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Active Autowerke Stainless Steel Exhaust Stubbies for BMW E90/E92/E93 M3

Original price was: $315.00.Current price is: $78.75.

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SKU: 11-020 Category: Brand:

Description

The Active Autowerke N52 Performance Exhaust Header is specifically designed for BMW chassis which utilize the N52 inline 6-cylinder engine. With our performance header for the N52, you will be able to increase the exhaust flow of your BMW while gaining additional power u2013 something that is difficult to accomplish on these vehicles.

This header was engineered to promote optimum flow and eliminate any restrictions that could possibly rob the engine of extra horsepower. Available for a number of BMW applications, the Active Autowerke N52 Performance Exhaust Header should be one of the first upgrades owners elect to make. Not to mention, the tremendous effects can be felt almost immediately.

Key Features:

  • Dyno-Proven 20+ WHP gains over stock manifold
  • Improved power & torque curves throughout entire RPM range
  • Available for Coupe, Convertible, & Sedan
  • Designed for RACE and/or TRACK USE
  • 100% 304 Brushed Stainless Steel finish
  • Mandrel-bent tubing for a smooth & unrestricted flow
  • Each header test fitted on N52 Header jig
  • Guaranteed to fit on BMW E9X 328i w/N52 engine
  • Includes all gaskets needed for installation ( $150 SAVINGS )
  • Two-year Limited Warranty

N52 EXHAUST HEADER APPLICATIONS:

E82:

  • 128i Coupe or Convertible

E9X:

  • 325i/325xi Sedan, Coupe, or Convertible
  • 328i/328xi Sedan, Coupe, or Convertible
  • 330i/330xi Sedan, Couple, or Convertible
  • WILL NOT FIT RHD CARS

MODIFICATIONS:

  • Active Autowerke N52 Performance Exhaust Header
  • 3 Stage intake manifold (charcoal air filter removed)
  • K&N Drop-in filteru00a0
  • Stock exhaust (with secondary catalytic converters intact)

NOTE:

– Header system designed for off-road use and racing application only
– Will generate **CEL** without Active Autowerke N52 software upgrade

Mustang Dyno Results – BMW 328i Auto:

u00a0

MODIFICATIONS:u00a0

  • Active Autowerke Performance Exhaust Header
  • Stock intake manifold (charcoal filter removed)
  • OEM paper air intake filter
  • Stock exhaust (with secondary catalytic converters intact)

RESULTS:u00a0

Bottom line – stock 328i Automatic: u00a0175 WHP | 161 WTQ
Middle line – AA Header & charcoal filter delete: u00a0198 WHP |179 WTQ
Top line – AA header, AA software, & charcoal filter delete: u00a0207 WHP | 192 WTQ

u00a0u00a0

Created With Performance In Mind

As is the goal with building any header, the purpose of designing the N52 Performance Header was increase horsepower and improve overall performance. Our header does a tremendous job of freeing up untapped horsepower that the BMW N52 is capable of producing. After many dyno runs and recorded results, the data validates the Active Autowerke N52 Performance Header as must-have BMW performance part for a noticeable and powerful upgrade.

Material & Durability

Suitable for either naturally aspirated or supercharged applications, the N52 Header by Active Autowerke is made entirely of 100% 304 stainless steel. With this header, worrying about durability is a thing of the past.

Installation

Is installing the header difficult to do? Not at all! Robust exhaust flanges with recessed mounting holes make the installation of your N52 Performance Header a breeze. With a few quick turns of a ratchet, you will be well on your way to feeling the additional horsepower.

NOTE:u00a0Active Autowerke GUARANTEES that each and every N52 Performance Header will be a precise fit. Every Active Autowerke N52 Header is test-fitted on our N52 motor jig as part of our quality control.

Hardware:

As far as mounting hardware is concerned, this system is absolutely complete. The BMW N52 engine uses a single-use oval shape gasket to help seal the exhaust manifold against the exhaust port u2013 a floating design that also self-centers the exhaust flange as it is being torqued. Reuse of this gasket is NOT SUGGESTED which is why we provide you with SIX new gaskets as part of the installation hardware.

Also included are two fiber gaskets for where the header meets the remaining sections of the exhaust system. Copper locking nuts for the header to mount against the cylinder head and mounting bolts w/nuts to secure the header to the exhaust system are included as well.u00a0

NOTE:u00a0The factory exhaust catalysts MUST be removed in the process, making this solution recommended for off-road and racing applications ONLY. There will be a CEL without Active Autowerke software upgrade

The Active Autowerke N52 Performance Exhaust Header is specifically designed for BMW chassis which utilize the N52 inline 6-cylinder engine. With our performance header for the N52, you will be able to increase the exhaust flow of your BMW while gaining additional power u2013 something that is difficult to accomplish on these vehicles.

