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TurboXS Boost Controller and Blow Off Valves

TurboXS Boost Controllers and Blow Off Valves


TurboXS Standard Boost Controller

TurboXS BC-SBC Standard Boost Controller

Possibly the most effective way to generate more power from your turbocharged vehicle is to simply increase the boost pressure. This can be achieved quickly and very cost effectively with the TurboXS Standard Boost Controller.

The TurboXS Standard Boost Controller is installed in line with the pressure hose running from the positive pressure side of the turbo to the wastegate actuator system.

The TurboXS Standard Boost Controller can be used on vehicles with internal and external waste gate systems and on vehicles fitted with factory electronic boost control systems.

Quick & Easy to Install

Simply cut the waste gate pressure hose and insert the supply pressure hose onto the brass nipple of the boost controller. Insert the waste gate supply hose onto the blue colored nipple. Secure the hoses with hose clamps. Alternatively, use the hose extension which eliminates the need to cut the pre-existing pressure hose. The Boost Controller can be mounted with the mounting bracket.

Simple Accurate Adjustment

The boost pressure is adjusted via the adjusting screw located internally on the top of the TurboXS Boost Controller. The vehicle’s boost pressure can be increased by winding the adjusting screw in the counter-clockwise direction. Once the boost pressure has been increased, winding the adjusting screw in the clockwise direction will decrease the boost pressure. Typically, one (1) full turn of the adjusting screw in the counter-clockwise direction will result in a turbo boost increase of one psi.


TurboXS Dual Stage Boost Controller

TurboXS BC-DSBC Dual Stage Boost Controller

The TurboXS Dual Stage Boost Controller has set the drag racing world on fire with its ability to hold two different boost levels rock solid. Used by the fastest drag racers in the world looking for that extra edge such as:

  • Abel Ibarra, Flaco Racing K& N RX-7: 7.33 @ 179.88 MPH
  • JoJo Callos, Castrol Syntec Integra: 9.03 @ 156 MPH
  • Marco Passante, Magnus Motorsport's Worlds Fastest 2nd Gen AWD Eagle Talon: 9.62 @ 141.99 MPH
  • Jason Hunt, Worlds Fastest Street Legal FWD Honda: 9.87 @ 148 MPH

All the things that you like about the Standard Boost Controller with the added ability to switch between 2 pre-set boost levels from inside the cabin - even when under full boost!

"The efficiency of the low-boost launch greatly improved the 60-foot, 330-foot and 1/8-mile, while switching to full boost at the top-end helped in the quicker 1320 e.t. In the realm of rear-drive imports, the Flaco Racing RX-7 piloted by Abel Ibarra relies on a TurboXS dual-stage boost controller. Since making the switch to the DSBC unit, the car has improved its previous record of 7.83 at 173 mph to an eye-popping 7.58 at 175 mph. With the TurboXS boost controller, Abel also obtained a blistering 1.07-second 60-foot on his record pass. The Flaco Racing pilot credits his launch boost and improved top-end mph to the DSBC unit. How's that for bang-for-buck proven performance?"
— Turbo & High-Tech Performance, Dec 2000

The TurboXS Dual Stage Boost Controller is installed in line with the pressure hose running from the positive pressure side of the turbo to the waste gate actuator system. A switch is wired back to the cabin to switch between boost levels. The switch is lit when on high boost.

The TurboXS Dual Stage Boost Controller kit includes:
  • Dual Stage Boost Controller & Mounting Bracket
  • Electrical Plug and Wiring Loom
  • 6mm Pressure Hose
  • Control Switch
  • Necessary Installation Accessories

It can be used on vehicles with internal and external waste gate systems and on vehicles fitted with factory electronic boost control systems. (Electronic boost controllers must be disabled.)


TurboXS High Performance Boost Controller

TurboXS BC-HPBC High Perfomance Boost Controller

Designed for those who want the ability to radically increase their boost levels 1 to 30 psi above stock, but don’t want to pay hundreds of dollars to do it. The TurboXS High Performance Boost Controller (HPBC) is the right choice for simple, accurate and reliable high level boost control.

