hey guys I am just getting into euro cars and I am building my s4 up. my question is, is it ok to put an hks bov on my s4? Because my buddy has a vw and he said it not good for them if its not what should I use? thanks...

 

no dont use a bov. our cars run on a closed loop system so you cant just vent boost into the atmosphere. you need to re-circulate it. use a diverter valve. forge, apr, synapse, etc all make very good performance diverter valves. if youre not going beyond 500bhp you can use the oem 710n's that come off the audi 225 tt. i think vast is having a sale on them. they should be about $35-45 each. the others are around $150+ each.

what are your goals with your car?

 

i want to go all euro and clean. not to much but i want to be able to eat up all these shitty honda around me.

 

you should already be able to eat up all the shitty hondas around you that...