amego

looking for one had a little search can and cant fit with maf cencers vent to atmosphere and recerculating whats the difference i have a uk turbo some peaple say dump valves mess with your airflow meter

the_msp

VTA or Re-circ's shouldn't affect your MAF.... induction kits on the other hand might

briforbes

Basically, by fitting a dump valve, you will confuse the car's fuelling for a fraction of a second when you close the throttle, i.e. change gear or lift off.

Where with a recirculating valve, air is passed back into the inlet, with an atmospheric, i.e. noisy, dump valve, the air "goes missing" and so there is a bit too much fuel for a small amount of time.

In practice, this means you will feel "lag" when changing gear and it won't run as smoothly as with a recirculating valve. You'll also get pops out of the exhaust as the extra fuel explodes.

They're crap...don't do it. Fun for five minutes then you'll get bored.

psychomorph

Oh so not true, sometimes I don't bother with the radio just to listen to the car poping and whoooosssshhhhhiiiiinnnnnggggg, its great!

monkeysan

^^^ agreed - although my 3yr old loves it more

TURBOTRONICS

I have a dp motor sports vent to atmosphere on my 94 wrx jdm and can honestly say I felt no difference between the standard one and the dp one apart from as said above I get a bit more pop backs and the bonus of a really funny granny frightening toy I know its silly but it still makes me laugh

snowy

dump valves are great,get 1.i fitted mine 2 weeks ago and no change
what so ever,just a bigger grin.

sc00by_rich

Just won a forge vta on ebay this afternoon cant wait to fit it and scare some grannys!!!

mickywrx

iTrader: (29)

Forge VTA's aren't very loud IMO

Whether that's a good or bad thing is down to preference.

Norman Dog

iTrader: (1)

I have this one fitted:-

Dual Stage BOV - WorxTuning Components

Won it on US ebay.

It's a hybrid, you can set to full recirc or 100% VTA, makes a nice woooosh above 4000rpm