"When it came time for a boost controller Doug's Dynopower's Doug Derby chose the TurboXS HPBC manual unit. It's ease of adjustment, ability to hold boost levels rock solid and its budget friendly price were prime attractions."
— Turbo & High-Tech Performance, Mar 2002

Accurate Boost Control

The HPBC has two (2) boost control mechanisms built into it. One is a ball and spring mechanism for large and coarse boost pressure increases and the other is a bleed valve system for precise boost pressure setting. The ball and spring mechanism keeps pressure out of the wastegate until the preset boost level is reached, significantly reducing wastegate creep and providing quicker turbo spool up. Boost is adjusted with the simple turn of the screws using the included 2mm hex key.

"Once dialed in, one turn of the adjuster really does increase the boost 1 psi. It doesn't get much more straight forward than that."
— Turbo & High-Tech Performance, Mar 2002

The TurboXS High Performance Boost Controller kit includes:
  • High Performance Boost Controller
  • 6mm vacuum / pressure hose
  • Mounting Bracket
  • 12mm hose clamps
  • 2mm Hex Key
Quick & Easy to Install

Installs as easily as the Turbo XS Standard Boost Controller: Simply cut the waste gate pressure hose and insert the supply pressure hose onto the brass nipple of the boost controller. Insert the waste gate supply hose onto the blue colored nipple. Secure the hoses with hose clamps. The Boost Controller can be mounted with included mounting bracket.


TurboXS Blow Off Valve Type S

TurboXS BOV-S Blow Off Valve Type S

The TurboXS Blow Off Valve - Type S is designed to release compressor pressure surge caused by changing gears or backing off the throttle quickly. This valve is an extremely important part of any turbo system allowing quicker turbo spool up between gear changes and greatly increasing the life of a turbocharger. The BOV Type S is recommended for small to medium sized turbo charged engines running up to 15 psi boost. Each valve is individually tested to hold 30 lbs. of boost. Sizing of valve is based on flow and not boost pressure.

The Turbo XS Blow Off Valve - Type S Kit includes:
  • TurboXS Blow Off Valve - Type S
  • Mild Steel Zinc Plated Weld-on Adaptor
  • Aluminum Weld-on Adaptor
  • Spring Adjusting Packer Washers
  • Installation Guide

For custom turbo applications, the TurboXS Blow Off Valve Type S is installed directly into the connecting pipe running between the turbo and the throttle body housing as shown in the diagram at the right of the screen. Click on it for a larger picture. We also have adapter kits for some stock turbocharged cars on our Blow Off Valve Kits and Adapters page.

The valve vents to atmosphere at sound pressure levels in excess of 106 dB when measured 3 feet from the valve.

The Turbo XS Type S Blow Off Valve is fully adjustable by adding adjusting packer washers included with the kit. The high grade aircraft aluminum body is anodized bright purple to provide outstanding looks and superior corrosion resistance.


TurboXS Blow Off Valve Type H

TurboXS BOV-H Blow Off Valve Type H

Designed for high performance, the TurboXS Blow Off Valve - Type H relieves compressor pressure surge caused by changing gears or backing off the throttle quickly. This valve is an extremely important part of any turbo system allowing quicker turbo spool up between gear changes and greatly increasing the life of a turbocharger. The BOV Type H provides greater venting flow than the Type S and is designed for turbo charged engines running 10 to 25 psi boost. Each valve is individually tested to hold 30 lbs. of boost. Sizing of valve is based on flow and not boost pressure.

The Turbo XS Blow Off Valve - Type H Kit includes :
  • TurboXS Blow Off Valve - Type H
  • Mild Steel Zinc Plated Weld-on Adaptor
  • Aluminum Weld-on Adaptor
  • Spring Adjusting Packer Washers
  • Installation Guide

For custom turbo applications, the TurboXS Blow Off Valve Type H is installed directly into the connecting pipe running between the turbo and the throttle body housing. We have vehicle specific adapter kits for most OEM turbocharged cars as well as adapters to mount our valve on some of our competitors flanges on our Blow Off Valve Kits and Adapters page.

The valve vents to atmosphere at sound pressure levels in excess of 110 db making it one of the loudest on the market. It is fully adjustable by adding packer washers to make sure the valve stays closed at idle.

If you want to follow the crowd, go buy one of our competitors valves. If you want a Blow Off Valve that looks, sounds and performs like no other blow off valve available in the market today, get the TurboXS Blow Off Valve Type H.


