Blow Off Valves
I’ve installed a VeePort in my car and despite all the tuning the car still stalls.
Some cars with sensitive Air-Flow Meters will not respond well to atmospheric Blow-Off Valve. Turbosmart recommends fitting a bypass-type BOV like the Plumb Back. Fitting a bypass-type BOV will eliminate the stalling problem.
I’ve installed a Supersonic and now my engine is dipping below normal idle and stalling.
• Check the vacuum hose for splits, cracks, loose connection, kinking or any obstruction – old or fatigued hose may collapse under vacuum causing an obstruction • With the engine running remove the vacuum/pressure hose from the nipple in the cap of ...
Are spare parts available for the units?
Most of our valves have individual components available which are intended to be replaced on a regular basis. This includes commonly worn O-rings, diaphragms, V-band clamps and flanges. These are all available in the “Spares and Accessories” portion ...
Are rebuild kit’s available for the valves?
Yes, we offer O-ring kits for the majority of our piston style valves. These O-ring kits are designed to make O-ring selection much simpler for valves that require maintenance to replace old and worn O-rings.
How do I select the correct valve for my universal application?
Selecting the correct universal valve for your vehicle requires a baseline knowledge of your needs and intended air routing system. First, you need to identify the size of the valve that would be sufficient for the volume of air you will be ...
I don’t see a valve available for my specific model. Do you offer any universal valves?
Yes, some of our valves are ONLY offered as universal parts (such as the RacePort), and many of the other valve types are offered in universal fit forms, in addition to our vehicle-specific versions.
My valve is not functioning the way that it should be. What should I do?
The first step would be to perform some basic inspections on the valve and try to establish what potential causes might exist (such as a leak or an incorrect spring). If the valve is a piston-type valve and has not been maintained (cleaned and lubed) ...
How much boost can a valve hold?
Our valves are not rated by the amount of boost pressure that they can hold. A good rule of thumb is that if the hose supplying air into the top chamber of the valve is large enough to supply an adequate volume of air, then the valve itself should ...
What signs indicate that my valve is adjusted too hard?
If the valve is too stiff, then your vehicle will generally exhibit some level, large or small, of compressor surge (also known as turbo flutter). This sound may accompany a delayed (and short in duration) release of the air charge from the valve, or ...
What signs indicate my valve is adjusted too soft?
If the valve is too soft, then your vehicle will generally suffer from a valve that is open when it shouldn’t be (such as at idle) or from an extended air charge release (possibly in excess 3 seconds). If either of these conditions occur then the ...
Why/when/how would I adjust the valve?
Most valves come pre-adjusted to the correct setting for your vehicle. The two possible extremes that may require adjustment are a valve that is too stiff for your application or a valve that is too soft. If the valve is too stiff, your vehicle will ...
How are the valves adjustable?
Most Turbosmart piston-type blow-off valves offer a small range of adjustment by rotating the unit cap in the “Harder” or “Softer” direction, with the exception of the Kompact EM and the Kompact Plumbback, which don’t require this feature. In the ...
What’s the difference between a “Dual Port”, a “Supersonic”, and a “Plumb Back” valve?
Our “Dual Port” valves split the released compressed air, recirculating a portion of the air into the intake tract and removing the remaining air into the atmosphere. A “Supersonic” valve vents 100% of the compressed air charge into the atmosphere. A ...