Modifying Your Subaru – A Beginner’s Guide Part 3


BLOW-OFF and BYPASS VALVES

Replacing the factory bypass valve with an aftermarket product is often one of the first engine mods performed by Subaru owners. Aftermarket BOVs and BPVs are stronger, more durable and capable of withstanding much higher boost levels than the factory item. Turbosmart offers a variety of different bolt-on BOVs and BPVs to suit your Subaru.


Kompact Plumb Back

The Kompact Plumb Back is a full recirculating bypass valve. Small in size and inexpensive, it’s ideal for enthusiasts on a budget who still want the performace and reliability benefits of a quality BOV.

Suits WRX MY01-MY07, STi MY01-08, Forester 05-07.

For a full features list click here.


Vee Port Pro

Vee Port Pro is a full atmospheric BOV. It features a unique, variable exhaust port system, providing superior venting of excess pressure. Only slightly larger in size than the Kompact PB, it’s an Ideal choice for street-tuned WRXs and STis.

Suits all WRX 2001-2007 models and Forester 05-07.

For a full features list click here.

 


 

 

 

Plumb Back

Full size, recirculating valve. Adjustment via a rotating cap. If you want a quiet valve, that’s easy to install and setup – the Plumb Back is your ideal choice.

Suits all WRX 2001-2007 models and Forester 05-07.

For a full features list click here.

 

 


 

 

Supersonic

Now we’re getting into the big flow and even bigger sound.The Supersonic is a full atmospheric BOV, adjustable via a rotating cap. If you’re serious about flow then this is the BOV for you.

Suits all 2001-2007 models and Forester 05-07.

For a full list of features click here.

 

 

 



Dual Port (2001-07)

This is the most versatile valve in our arsenal. The Subaru Dual Port features sequential ports for quiet operation on mild boost and full performance at full boost. It can be converted to a full atmospheric, full bypass or a 50/50 valve. Ideal if you want a quiet valve for street driving but all the benefits of a high-flowing atmospheric bov on a track.

Suits WRX MY01-MY07, STi MY01-08, Forester 05-07.

For full list of features click here.

 

 



Dual Port (2008-current)

This is an updated version of the original Subaru Plumb Back (above) re-engineering to suit the current Subaru models.

Suits Subaru Legacy/Liberty GT, WRXMY08-current, Forester MY08-current. Also suits Mazdaspeed (MPS) 3, 6 and Mazda CX7.

For a full list of features click here.

Next: Getting serious.

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