VTA ...

[Lex]

I'm just going to leave this log here. Full VTA, stock BPV. This is all for now.

For those tuning with me, I apologize that I am a day behind - but this is starting to look like it might be worth it.

**Edit**

Video with the VTA feature in action:

Stratified Guardian Angel Vent To Atmosphere Feature - YouTube

Stratified Guardian Angel Vent To Atmosphere Feature - YouTube

[TRSpeed]

Hey Lex! I'm on my phone but cliff notes?

This person just doesn't have a recirc tube on the intake/tip to make the stock BPV vta?

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[Lex]

Originally Posted by TRSpeed Hey Lex! I'm on my phone but cliff notes? This person just doesn't have a recirc tube on the intake/tip to make the stock BPV vta? Sent from my DROID4 using Tapatalk 2

I won't spoil it yet - I want people to take a look at the log. This is my car. This is a stock BPV. This BPV is fully vented to atmosphere.

[LatinKraze]

Damn, no me gusta. Subbed

[86AmishMs3]

I'm not seeing anything out of the ordinary...maybe I was too quick looking over the log.

[TRSpeed]

Tell me I needs teh rice!

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[Lex]

Any one of you guys try and run the OEM BPV VTA? Or a piston type valve VTA?

Originally Posted by 86azms3 I'm not seeing anything out of the ordinary...

... and that's exactly the point

[TRSpeed]

Soooooo. Vta is good! Sorry if I'm being retarted I'm just doing my last minute reading before I knock out.


Oo and i can try the stock BPV. I hate my TS BPV non dual port
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[Hamilton69]

i have been running the HKS ssqxfucsheicchser valve full vta for a while

[86AmishMs3]

I run my turbosmart hybrid hooked up to recirc and vent. Everything on my logs look good. Have that bitch down tight so i haz a little turkey under my hood.

[x09MS3GT]

the only thing i noticed in that long....long...long log, was that a couple times after you goosed it , when you let off the throttle it got really rich, down into the low 9:1's for a split second or two.....other then that everything does look normal.

[Lex]

Welp, how for those running piston type pull valves VTA such as the OEM, Forge, Greddy, etc. it's obvious they leak at idle/part throttle or need to be tightened down - sometimes to the point of surge.

I used the OEM BPV above since it REALLY leaks at idle and part throttle. It leaks so much that if you run it VTA your car will almost not run it's so rich. Go ahead and try.

Now the log above ... that's done with the OEM, unmodified BPV, running VTA. Check out the STFTs and AFRs at idle and in other areas where piston type VTA valves crack open and leak.

Added benefit to all this - run any valve VTA and faster spool and response.

@Daddy Chinkus

[ms3rick]

So we can go rice!?

[86AmishMs3]

Originally Posted by Lex Welp, how for those running piston type pull valves VTA such as the OEM, Forge, Greddy, etc. it's obvious they leak at idle/part throttle or need to be tightened down - sometimes to the point of surge. I used the OEM BPV above since it REALLY leaks at idle and part throttle. It leaks so much that if you run it VTA your car will almost not run it's so rich. Go ahead and try. Now the log above ... that's done with the OEM, unmodified BPV, running VTA. Check out the STFTs and AFRs at idle and in other areas where piston type VTA valves crack open and leak. Added benefit to all this - run any valve VTA and faster spool and response. @Daddy Chinkus

You're contradicting yourself...or I'm confused by your words? Piston types like oem, forge, greddy, turbosmart, should not leak at idle.

[ericdebruyn1]

the car will stall out or try to at least i was going to do this just to give it the woosh sound but decided not to because it sounded like it had a bad vacume leak

[ms6forthewin]

what he meant is "the supposedly recirc bpv = piston type pull valves" is somehow less harmful than the actual vta bov. and you can run it without a problem

[StayBroke]

Ran my stock bpv vta, forge v1 vta, synapse vta, and the hks vta.

The only ones that worked where the stock bpv and the hks.

The forge stayed open at idle no matter what spring or shim combo. When you where cruising and let off the gas the rpms would go to about 450 to 500 and bounce like a mofo and then settle down.

The synapse....shit that bitch stay wide the hell open so its impossible to run vta on that unless you get the anti stall kit.

I have a nitch for testing this kinds of things and i am running the synapse bov recirced and the hks vta at the same time.

[MS3-a(sore)ASS-rex]

That is fucking WEIRD I thought for sure there'd be some form of vacuum leak with the OEM BPV running vta.

Running rich between shifts always happens with a mass airflow car when running vta. It releases compensated air so you just dump some fuel in, ran an HKS that way for years and I'll be running my Tial Q the same way when I get it.

[Lex]

Let's just say that there may be a new feature coming to the Guardian Angel that addresses the leak issue with BPVs. Testing underway.

