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N54 (3.0TT) Diverter Valve Charge Pipe


Introducing our new Diverter Valve Charge Pipe for the BMW N54 Twin Turbo Engine.  Fits all BMW 135i and 335i.

Diverter Valve Charge Pipe for factory style diverter valves (Polished Finish) 2006-08 Version

Diverter Valve Charge Pipe with black TIAL Q Blow Off Valve (Polished Finish) 2006-08 Version

Diverter Valve Charge Pipe with HKS SQV Racing (Type III Hard Anodize Black) 2009+ Version

Diverter Valve Charge Pipe with Red TIAL Q Blow Off Valve (Type III Hard Anodize Black) 2006-08 Version

Ease of Installation: (1 Easy, 5 Hard) 1

Key Features:

  • Now available for the 2009+ N54 Engines!
  • Increase throttle response and decreases turbo lag.
  • Compatible with factory diverter valves or aftermarket factory style diverter valves.
  • Lightweight High Grade 6061 Aluminum Piping.
  • Throttle body matched 3" piping.
  • Retains factory style o-ring throttle body lock flange.  Precision CNC machined throttle body flange ensures leak free connection to throttle body.  Quick and easy connection and disconnection to throttle body.  Ideal connection compared to the silicone hose and hose clamp connection found in all other aftermarket diverter valve upgrade pipes available in the marketplace.
  • Precision CNC machined MAP sensor flange ensures leak free connection.
  • Diverter Valve Charge Pipe features beaded ends and T-bolt clamps to prevent intercooler piping from coming off from boost.
  • Factory diverter valve sound baffle, which causes turbulence in the factory pipe, is removed.
  • Optional Type III Hard Black Anodizing (for stealth and OEM look).  Hard anodizing helps improve durability of intercooler piping.  Resists bent or dented piping.
  • Includes all hardware for complete installation.
  • Developed under the harsh conditions of racing on our 135i Race Car.
  • Optional TIAL Q Blow Off Valve available in 5 different colors (black, polished silver, red, blue and purple).
  • Optional Synapse Synchronic Blow Off Valve now available!!!
  • Optional HKS Super Sequential Blow Off Valve now available!!!
  • Limited Lifetime Warranty.

Polished Charge Pipe with black TIAL Q BOV on ER Time Attack 135i

Type III Hard Anodize Black Charge Pipe with red TIAL Q BOV on ER Time Attack 135i

Again, another parts development directly from our 135i Time Attack racing program.  The factory diverter valves were causing an issue of not being able to hold up against the rigors of high boost application, therefore they needed to be replaced.  Thus attention was brough to the factory diverter valve pipe and the need to optimize for maximum performance on a race car facilitated the need for a new pipe to be built.  Often ignored, charged intake airflow characteristics greatly affect throttle response, turbo lag and ultimately maximum power potential.  Smooth bends and minimal obstructions are ideal.  This is not the case with the factory diverter valve charge pipe.  On the factory diverter valve chargepipe features a sound baffle for the diverter valves.  This sound baffle is connected on the side of the factory diverter valve  charge pipe which splits airflow.  This causes turbulence inside the pipe which slows the charge intake air velocity (speed of the air traveling inside the pipe).  By removing this turbulence (by eliminating the factory diverter valve sound baffle), increased throttle response, decrease turbo lag and ultimately higher maximum power potential can be realized.  Our Diverter Valve  Charge Pipe eliminates this sound baffle and thus eliminating the unneccesary turbulence in the diverter valve pipe, keeping charge intake air velocity at it's maximum.  Apparrently, BMW thought the same thing as later model (2009-10) did not come with this baffle.

Charge Pipe with outlet for DV Sound Baffle

Later model Charge pipe with no outlet for DV Sound Baffle

Factory Charge Pipe with DV Sound Baffle attached vs ER Charge Pipe.  Note the better flow of the ER pipe.

Since one of the reasons for changing out the factory diverter valves was to prevent boost leaks (from prematurely opening on high boost), causing boost leaks while upgrading the diverter valve would be counterproductive.  During our research and development, the connection at the throttle body was looked over very carefully.  The factory diverter valve is connected to the throttle body using an o-ring inside the throttle body flange which is locked in place by a c-clip, which works very well.  It also make removal/installation quick and easy.  Our testing had shown it could hold quite a bit of boost.  During our testing, we had pressure tested this connection up to 25 PSI.  The reason why we stopped at 25 PSI was because at 25 PSI, one of the intake pipes on the turbo blew off and we could not test any higher.  Hoewver, we were confident that it would easily hold over 25 PSI as the throttle body flange showed no signs of failing.  Also, keep in mind, this type of connection is used throughout the engine, in many crutial areas like the coolant radiator system as well as the clutch system.  If BMW did not believe in the durability of this type of connection, they would not use it in such important areas.

Many of our competitors use a silicone hose connection for the throttle body connection.  It is not designed for a silicone hose connection which is used by all the other brand diverter valve pipe upgrades in the market.  The throttle body lip is too short and there are no "beads" to prevent the silicone hose from blowing off under boost.  Even though it is the easiest way to  "rig" together, it is not ideal.  The best way to connect the new diverter valve pipe to the throttle body is to replicate the same connection which we did.  We spent a lot of resources developing and manufacturing this factory style connection for this reason.

Precision CNC machined throttle body flange ensures boost leak free connection


The same issue came with the MAP sensor.  The MAP sensor seals to the factory diverter valve pipe via a o-ring on the sensor itself.  Having a hole in a silicone hose will definitely cause a boost leak as it will not properly seal.  Therefore, again we CNC machined our own replica MAP sensor flange that utilizes the same factory o-ring seal.

