this, i have one on my wrx. although the valve got annoying at idle and deceleration since im unequal length headers and what not, so i welded it to stay open. but cruising and stuff like that it was dead quiet.
this, i have one on my wrx. although the valve got annoying at idle and deceleration since im unequal length headers and what not, so i welded it to stay open. but cruising and stuff like that it was dead quiet.