very sexy.. lets us know how it works out

 

Nice. Hope it works out well for you. I would put a BOV on my car just for the PSHHHHHH but i would have to get a tune for it and that costs money.

 

You can't really tune for it. There are a few tables you can change to make it less bad. The problem is you are blowing off air metered by your maf. Less Air means rich conditions. This can cause you to bog down after the shift. This can also sometimes cause the ecu to lean things out in closed loop to compensate, then all of a sudden your running lean and knock can occur. It is generally at lower loads but I like my car to be as knock free as possible.

A BOV set VTA is a worthless noise maker. It generally will hinder performance. Unless your running a ton of boost the stock piece should hold. I would recommend running full recirc or at the very least 50/50.

There a way to run a BOV and have everything work out fine. It is called blow through MAF. On a front mount intercooler you put the maf after the bov and before the throttle body. You also gain the advantage of having true intake temperatures of compressed air because the intake temperature sensor is on the MAF sensor. Blow Thru MAF is tuned just like a intake. You may also make compensations to ignition timing for intake temp. The only downside is that you may have to keep your maf sensor clean if you leak oil from the turbo into the system.

If you want the sound get an intake and tune for that. It may not be as loud as a BOV but your car will run much better.

 

hope this works... here's the vid

 

is your garage a detached one?

 

Yes and with a natural gas infrared heater that I installed and connected to the house gas line myself. (I'm proud of that since I didn't know the first thing about it and got it all done approved on the first go)

 

sounds good man i likes. how much recirculation is it doing?

 

/\ well said!

 

Thanks. I want to explain why they are bad to people that are new to these cars. We understand the ECU in these cars better than ever with all the tuning and datalogging resources available today. It is not just some old wives tale that you shouldn't use them.

 

I wonder how one of those things sounds when fully recirculating.

 

Slightly louder than stock if any difference.
Also note that the common PSI limitation of the current stock BPV is 19-20psi. While plenty of boost and not what the WRX snail can typically handle "especially the 08"
There have been more than a few cases where the stock BPV leaked at anything above 16psi.

Might be why a bunch of people aren't hitting target boost. DynoFlash has recorded many of these occurences and may be something you would look into replacing even at stage 2 to a better fully recic model if yours is indeed leaking.

Not something we can really warranty for "I am leaking when I boost 17 or more"

 

Good point regarding target boost. Brings the Perrin map to mind, and that current thread where the guy hasn't seen anywhere near the expected psi.

 

How do you change the mode that the BOV/BPV is in? Is it an all or nothing sort of thing in that there are only 3 modes the unit can be in, or is it a spectrum where there are many different positions the unit can be in meaning that it will vent more or less to atmosphere, and more or less recirc depending on the setting? Does that make sense?

I ask because I want to get a better BPV at some point due to the weak stock unit (as mentioned in this thread), and GFB seems to make pretty solid products. I am generally anti-BOV, but who doesn't like a little noise-maker now and again, just for fun, you know? And if it can do both reliably (recirc, and vta), there's really no down side. Another reason I like this unit is that it doesn't stand out like many others.

 

The 3 settings are full recirc, 50/50, and full VTA. to put in full recir mode you plug the "trumpet" hole. for 50/50, you connect the trumpet and connect the other hose and for full VTA you block off the hose port. Pretty simple to use.

I also want to mention, that I drove around for almost a week on 50/50. As was previously noted by others, this makes the car bog down betweens shifts due to rich condition and really leaned out other times. My AFR ranged from 11.8 to 20.1. In full recirc I think the range was 12-14.

I have since gone back to full recirc even though the blow off sound was freaking awesome! Made alot of heads turn.

 

What were you messing with when you tried to close the hood?

 

I was positioning the plastic flap from the hood air scoop that hangs down at the top and behind the intercooler. I have the cusco front strut bar that it tends to catch on, so i need to guide it between the IC and the front edge of the strut bar

 

Maybe just heat it up with a hair drier and bend it a little. I have the same strut bar and mine doesn't catch at all.

 

sorry for bump,

but website says there are 17 positions... you can choose VTA, 50/50, 100% recirc or "ANYWHERE IN BETWEEN"

seems like a great product

 

Yeah I have the 50/50 GFB BOV and it is amazing. I am full stock right now, but I will go full recirc when i go stage 2. I am saving and skipping stage one lol.

 

MAY I SUGGEST, THE NEXT TIME YOU START YOUR CAR IN THE GARAGE ....OPEN THE GARAGE DOOR! OR YOU MAY PASS OUT AND DIE