Precision CNC Machined MAP Sensor Flange ensures boost leak free connection

MAP Sensor attached to the flange.

The Diverter Valve Charge Pipe is available in the same 3 finish options as our intercoolers.  It is available in brush (plain) or mirror polish finish standard.  It is also available in our Type III Hard Black Anodizing for the  stealthy, factory look.  An added benefit of the Type III Hard Black Anodizing is that it hardens the aluminum piping and makes it more durable against damage (like dropping the pipe).

1/8" NPT Bungs (For Methanol or Nitrous Injectors):

With the popularity of methanol injection systems and nitrous systems, we have added the option of having a 1/8" NPT  threaded bung (for methanol or nos injectors) welded to our diverter valve charge pipe.  This allows quick and easy installation of methanol/nitrous injectors that are used in methanol injection systems and nitrous systems.  You have the option of adding 1 or 2 injector bungs.  Each 1/8" NPT bung will come with a plug so that you can run with or without the methanol injector.  This is perfect for those who do not have the Methanol Injection yet but plan to do so in the future.

1/8" NPT Bungs (for methanol or nitrious injectors).  Each bung comes with a plug (shown).

2009-10 Charge Pipes:

From June 2009 and on, BMW changed the intercooler piping on the N54 engine.  This revised intercooler piping essentially was exactly the same as the previous years except for one change.  The "accordian" style rubber elbow between the lower intercooler piping and the diverter valve charge pipe was now integrated into the diverter valve charge pipe.  In previous years, this "accordian" rubber elbow was a seperate part and could be removed.  Since, it is now part of the new revised diverter valve charge pipe, it could not be removed.  We now have a new diverter valve charge pipe designed specifically for the new N54 (June 2009+ build date).  Since the June 2009+ models charge pipes include what is knows as "the meth elbows", they cost $50 more which is still cheaper than purchasing a "meth elbow" that other companies that sell them for $100.  If you have a 2006 to 6/2009 and you want the "elbow" that replaces the "accordian" OEM elbow, you can purchase the 2010 model charge pipe.

Differences in Charge Pipes: 2006-08 vs 2009-10

Forge Diverter Valves:

We are now stocking and selling the Forge Diverter Valve Upgrade Kit.  They are available in machine allow (silver) or black.  For more information on the Forge Diverter Valve Upgrade Kit click here.  Choose this option if you are looking for an upgraded factory style valve.

Blow Off Valves (BOV):

The standard option for our Diverter Valve Upgrade Pipe is designed for either the factory diverter valves or aftermarket "factory style" diverter valve.  Also available is the TIAL Blow Off Valve option which utilizes the TIAL Q Blow Off Valve (BOV).  The TIAL Q BOV features a large 50mm (2") valve to quickly discharged built up boost pressure.  Since the TIAL Q BOV vents to the atmosphere which causes no restriction to venting boost, it reacts faster than recirculated diverter valves.  The internal valve spring can be changed out to different spring rates which allow adjustability.  This allows versatility as it allows you to increase the spring pressure in the future for when you run higher boost levels.  Therefore, it eliminates the need to purchase another BOV or diverter valve if you increase boost levels.  Essentially, this is the last blow off valve you will ever buy.  The TIAL Q BOV is available in 5 different colors: black, polished silver, red, blue and purple.  The black color option is standard.  If you want any other color, please specify when ordering.  The TIAL BOV is the quiestest BOV option.

Tial Q Blow Off Valve

Available in Black, Polished Silver, Red, Blue and Purple

HKS Super Sequential Blow Off Valve (SSQV) 4 Blow Off Valve (BOV).  You can order it with just  the HKS BOV flange welded on or with the SSQV BOV included.  We include only genuine HKS SSQV 4 (no oversea knock offs like you see on E-bay).  The HKS BOV is designed to make a loud sound when releasing.  Choose this option if you want all your neighbors to hear you coming down the street.

HKS SSQV 4 Blow Off Valve


HKS SQV Racing Blow Off Valve is a larger version of the HKS SSQV 4.  It features a 51mm valve to release more pressure.  You can order it with just the HKS Racing BOV flange welded on or with the SQV Racing BOV included.  We include only genuine HKS SQV Racing (no oversea knock offs like you see on E-bay).  

HKS SQV Racing Blow Off Valve


We can also build our Diverter Valve Charge Pipe to utilize any BOV or diverter valve you desire.  Love the way the Greddy BOV sounds?  No problem, we can weld any BOV flange on our Diverter Valve Charge Pipe so that you can utilize any BOV or diverter valve you want.  Due to the fact that there are so many options for BOV's and diverter valves, it will be impossible for us to stock these options.  Therefore, it is available only as a special order and will be built to order.  Contact any of our authorized dealers for more information on how to order this.  Only the TIAL, Synapse and HKS BOVs are kept in stock.


Add a replacement throttle body C-Clip.  If your factory throttle body c-clip is lost or broken, you will need to order this.  For more information about the Throttle Body C-Clip Replacement, click here.

CAUTION: This product is intended for OFF ROAD USE ONLY. Not legal for use on pollution controlled vechiles upon public road/highways.   THIS PRODUCT IS FOR SALE FOR ALL 49 STATES EXCLUDING CALIFORNIA.  


The item is for sale for international customers without restriction.

Free Evolution Racewerks keychain lanyard and license plate frame with purchase!

Free Gift with purchase!


List Price: $249.95
Price: $224.95