TurboXS Type H-RFL Blow-Off Valve

TurboXS BOV-H Blow Off Valve Type H-RFL

The redesigned Type H-RFL is for high performance applications with the desire to be noticed! If you need to ask this valve is too loud for you! A new larger billet aluminum body and a beefier piston ensures the valve remains smooth under the most demanding circumstances. This valve relieves compressor pressure surge caused by changing gears or backing off the throttle quickly and is designed for turbo charged engines running up to 25 psi boost.

The Turbo XS Type H-RFL Kit includes:
  • TurboXS Blow Off Valve Type H-RFL
  • Mild Steel Zinc Plated Weld-on Adaptor
  • Aluminum Weld-on Adaptor
  • Spring Adjusting Packer Washers
  • Installation Guide

Turbo XS has vehicle specific adapter kits for most OEM turbocharged cars as well as adapters to mount our valve on some of our competitors flanges on our Blow Off Valve Kits and Adapters page.

For custom turbo applications, the TurboXS Blow Off Valve Type H is installed directly into the connecting pipe running between the turbo and the throttle body housing.


TurboXS Racing Bypass Valve Type H34

TurboXS RBV-H34 Racing Bypass Valve Type H34

Designed for performance, the TurboXS Racing Bypass Valve Type H relieves the pressure surge caused by changing gears or backing off the throttle quickly. Because the valve’s exhaust port can easily be plumbed back into the car’s air intake, the valve is ideal for Mass Air Flow (MAF) metered cars where venting to atmosphere can create a "rich" air/fuel ratio. The Racing Bypass Valve Type H is CNC machined out of billet aluminum and is specifically designed with high boost applications in mind:

  • Billet aluminum valve body
  • Solid brass piston – no flimsy diaphragms to break
  • Stainless Steel spring
  • Adjustable spring tension
  • Flows 35% more than our BOV Type H

The Turbo XS Racing Bypass Valve Type H is recommended for cars running 10 psi to 25 psi of boost. When properly installed and adjusted, there is practically no limit to the maximum boost pressure this unit can hold.

The Turbo XS Racing Bypass Valve Type H34 Kit Includes:
  • TurboXS Racing Bypass Valve
  • 34mm OD Anodized Aluminum Hose Adapter
  • Spring Adjusting Packer Washers
  • 2mm Hex Key
  • Installation Guide
  • Easy Installation

With the included 34mm hose adapter, the TurboXS Racing Bypass Valve is designed for "bolt-on" replacement of many late-model stock OEM bypass valves including Mitsubishi Eclipse/Talon, 3000GT/Stealth, Evolution, and Nissan 300ZX TT. For more details on complete vehicle specific installation kits, as well as mild steel and aluminum weld-on adapters for custom installation directly onto intercooler piping, see Blow Off Valve Kits and Adapters.


Turbo XS Racing Bypass Valve RBV-25

TurboXS RBV-25 Racing Bypass Valve Type 25

The Turbo XS Racing Bypass Valve Type 25 was specifically designed to replace the 1 inch (25mm) Bosch Bypass Valve used in most Volkswagen and Audi applications. The Bosch valve is prone to failure in stock application and not adequate for holding boost in "chipped" 1.8T equipped vehicles. The RBV-25 spring tension is adjustable, making it ideal for your modified vehicle. The RBV-25 relieves the pressure surge caused by changing gears or backing off the throttle quickly.

The Turbo XS RBV Type 25 Kit Includes:
  • TurboXS Racing Bypass Valve 25
  • Spring Adjusting Packer Washers
  • Installation Guide
  • Solid brass piston – no flimsy diaphragms to break
  • Stainless Steel spring
  • Adjustable spring tension

This bypass valve is ideal for the VW/Audi 1.8T vehicles since the factory ecu requires accurate signals from the MAF sensor.


TurboXS Adaptor Kits and Flanges

TurboXS Blow Off Valve Adapters

These Turbo XS adapter kits and flanges make it easy for you to replace your factory or aftermarket blow off valve in minutes. Some things to note before buying a Blow Off Valve/Bypass valve adapter kit or adapter:

  • Blow Off Valves and Bypass Valves are sold separately from the kits
  • Blow Off Valves come standard with both aluminum and steel weld-on adapters for custom installs
  • RBV-H34 comes standard with a 34mm anodized aluminum hose adapter
  • Type H kits/flanges fit the Blow Off Valve Type H, Blow Off Valve Type H-RFL, AND Racing Bypass Valve Type H34
  • You need two (2) BOV-Hs for a 300ZX Twin Turbo, but only one (1) adapter kit
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