How-To: Install Turbosmart Dual Port BOV on 2010+ Mazdaspeed3

Purchase this Blow Off Valve directly from us HERE


TurboSmart valves are one if not the best out on the market. Pulling this dual port out of the box you can tell they take pride in their products. Very nice looking CNC’d aluminum. They include an instructional CD, block off plate to run fully recirculating, new gasket, allen wrench and a nice sticker.

I took a few pictures comparing the stock valve to the TurboSmart so everyone can see the differences.

The installation on this is very easy. All you need is a 10mm socket and ratchet and a couple pairs of pliers for the hose clamps.
If you don’t have an aftermarket intake on your car then this along with most of the other aftermarket valves will not fit.

Pull the two 10mm bolts out, use your pliers to remove the clamp and vacuum hose from the top of the factory valve along with the return hose.

Reinstall the new gasket, valve with the 2 10mm bolts being careful not to over torque them (71-88in/lbs), vacuum hose and return hose.

I really love this valve, sounds and performs amazing. We are going to work on getting a sound clip video made up for everyone to hear what it sounds like .



  1. carlos floressays:

    Hi chief, I am reading your post, it looks great, but, you said it is a recirculated valve, but I can see it has a hole where the air cames out, how can it recicurlate the air if it is released to the atmosphere through that hole?. It is has some adjustment?.

    Carlos Flores

Leave a comment

Please be polite. We appreciate that. Your email address will not be published and required fields are marked