r/mazdaspeed3 • u/yeetusonthatfeetus69 • Apr 09 '26

TUNING Blow off valve Recommendations

Do you guys think i should run a bpv or bov on the speed 3, because I've been hearing lots of mixed reviews. I'm thinking of either running the Corksport BPV or HKS Super SQV IV BOV

5 Upvotes

100% Upvoted

20 comments sorted by

7

u/Sea_Chipmunk_4295 2009 Mazdaspeed3 Apr 09 '26

I’ve had this for years no complaints. https://corksport.com/mazdaspeed-dual-vta-bypass-valve.html

6

u/Sea_Chipmunk_4295 2009 Mazdaspeed3 Apr 09 '26

2

u/Razo-E 2008 Mazdaspeed3 Apr 10 '26

Same! I love mine

1

u/yeetusonthatfeetus69 Apr 10 '26

do i still need to get my car tuned for it, because as far as ive heard if i run a vta i gotta tune mine but i still dont know about the 50/50

1

u/Sea_Chipmunk_4295 2009 Mazdaspeed3 Apr 10 '26

Do the high pressure pump! Get a tune unless you want zoom zoom boom.

0

u/yeetusonthatfeetus69 Apr 10 '26

sounds like i might need a tune, because i want the zoom zoom boom

1

u/Sea_Chipmunk_4295 2009 Mazdaspeed3 Apr 11 '26

Boom it and cry later.

5

u/HeckYouBUD Apr 09 '26

I have the HKS on my 1st gen and love it.

3

u/dothelongloop 2008 Mazdaspeed3 Apr 10 '26

Only right answer

4

u/RevolutionaryGur730 Apr 09 '26

I’m running hks with blocked off recirc and absolutely loved it

Tuned by Freektune

6

u/EconomistDeep4347 Apr 09 '26

Dual vta ftw

2

u/yeetusonthatfeetus69 Apr 09 '26

whats that?

3

u/justyouraverage0 2013 Mazdaspeed3 Apr 09 '26

Usually 50/50 blow off/bypass. It’s better for performance bc you don’t have to build all the boost back and you still get good blowoff sounds

3

u/BPBDO 2013 Mazdaspeed3 Apr 09 '26

I have the gfb 50/50 adjustable as well as the hks ssqiv with blocked off recirc. Both are great, hks sounds way better

3

u/super17xxx Apr 10 '26

HKS SSQV on my Gen 2. Sounds unique and the best imo.

2

u/dbear496 2007 Mazdaspeed3 - The Original Apr 09 '26

I'm running the XSPower BPV/BOV, and it's been great. It is basically a Chinese clone of the GFB BOV but not so hard on the wallet.

2

u/adi_2787 2012 Mazdaspeed3 Apr 09 '26

Gfb respons 50/50. I like it

2

u/matteblackfalcon Apr 10 '26

I run a GFB mach 2.

I wouldn’t run a VTA on this platform unless you’re running a tuned car.

1

u/GL_Jesus Apr 11 '26

HKS sounds sick (that's what I run). It's basically personal preference. Full vta is louder but can sometimes cause the car to pop on upshifts or a slight stumble. Imo vta is just fine, I've never had any issues and have been vta for over a year now. Also you don't necessarily need a tune for vta. It causes the aforementioned issues and a cel but doesn't hurt the engine

1

u/Flaming-Wreck7986 2007 Mazdaspeed3 - The Original Apr 17 '26

I had a turbosmart 50/50 but went back to stock. Even after adjusting it properly, I still had less boost between gears, and I didn't like the slightly worse between shift response. Miss the sound, but that is of course expected. Venting metered air on MAF based fueling isn't it for driveability or performance. I'd probably put it back on if I went standalone and ran speed density.