Hey, from my experience standard noise is more of traditional bov whistle noise and when I changed to Purple, now high pitch whistle noise is gone but more of intake air sounds but louder.
Haven't tried the gold yet.
As we are probably aware... when removing small allens heads, be sure to not to...
No Issues since installed which is about 2 years now. changed out bov sound by changing front to purple and now it make more intakes sounds then whooosh sounds.
For me even with EVS bracket, it was still rubbing with eventuri so I ended up getting whole HKS setup. Can't wait to see your...
I went thru both EVS V1 and V2 Front Lip and Splitter.
In my experience,
V1, It was super super tight fit, and my lower grille mesh wouldn't lock in and kept popping out. (Used it for about 2 years)
V2. Overall fitment was highly improved but lower grille mesh still would't lock in, so had to...
I drive my R daily running with HKS Bov but haven't faced any minor/major issues related running BOV.
It's arguable topic since we don't really have data.
I've seen owners with HKS BOV doing track or driving daily, but no signs of issue yet.
I'm just type of person believe company like HKS...
If you want to control the valve (close or open) then you need a controller. It is operated by bluetooth via phone or remote provided.
without sound controller you can just manually have valve fully open.