CORKSPORT Mazdaspeed 3/6 MZR Bypass Valve

Add performance and style while protecting your turbo with the Patent Pending CorkSport Mazdaspeed MZR Bypass Valve. Using an innovative patent pending design utilizing a wave spring, we were able to reduce the spring height of the OEM Bypass Valve by 50%. This size reduction provides the same amount of force while accelerating the speed of the valve. By increasing speed the Bypass Valve effectively increases the life of your turbo by preventing premature wear since the BPV can safely move at speeds 33% faster than stock or other valves. With the extra space allowed by the spring, we were able to increase piston size by over 30%. The increase in size means the bypass valve has a larger venting area, which reduces the time it takes to vent air, allowing larger turbos better venting. Together the smaller size of the spring, and the piston redesign means the body of the valve was reduced. This means you don't have to worry about interference with key parts such as airboxes, custom turbos, intercooler kits, or other modifications that might need the room. Thanks to these innovations the patent-pending CorkSport Mazdaspeed MZR Bypass valve will be a welcome addition to any turbocharged engine bay.

*This kit comes with everything you need to upgrade from your factory BPV*

The CorkSport Advantages:

Fitment:Mazdaspeed 3, Mazdaspeed 6, Mazda CX7
Larger Piston Area: Increased piston area allows greater venting.
50% Decrease in Spring Size: Smaller spring is 33% faster at reacting
Made from billet aluminum: For a lightweight and durable build.
Compact Size: Patent pending design uses less space compared to the OEM bypass valve means you have more room for modifications.
CorkSport Service and Support: Receive a two-year limited warranty, full color installation instructions, all of the needed installation hardware, and knowledgeable telephone support.

Patent Pending

How To Install the Mazdaspeed MZR Bypass Valve

It will take you Approx. 1 hour to install.

1 Hour Install Time

1/5 Difficulty

2-Year Warranty

No CEL

It sounds sick I want to try it!

Oh guy with the GT turbo, it worries me that your not to sure why your bov isnt opening ... the only way im saying that is because 1. Its bad if it isnt opening

2. It probably hopefully is just guessing youve got a bypass hose hooked up and u just cant hear it

3. Do you have any supporting mods to backup your not stock turbo, or who did you get the car from I'll trade you for a ko4 with a workin hks ssqv lV :)

4. If you some how managed to put that in your self just take your bov/bpv off only takes like 5 minutes to take it off, squish squish the piston ands see if it moves, then loosen the top bolt till its not so hard (lol).

5.get a oil catch can!!!

6.or you can sell the turbo just sayin, cough/nudge/wink/wink.

7. Refer to 6.

Matthew Newton11/12/2013, 03:47 PM

I just installed the new MZR bypass valve on my 2012 Speed 3 and all I can say is wow! The turbo spool time is significantly reduced and the new bypass valve holds boost all the way to redline unlike the stock one. The sound is not very pronounced, but then again I still have the stock intake. This may change with an aftermarket intake. There were no funny sounds as others have noticed, but I did compress the piston quite a few times before installing so this may have helped. Personally, I prefer function over sound any day, so this was a huge win in my book.

Richardson10/20/2013, 06:26 PM

How many PSI for this spring ?

Rémi MARTIN10/17/2013, 01:28 PM

i have a gt3076r my current bov i feel like is not let air go through like its supposed to any reviews on big turbos will this bov be help full

Esteban10/17/2013, 01:19 PM

agreed ....sound clip.......also ....does it require maintenance I.E lube

James10/17/2013, 10:38 AM

SOUND CLIP!!!!

Zach Jewell10/17/2013, 10:06 AM

← Prev

1 2 3 4 56

Write a review

Would this be Compatible to a 2.0 Mazda 3 04-10 motor ?

Asked by Jordan Ruiz | 08/13/2022, 07:59 AM | 1 answer(s)

Can I use a gasket instead of o-ring if desired, the BPV I am replacing uses gasket type. Thank you V/R Anthony

Asked by Anthony | 09/08/2019, 02:55 PM | 1 answer(s)

do i need to get a gasket to place it in between the manifold and BPV?

Asked by DAVID | 04/12/2019, 03:23 PM | 1 answer(s)

heard that bypass valves can affect engine longevity, is that the case?

Asked by Jesse | 06/04/2018, 11:46 AM | 0 answer(s)

Can I use air tool oil to relubricate the piston and rings like the vta valve? Or is there a better option?

Asked by Terrell Blackman | 11/07/2017, 07:43 AM | 1 answer(s)

Can you please tell me if this comes pre lubed? Thanks

Asked by Daniel Blanchfield | 09/26/2016, 04:56 PM | 1 answer(s)

Just to verify, this will pass smog in California?

Asked by Garrett | 12/19/2016, 12:53 PM | 1 answer(s)

Is this bpv better then the mazdaspeed 3 duel vta bpv?

Asked by Eden | 12/20/2016, 06:30 AM | 1 answer(s)

Would this fit my stock 2008 ms3?

Asked by Pascal Cadieux | 10/30/2016, 02:44 PM | 0 answer(s)

I am pretty sure my stock valve is leaking at bout 19PSI. While I am using the stock turbo now I may want to upgrade later and increase the boost. I want to know how much boost this valve is designed to hold. I understand that it vents fast and that is great, but I want to make sure it also holds boost. If it sounded like Stock I would like it better, just not a fan of drawing additional attention. Thanks Jon

Asked by Jon Gatewood | 05/22/2016, 05:17 PM | 3 answer(s)

What boost PSI will this valve hold and is it adjustable?

Asked by Jon Gatewood | 05/13/2016, 07:46 AM | 3 answer(s)

Will this fit on my 2010 Mazda 3 even if it doesn't have turbo?

Asked by Travis Certeza | 04/08/2016, 03:58 PM | 0 answer(s)

Will this bpv work with if I have stock intake with box?

Asked by marty03 | 04/08/2016, 11:43 AM | 0 answer(s)

Will this part fit an 08 cx7 awd

Asked by Joseph | 02/24/2016, 10:35 PM | 1 answer(s)

I do not hear any sound? is this normal?

Asked by Francisco Sanchez | 02/23/2016, 04:26 PM | 1 answer(s)

Do you really have to clean it every 6 months?My stock 2013 which I got with 3 Miles on it now has 9500 Miles in two years has never been cleaned.

Asked by Kirk | 07/22/2015, 11:17 AM | 1 answer(s)

Is it possible under low pressue for the valve to not open up. At idle ill rev to 3k i get a whistle that unwinds as the rpms do almost sounds like compressor surge.

Asked by Stephen Duran | 06/30/2015, 10:17 PM | 1 answer(s)

Would like to know if this particular bpv would fit and work properly on 2006 ms6 being that the Ms3 has the same motor and turbo?

Asked by Damien | 06/15/2015, 08:52 AM | 1 answer(s)

how does the CS BPV compare to the Forge V2 BPV? and why CS over Forge? thanks for the help.

Asked by Michael | 04/13/2015, 08:39 AM | 1 answer(s)

if I added this bypass valve to my stock car (only have an axle back exhaust from corksport) would I need to get an access port as well as have it tuned or would this function perfectly fine without an access port and or tune?

Asked by Dustin Mauger | 03/03/2015, 07:17 PM | 1 answer(s)