[EdgeAutosport.com]

Ive been running vta for over a year now with great success. We had a local run vta with this stock bpv and it worked like a charm and didnt sound bad at all.

[manila]

Subbed for my car to sound like rice ROCKET

[djuosnteisn]

Originally Posted by MS3-a(sore)ASS-rex That is fucking WEIRD I thought for sure there'd be some form of vacuum leak with the OEM BPV running vta.

The intercooler pipes never see vacuum, only boost. There is always a positive pressure ratio across the compressor housing, so even at light loads, the pressure in the pipes will necessarily be higher than that in the TIP (which for all intents and purposes is ambient pressure at light loads).

The vacuum resides on the other side of the throttle body (and the TIP at higher loads).

Originally Posted by eric@edgeautosport Ive been running vta for over a year now with great success. We had a local run vta with this stock bpv and it worked like a charm and didnt sound bad at all.

Who did this? That's a horrible idea lol.


Pull types, if designed for recirc, will typically open under vacuum, cause the spring isn't stiff enough to hold the valve shut when vac from the IM is pulling it up. If you look close at the dual port valves like the turbosmart, you'll notice the relief ports are slots, and the VTA port is slightly higher than the recirc port. So when running 50/50 mode, vac in the IM will pull that valve up just enough to actually open the recirc port, but not enough to open the VTA port.

Interesting application idea Alex, removing the vac on shifts and idle. Very cool

[EdgeAutosport.com]

Diego was his name and he was in Santa Fe when he did it. He said his car ran fine without any issue

[ms3rick]

wonder what he used to clamp off the recirc hose.

[rfinkle2]

@Dano, told you Dj was a ricer. LOL.

(100% kidding DJ, I told Dano you run vta and I don't think he believed me. LOL).

[TRSpeed]

So do we just put a butt plug in the recirc tube or what lol

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[StayBroke]

i put a pvc plug in mine when i was vta.

[Roddiy]

Originally Posted by Lex Welp, how for those running piston type pull valves VTA such as the OEM, Forge, Greddy, etc. it's obvious they leak at idle/part throttle or need to be tightened down - sometimes to the point of surge. I used the OEM BPV above since it REALLY leaks at idle and part throttle. It leaks so much that if you run it VTA your car will almost not run it's so rich. Go ahead and try. Now the log above ... that's done with the OEM, unmodified BPV, running VTA. Check out the STFTs and AFRs at idle and in other areas where piston type VTA valves crack open and leak. Added benefit to all this - run any valve VTA and faster spool and response. @Daddy Chinkus

How fast Spool/Response are we talking?

[djuosnteisn]

Originally Posted by rfinkle2 @Dano, told you Dj was a ricer. LOL. (100% kidding DJ, I told Dano you run vta and I don't think he believed me. LOL).

Lolol, i've been VTA in my 6 since 2008 i think. I love it.

[nycMS3]

This thread made me so happy


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[Lex]

Originally Posted by Roddiy How fast Spool/Response are we talking?

Will have to quantify this before I throw anything out there.

Because the valve is no longer open during low load conditions transitioning to a high load condition while staying closed prevents any of the charge air from being bled off during this transition period. This is a benefit whether the valve is VTA or recirculating.

[captain slow]

Subbed for sure. Now I need to research to find out what you guys are talking about with the piston type vs pull type. And what mine is. I love a little VTA rice, hence the Dual Port.

[rfinkle2]

Originally Posted by djuosnteisn Lolol, i've been VTA in my 6 since 2008 i think. I love it.

I don't mean to derail the thread, but I love all that shit too. Carbon Fiber, body kits, VTA,,,I have an inner ricer.

This thread is putting a smile on @StayBroke's face. He LOVES VTA.

[djuosnteisn]

Eager to see results. I always thought the second the t-body opened and the manifold vacuum dropped, the bpv would seal, perhaps not instantly, but quite fast. It would be extremely interesting to see hard data on the differences

[PapaSmurf]

Ive been vta with my HKS since ive owned an aftermarket bpv/bov. So coming up on 3 years...Even with the stock airbox! haha

I had to fulfill my ricer boner.

[StayBroke]

Honestly, synapse bov has the fastest responce i have ever seen(in person).

@captain slow, Piston type bov is one like the dual port where the valve is being pulled up

A pull type is what it is call, Like a hks where the valve moves left to right.

[BlueStreak]

30 users viewing this page right now. Mark today as the day MSF went rice.

I'm giddy. I'm doing this tomorrow.

[dooderek]

i want a share in this idea!!!

[Roddiy]

Originally Posted by BlueStreak 30 users viewing this page right now. Mark today as the day MSF went rice. I'm giddy. I'm doing this tomorrow.

FUUUUU.


Now we need NOS Stickers and big wings, for speed yo!!!

[rfinkle2]

LOL @ the number of people viewing this thread.