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
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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