media/default.png [width] => 686 [height] => 442 [sizes] => Array ( [thumbnail] => https://www.eventuri.net/wp-content/uploads/2025/11/Sound-Placeholder-150x150.webp [thumbnail-width] => 150 [thumbnail-height] => 150 [medium] => https://www.eventuri.net/wp-content/uploads/2025/11/Sound-Placeholder-300x193.webp [medium-width] => 300 [medium-height] => 193 [medium_large] => https://www.eventuri.net/wp-content/uploads/2025/11/Sound-Placeholder.webp [medium_large-width] => 686 [medium_large-height] => 442 [large] => https://www.eventuri.net/wp-content/uploads/2025/11/Sound-Placeholder.webp [large-width] => 686 [large-height] => 442 [1536x1536] => https://www.eventuri.net/wp-content/uploads/2025/11/Sound-Placeholder.webp [1536x1536-width] => 686 [1536x1536-height] => 442 [2048x2048] => https://www.eventuri.net/wp-content/uploads/2025/11/Sound-Placeholder.webp [2048x2048-width] => 686 [2048x2048-height] => 442 [et-pb-post-main-image] => https://www.eventuri.net/wp-content/uploads/2025/11/Sound-Placeholder-400x250.webp [et-pb-post-main-image-width] => 400 [et-pb-post-main-image-height] => 250 [et-pb-post-main-image-fullwidth] => https://www.eventuri.net/wp-content/uploads/2025/11/Sound-Placeholder.webp [et-pb-post-main-image-fullwidth-width] => 686 [et-pb-post-main-image-fullwidth-height] => 442 [et-pb-portfolio-image] => https://www.eventuri.net/wp-content/uploads/2025/11/Sound-Placeholder-400x284.webp [et-pb-portfolio-image-width] => 400 [et-pb-portfolio-image-height] => 284 [et-pb-portfolio-module-image] => https://www.eventuri.net/wp-content/uploads/2025/11/Sound-Placeholder-510x382.webp [et-pb-portfolio-module-image-width] => 510 [et-pb-portfolio-module-image-height] => 382 [et-pb-portfolio-image-single] => https://www.eventuri.net/wp-content/uploads/2025/11/Sound-Placeholder.webp [et-pb-portfolio-image-single-width] => 686 [et-pb-portfolio-image-single-height] => 442 [et-pb-gallery-module-image-portrait] => https://www.eventuri.net/wp-content/uploads/2025/11/Sound-Placeholder-400x442.webp [et-pb-gallery-module-image-portrait-width] => 400 [et-pb-gallery-module-image-portrait-height] => 442 [et-pb-post-main-image-fullwidth-large] => https://www.eventuri.net/wp-content/uploads/2025/11/Sound-Placeholder.webp [et-pb-post-main-image-fullwidth-large-width] => 686 [et-pb-post-main-image-fullwidth-large-height] => 442 [et-pb-image--responsive--desktop] => https://www.eventuri.net/wp-content/uploads/2025/11/Sound-Placeholder.webp [et-pb-image--responsive--desktop-width] => 686 [et-pb-image--responsive--desktop-height] => 442 [et-pb-image--responsive--tablet] => https://www.eventuri.net/wp-content/uploads/2025/11/Sound-Placeholder.webp [et-pb-image--responsive--tablet-width] => 686 [et-pb-image--responsive--tablet-height] => 442 [et-pb-image--responsive--phone] => https://www.eventuri.net/wp-content/uploads/2025/11/Sound-Placeholder-480x309.webp [et-pb-image--responsive--phone-width] => 419 [et-pb-image--responsive--phone-height] => 270 ) ) [toggle_content] =>
EVENTURI INTAKE
) ) ) [3] => Array ( [toggle_heading] => Video [image_and_text_layout] => Array ( [0] => Array ( [text_image] => [toggle_content] => ) [1] => Array ( [text_image] => [toggle_content] => ) [2] => Array ( [text_image] => [toggle_content] => ) ) ) [4] => Array ( [toggle_heading] => Installation Guide [image_and_text_layout] => Array ( [0] => Array ( [text_image] => [toggle_content] =>Please download the installation guide.
