I believe that is correct, you would use somthing like this from Hahn:

Link:
http://www.turbotechracing.com/produ...idproduct=5228

 

I run a synapse synchronic BOV on my turbo cobalt. I have never heard a hint of turbo lsurge.

 

So one person gave me one answer and the other gave me another answer lol this is confusing

 

sure....
it's a great design don't get me wrong.... but the TiAl 50mm is bad ass, as is the Hahn one (I currently run the Hahn). no surge, opens at any boot level, andit's adjustable.

 

Have not had much experience with the Tial, but I will agree with the Hahn, we have seen it in action and it works very well!

 

Tial is great product but if you dont't let off the gas fully, the vacuum required to open thev BOV will not be achieved causing compressor surge.

As far as the Hahn. It seems like a good product but I can't for the life of me figure out why you need adjustability?

 

that's why you run a lighter spring.
as for adjustability... one BOV fits all, no need to swap out springs. You can adjust it for your own setup (like myself) No matter what turbo, motor etc, you an make it work with a simple twist.... can't beat that.

 

im getting the synapses f the hks one, synapses is close tothe same cost and seems to be a better BOV

 

That's a great price!

Don't forget to add the option for the Anti-Stall Valve kit as well.

Technically you don't have to

 

Do you have a link? or a part number?

 

I had it in the first post when you asked for part #'s

Part #: SB001.5A

 

Didnt see it

Here is a link many should check out:

http://www.youtube.com/watch?v=M2--IIMSa9A

 

so if you block off the factory one and put this one on you won't lose any performance or anything right? And also will this pretty much eliminate your NLS?

 

That's what's great about the Synapse. There are no adjustments ever. Hook it up and its perfect for any setup. It's all in how it's designed.

Most MAF cars will run rich when you shift with a VTA BOV, unless you're tuned for it. Even then, a MAF if tricky to tune for that. MAP sensors FTW.

NLS is computer controlled and this as no effect on it.

 

Added as an upgrade option.

 

TTR is awesome. You have won my business. I'll be ordering this soon

You guys work harder than a fat chick trying to get laid at a frat party

 

 

I posted that earlier too

Sweet! I'll order as soon as I get my car back and have the $$ on hand

 

You know I totally forgot to mention to all the people that want/are running a VTA BOV have to relocate their MAF sensor AFTER the BOV and have it tuned properly. Or you can use a recirc BOV like the Synchronic and recirculate it back to where it normal dumps.

If you want to VTA without relocating your MAF then use the Synchronic BOV with the anti-stall kit. You can't just use any BOV without having to relocate the MAF.

Otherwise, you are really messing up the fuel trims and are probably running too rich

 

I am doing it right now with 0 problems. the computer is so fast to react to commanded fuel that the .01 of sec that it goes rich is not nearly enough to cause and drivability concerns in my car....

 

You may not notice it in drivability but it's not going to be good in the long run.

Think of it this way:

(Stock setup)

1. Air enters thru the intake and MAF sensor reads how much fuel it needs.
2. Goes thru compressor inlet and out the hot side of the charge piping
3. Thru hot side of charge piping and into the intercooler
4. Thru intercooler and out to the cold side of charge piping and into the intake manifold

Notice no air being released!

Now (with VTA BOV)

1. Air enters thru the intake and MAF sensor reads how much fuel it needs.
2. Goes thru compressor inlet and out the hot side of the charge piping
3. Thru hot side of charge piping and some air vents thru BOV then enters the intercooler
4. Thru intercooler and out to the cold side of charge piping and into the intake manifold

That air lost is not being taken into account because the MAF was before the BOV. Now if the MAF is after the BOV then you wouldn't have to take into account that air that was released.

Hope this helps.

 

the lost air is being taken into account via the wideband. the computer is very quick at adjusting fuel for whatever is commanded. I have no concerns with this setup nor do I see any long term concerns. this is not your everyday maf car. with a maf,map,ita/map, and wideband the car is very good at hitting commanded a/f. you see this while tuning as well. very little change has been needed with my maf tables because the car is hitting commanded a/f within 2-3% or closer to redline. the car also hits this range with a bov within less than a .5sec.

VTA BOV FTW - recirc. FTL

 

Dejon has been in the DSM world for quite awhile... their products seem top notch... and I know someone who will be getting their intake and charge piping here shortly!

Don't downgrade someone just because they don't have their name plastered on everything!

 

From my understanding from well known tuners, in order to run a VTA BOV a blow-thru MAF is needed. I am just trying to pass this info along.

QFT!!

 

I'm a big fan of Dejon their piping looks hot, and top notch! I like the short ram intake, vs. the cold air, and for the price... it just can't be beat!