This header was engineered to promote optimum flow and eliminate any restrictions that could possibly rob the engine of extra horsepower. Available for a number of BMW applications, the Active Autowerke N52 Performance Exhaust Header should be one of the first upgrades owners elect to make. Not to mention, the tremendous effects can be felt almost immediately.

Key Features:

  • Dyno-Proven 20+ WHP gains over stock manifold
  • Improved power & torque curves throughout entire RPM range
  • Available for Coupe, Convertible, & Sedan
  • Designed for RACE and/or TRACK USE
  • 100% 304 Brushed Stainless Steel finish
  • Mandrel-bent tubing for a smooth & unrestricted flow
  • Each header test fitted on N52 Header jig
  • Guaranteed to fit on BMW E9X 328i w/N52 engine
  • Includes all gaskets needed for installation ( $150 SAVINGS )
  • Two-year Limited Warranty

N52 EXHAUST HEADER APPLICATIONS:

E82:

  • 128i Coupe or Convertible

E9X:

  • 325i/325xi Sedan, Coupe, or Convertible
  • 328i/328xi Sedan, Coupe, or Convertible
  • 330i/330xi Sedan, Couple, or Convertible
  • WILL NOT FIT RHD CARS

MODIFICATIONS:

  • Active Autowerke N52 Performance Exhaust Header
  • 3 Stage intake manifold (charcoal air filter removed)
  • K&N Drop-in filteru00a0
  • Stock exhaust (with secondary catalytic converters intact)

NOTE:

– Header system designed for off-road use and racing application only
– Will generate **CEL** without Active Autowerke N52 software upgrade

Mustang Dyno Results – BMW 328i Auto:

u00a0

MODIFICATIONS:u00a0

  • Active Autowerke Performance Exhaust Header
  • Stock intake manifold (charcoal filter removed)
  • OEM paper air intake filter
  • Stock exhaust (with secondary catalytic converters intact)

RESULTS:u00a0

Bottom line – stock 328i Automatic: u00a0175 WHP | 161 WTQ
Middle line – AA Header & charcoal filter delete: u00a0198 WHP |179 WTQ
Top line – AA header, AA software, & charcoal filter delete: u00a0207 WHP | 192 WTQ

u00a0u00a0

Created With Performance In Mind

As is the goal with building any header, the purpose of designing the N52 Performance Header was increase horsepower and improve overall performance. Our header does a tremendous job of freeing up untapped horsepower that the BMW N52 is capable of producing. After many dyno runs and recorded results, the data validates the Active Autowerke N52 Performance Header as must-have BMW performance part for a noticeable and powerful upgrade.

Material & Durability

Suitable for either naturally aspirated or supercharged applications, the N52 Header by Active Autowerke is made entirely of 100% 304 stainless steel. With this header, worrying about durability is a thing of the past.

Installation

Is installing the header difficult to do? Not at all! Robust exhaust flanges with recessed mounting holes make the installation of your N52 Performance Header a breeze. With a few quick turns of a ratchet, you will be well on your way to feeling the additional horsepower.

NOTE:u00a0Active Autowerke GUARANTEES that each and every N52 Performance Header will be a precise fit. Every Active Autowerke N52 Header is test-fitted on our N52 motor jig as part of our quality control.

Hardware:

As far as mounting hardware is concerned, this system is absolutely complete. The BMW N52 engine uses a single-use oval shape gasket to help seal the exhaust manifold against the exhaust port u2013 a floating design that also self-centers the exhaust flange as it is being torqued. Reuse of this gasket is NOT SUGGESTED which is why we provide you with SIX new gaskets as part of the installation hardware.

Also included are two fiber gaskets for where the header meets the remaining sections of the exhaust system. Copper locking nuts for the header to mount against the cylinder head and mounting bolts w/nuts to secure the header to the exhaust system are included as well.u00a0

NOTE:u00a0The factory exhaust catalysts MUST be removed in the process, making this solution recommended for off-road and racing applications ONLY. There will be a CEL without Active Autowerke software upgrade

The Active Autowerke N52 Performance Exhaust Header is specifically designed for BMW chassis which utilize the N52 inline 6-cylinder engine. With our performance header for the N52, you will be able to increase the exhaust flow of your BMW while gaining additional power u2013 something that is difficult to accomplish on these vehicles.

This header was engineered to promote optimum flow and eliminate any restrictions that could possibly rob the engine of extra horsepower. Available for a number of BMW applications, the Active Autowerke N52 Performance Exhaust Header should be one of the first upgrades owners elect to make. Not to mention, the tremendous effects can be felt almost immediately.