) ) ) [5] => Array ( [toggle_heading] => Tags [image_and_text_layout] => Array ( [0] => Array ( [text_image] => [toggle_content] =>- bmwe46
- bmwm3
- E46 CAI
- E46 Intake
- E46 M3 airbox
- E46 M3 CSL
- E46 M3 intake
- E46 M3 performance
- E46 M3 power
- E46 Power
- e46intake
- e46m3
- m3 airbox
- m3intake
- S54 intake
) ) ) ) [menu_order] => 4 [instructions] => [required] => 0 [id] => [class] => [conditional_logic] => 0 [parent] => 82 [wrapper] => Array ( [width] => [class] => [id] => ) [layout] => block [pagination] => 0 [min] => 1 [max] => 0 [collapsed] => field_68bd1c52cdd47 [button_label] => Add More Tabs [rows_per_page] => 20 [_name] => add_tab [_valid] => 1 [sub_fields] => Array ( [0] => Array ( [ID] => 93 [key] => field_68bd1c52cdd47 [label] => Toggle Heading [name] => toggle_heading [aria-label] => [prefix] => acf [type] => text [value] => [menu_order] => 0 [instructions] => Add Toggle Heading like: Performance, Product Details, or more etc. [required] => 0 [id] => [class] => [conditional_logic] => 0 [parent] => 96 [wrapper] => Array ( [width] => [class] => [id] => ) [default_value] => [maxlength] => [placeholder] => [prepend] => [append] => [_name] => toggle_heading [_valid] => 1 [parent_repeater] => field_68bd1cbdae6cc ) [1] => Array ( [ID] => 3125 [key] => field_690df416cde6e [label] => Image and Text Layout [name] => image_and_text_layout [aria-label] => [prefix] => acf [type] => repeater [value] => [menu_order] => 1 [instructions] => [required] => 0 [id] => [class] => [conditional_logic] => 0 [parent] => 96 [wrapper] => Array ( [width] => [class] => [id] => ) [layout] => table [min] => 1 [max] => 0 [collapsed] => [button_label] => Add More [rows_per_page] => 20 [_name] => image_and_text_layout [_valid] => 1 [sub_fields] => Array ( [0] => Array ( [ID] => 3126 [key] => field_690df451cde6f [label] => Text image [name] => text_image [aria-label] => [prefix] => acf [type] => image [value] => [menu_order] => 0 [instructions] => Note: If there is no image for text or tab leave as it is! [required] => 0 [id] => [class] => [conditional_logic] => 0 [parent] => 3125 [wrapper] => Array ( [width] => [class] => [id] => ) [return_format] => array [library] => all [min_width] => [min_height] => [min_size] => [max_width] => [max_height] => [max_size] => [mime_types] => [preview_size] => medium [_name] => text_image [_valid] => 1 [parent_repeater] => field_690df416cde6e ) [1] => Array ( [ID] => 94 [key] => field_68bd1c73cdd48 [label] => Toggle Content [name] => toggle_content [aria-label] => [prefix] => acf [type] => wysiwyg [value] => [menu_order] => 1 [instructions] => Add Toggle detail like: content, images etc. [required] => 0 [id] => [class] => [conditional_logic] => 0 [parent] => 3125 [wrapper] => Array ( [width] => [class] => [id] => ) [default_value] => [tabs] => all [toolbar] => full [media_upload] => 1 [delay] => 0 [_name] => toggle_content [_valid] => 1 [parent_repeater] => field_690df416cde6e ) ) [parent_repeater] => field_68bd1cbdae6cc ) ) )
Performance
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This is a dyno graph showing the comparison between the Eventuri and the stock airbox on a standard car with just a rear exhaust and standard map. As you can see, power and torque are increased through a large portion of the rpm range not just at the peak. 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.
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Although the Eventuri system does not require a remap – we have seen further gains when the E46 M3 is subsequently remapped. The graph below shows another E46 M3 with 3 curves – stock, Eventuri and then Eventuri with a remap. In this instance the car was remapped by Evolve Automotive.
Product Details
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Part Numbers:
- EVE-E46-INT : BMW E46 M3 Black Carbon intake
Components
Each component is engineered for a purpose and to a very high standard. Each kit consists of:
- 100% Prepreg Carbon Fibre Intake Housing
- Anodised Aluminium inlet cowling
- High Flow Filter
- CNC Machined MAF tube
- 100% Prepreg Carbon Fibre Air Scoop with CNC machined aluminium collar
- 3 Aluminum heat shields
- High quality Silicon coupler with BMW specification hose clamps
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Carbon Intake Housing Assembly
Made from 100% prepreg carbon fibre of the highest quality, the workmanship on the housing is second to none. This encapsulates the filter and is mated to an aluminum inlet cowl to ensure a smooth inlet flow path. The filter itself is a deep pleated, high flow configuration which is dry to avoid damaging the MAF sensor. Finally the assembly is then mated to an aluminium heat shield which effectively shrouds the intake from engine bay heat and captures the ambient air being diverted from the scoop. Also notice the rubber spacer on the mount of the heat shield – this is for the headlight module to sit on so that it remains at the right height – small details are important!
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PATENTED TECHNOLOGY
Our patented filter housing has a smooth reduction in cross sectional area as it shrouds the filter and tapers down to the tubing. This geometry invokes the Venturi effect where the airflow accelerates whilst maintaining laminar conditions. It can be thought of as a large velocity stack – below is a diagram to show the comparison between our patented design and a regular intake system. Our bespoke filters aid the airflow moving through the housings and allow for an even velocity profile as the airflow exits the housings. Further details can be read in the Technology and Filters pages.
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Carbon Air Scoop
100% Prepreg carbon fibre with a CNC machined collar – the air scoop forces ambient air directly into the filter opening. This scoop simply clicks into place in the front right hand brake duct and effectively saturates the mouth of the intake with cold air. It has been designed to take up half the height of the duct in order to allow airflow to still continue through the duct for the brakes. The scoop is so effective that even after a hard drive, the aluminium cowl at the mouth of the intake will still feel cold to touch!
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MAF tube
The MAF tube is CNC machined from aluminium and then anodised. The MAF boss itself is machined from an engineering plastic to minimise the heat soak into the sensor through conduction. We have incorporated a machined recess on one side to allow the OEM rubber gasket from the stock airbox to be used for a perfect seal into the stock elbow.
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Heat Shields
There are 3 aluminium heat shields. The main shield is part of the intake assembly as above. There is then an extension shield which fits onto the main shield and blocks hot air from the radiator. The last shield secures to the chassis underneath the carbon housing to minimise direct heat soak from the block. We used neoprene on the main shield to insulate it for optimum function in keeping inlet air temperatures as low as possible.
These components come together to improve the efficiency of the engine intake. The result – more power, throttle response and sound.
Sound
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Sound samples before and after the Eventuri Intake on a standard E46 M3.
STOCK INTAKE
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EVENTURI INTAKE
Video
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Installation Guide
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Please download the installation guide.
Tags
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- bmwe46
- bmwm3
- E46 CAI
- E46 Intake
- E46 M3 airbox
- E46 M3 CSL
- E46 M3 intake
- E46 M3 performance
- E46 M3 power
- E46 Power
- e46intake
- e46m3
- m3 airbox
- m3intake
- S54 intake
RELATED PRODUCTS
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