atmospheric means you are letting whatever boost is left out to the atmosphere.... less air means rich.. when you get a 100% atmospheric bov and your ems isnt tuned for the loss of air you will run rich once the pressure is let off.

if you get a recirculating bov (stock is recirculating) it will recirculate the air charge back into your intake. if your ems isn't tuned for this type of bov you will notice an erratic (sh!tty) idle.

imo it doesnt really matter wtf bov u get. if you want people to look at you whenever u boost ur turbo and then let off the gas right away get an atmospheric venting bov because it will make noise. if you do not care about the noise then just keep the stock one.

when you run rich because of a atmospheric bov it will only be when you are off the throttle. when you are off the throttle im guessing you arent really after power at that point so the loss of power is of no concern.

if you are worried about the gas mileage part of running rich then don't modify ur car.

 

U DONT NEED A BOV THE STock 1 is fine lol sorry 4 the caps... its just for looks/noise.... bov actually slows u down when u get to high hp ... it causes u to lose a tiny bit of boost in each shift... u can either got for speed or looks up 2 u... i had the hks ssqv and took it off.... u got those cadillacs out there wit 24 in rims... or u got those subies with turbo upgrades and catless exhausts... its all what u want... but if u want str8 speed... new BOV isnt needed... just a waste of money

 

nothing wrong with getting a BOV... just get one. dont worry about the i-club technicians who spread info like a plague. although it does create rich conditions, the sound will more than make up for the over-exaggerated backfire.