Key Features:

  • Dyno-Proven 20+ WHP gains over stock manifold
  • Improved power & torque curves throughout entire RPM range
  • Available for Coupe, Convertible, & Sedan
  • Designed for RACE and/or TRACK USE
  • 100% 304 Brushed Stainless Steel finish
  • Mandrel-bent tubing for a smooth & unrestricted flow
  • Each header test fitted on N52 Header jig
  • Guaranteed to fit on BMW E9X 328i w/N52 engine
  • Includes all gaskets needed for installation ( $150 SAVINGS )
  • Two-year Limited Warranty

N52 EXHAUST HEADER APPLICATIONS:

E82:

  • 128i Coupe or Convertible

E9X:

  • 325i/325xi Sedan, Coupe, or Convertible
  • 328i/328xi Sedan, Coupe, or Convertible
  • 330i/330xi Sedan, Couple, or Convertible
  • WILL NOT FIT RHD CARS

MODIFICATIONS:

  • Active Autowerke N52 Performance Exhaust Header
  • 3 Stage intake manifold (charcoal air filter removed)
  • K&N Drop-in filteru00a0
  • Stock exhaust (with secondary catalytic converters intact)

NOTE:

– Header system designed for off-road use and racing application only
– Will generate **CEL** without Active Autowerke N52 software upgrade

Mustang Dyno Results – BMW 328i Auto:

u00a0

MODIFICATIONS:u00a0

  • Active Autowerke Performance Exhaust Header
  • Stock intake manifold (charcoal filter removed)
  • OEM paper air intake filter
  • Stock exhaust (with secondary catalytic converters intact)

RESULTS:u00a0

Bottom line – stock 328i Automatic: u00a0175 WHP | 161 WTQ
Middle line – AA Header & charcoal filter delete: u00a0198 WHP |179 WTQ
Top line – AA header, AA software, & charcoal filter delete: u00a0207 WHP | 192 WTQ

u00a0u00a0

Created With Performance In Mind

As is the goal with building any header, the purpose of designing the N52 Performance Header was increase horsepower and improve overall performance. Our header does a tremendous job of freeing up untapped horsepower that the BMW N52 is capable of producing. After many dyno runs and recorded results, the data validates the Active Autowerke N52 Performance Header as must-have BMW performance part for a noticeable and powerful upgrade.

Material & Durability

Suitable for either naturally aspirated or supercharged applications, the N52 Header by Active Autowerke is made entirely of 100% 304 stainless steel. With this header, worrying about durability is a thing of the past.

Installation

Is installing the header difficult to do? Not at all! Robust exhaust flanges with recessed mounting holes make the installation of your N52 Performance Header a breeze. With a few quick turns of a ratchet, you will be well on your way to feeling the additional horsepower.

NOTE:u00a0Active Autowerke GUARANTEES that each and every N52 Performance Header will be a precise fit. Every Active Autowerke N52 Header is test-fitted on our N52 motor jig as part of our quality control.

Hardware:

As far as mounting hardware is concerned, this system is absolutely complete. The BMW N52 engine uses a single-use oval shape gasket to help seal the exhaust manifold against the exhaust port u2013 a floating design that also self-centers the exhaust flange as it is being torqued. Reuse of this gasket is NOT SUGGESTED which is why we provide you with SIX new gaskets as part of the installation hardware.

Also included are two fiber gaskets for where the header meets the remaining sections of the exhaust system. Copper locking nuts for the header to mount against the cylinder head and mounting bolts w/nuts to secure the header to the exhaust system are included as well.u00a0

NOTE:u00a0The factory exhaust catalysts MUST be removed in the process, making this solution recommended for off-road and racing applications ONLY. There will be a CEL without Active Autowerke software upgrade

You already own the Active Autowerke Signature Series X pipe for your BMW E9x M3 to achieve the maximum in performance and power, but were limited only to the race track since it replaces the BMW factory exhaust catalysts and was not intended for the highways. The Active Autowerke Stubbies is designed primarily as a cost effective means of utilizing your existing BMW Factory catalysts into something usable.
If this can be done, then there is …No need to purchase as set of catalysts to be OBD11 readiness compliant… The Active Autowerke Stubbies with your BMW catalysts will do the task of meeting OBD11 readiness requirements when installed with the Active Autowerke X-PIPE. Of course, the feature of the added performance is still maintained. You will find that the front section of the Active Signature X pipe is totally removable by the use of V-Band clamps. Simply remove this front section and replace with the BMW primary catalysts that are converted with the Active Stubbies. What the Active Autowerke Stubbies have accomplished is to transform you existing BMW primary exhaust catalysts into a smaller, more compact unit that has added features. Just by cutting with a sawzall and welding by someone competent, you will have a re-sized BMW factory catalyst in a much smaller package. Now you can run the Active Signature X pipe on the street or the race circuit and all it takes is switching your front pipe sections to suit your surface conditions. This can be done repeatedly in multiple re-installs since there are no gaskets to replace. Factory Cats with Stubbies Installed (Factory Cats Not Included With Stubbies) As a added BONUS. Your original catalysts can now be stored easily in a smaller, more modular package. Features:

  • Meet OB11 readiness compliance
  • Very cost effective. $295.00 for the SET (sold as a PAIR)
  • Small and compact package
  • Multiple re-installs w/o the need for additional gasket
  • Modular for both Track and Street application

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