Dump valve and air induction kit?

Hi

I'm considering a dump valve for the unmistakable hiss when changing gear. A mate of mine with a focus rs has told be that his dump valve releases the pressure into the air box and as such has had to have an open air filter fitted too. If I were to fit a dump valve will I need the same set up or does the dump valve release into the atmosphere instead??

To be honest I'm also considering an enclosed air induction kit with cold air feed for the noise it makes, is this advisable? What kind of set ups do you guys have?

Cheers

Ps. If you read my other thread on exhausts I think I've made my mind up and am going to order a blueflame catback for now! Can't wait.

Whats VAG engine?

So if i want a noticeable dump wots the best option. Like i say my mate has a k+n induction kit and i think he gets the sound im looking for.

that sounds good, yeh dont want too loud just want to know its there. i still want the engine running sweet tho wen you say VAG engines dont like atmos DVs would you suffer from misfires etc? I'm not down with that!

wots t.i.p?

mafs?

ha i thought i knew a little bit about cars and engines and stuff but i have no clue with abbreviations!!

ive started a new thread now asking about brakes! Im going the nurburgring again in May and wanting the motor smart as poss beforehand! youve all been a great help so far!

Blueflame exhaust, forge 007 dv and K+n all lined up so far i think!