finally got around to installing my dump to atoms BOV's, they seem to be very quite and don't actually make a Pssssht sound, more a wirrrly sound lol, BUT as im sure im not the only one, and yes i know all about the argument for and against due to metered air, but im actually interested in those who already have dump to atmos, is your car running fine with them and how long have you had yours installed?

have you taken out or disconnected the OEM circulating valves ?

have you taken out or disconnected the OEM circulating valves ?

 

have indeed, they are installed where the old Recircs were, with blanking plates where needed

I've had my Apexi's installed for years and they've been fine. Not caused any running problems at all, other than I need to remember to blip the throttle after dumping if I'm not going back into gear otherwise the revs will drop right down and almost stall. Which brand are yours Vods? Are they adjustable? If they are set too loose then they'll be almost leaking boost and won't make a noise. Too tight and you'll get surge.

I've had my Apexi's installed for years and they've been fine. Not caused any running problems at all, other than I need to remember to blip the throttle after dumping if I'm not going back into gear otherwise the revs will drop right down and almost stall. Which brand are yours Vods? Are they adjustable? If they are set too loose then they'll be almost leaking boost and won't make a noise. Too tight and you'll get surge.

 

they are called APEX, not APEXI's lol i have no idea if they are adjustable, should of got some pictures first, i think they are but cant be certain, they have a ring around the edge to adjust the noise level though.

http://www.subaru-impreza.org/forum/parts-accessories-sale/90965-apexs-dump-valve.html

 

this is the one bud, and according to this thread as well, they are adjustable.

I have twin baileys on mine and it runs perfectly, theyve been on for around 4 months-ish.

the 'i' stands for International (I think) - you should be able to use an allen key right in the end of the units to tighten/loosen the springs. I'm not sure if the ring with the different sized holes makes any difference TBH.

 

EDIT - they should look like this: the adjustable bit is at the top

the 'i' stands for International (I think) - you should be able to use an allen key right in the end of the units to tighten/loosen the springs. I'm not sure if the ring with the different sized holes makes any difference TBH

 

i think the ring, is just for the sound, mine sound like flutter rather than air brakes lol