Dedicated vacuum port >Tial BOV

07tundra · 03-18-2014, 07:57 PM

Just finished this up today in hopes to stop the fluttering I get from my Tial bov. Pretty straight forward, in the pic there I am finishing up sealing it.....wouldn't want a vacuum leak.
I still kept the oem port for my boost gauge.

Sfvalley135i · 03-18-2014, 08:39 PM

I thought this would fix my flutter... After tapping a new nipple, I took apart my tial bov and cleaned it. After everything was buttoned up there wasn't any flutter! I was happy as can be... A week or so later the flutter at low rpm/boost has come back.

Now I'm going to try to polish the bov piston and or oil it. If that still does not help I'll start clipping the spring.

07tundra · 03-18-2014, 08:43 PM

Quote:

Originally Posted by Sfvalley135i

I thought this would fix my flutter... After tapping a new nipple, I took apart my tial bov and cleaned it. After everything was buttoned up there wasn't any flutter! I was happy as can be... A week or so later the flutter at low rpm/boost has come back.

Now I'm going to try to polish the bov piston and or oil it. If that still does not help I'll start clipping the spring.

What size did you go back in with?

AlpineSwift · 03-18-2014, 09:34 PM

The spring is too stiff and or your engine has a shit load of carbon deposits preventing the valve from pulling the right vacuum pressure. I ended up dropping down to a white spring to get the right vacuum for my altitude and kill the flutter.

Sfvalley135i · 03-18-2014, 09:35 PM

Quote:

Originally Posted by 07tundra

What size did you go back in with?

1/4"

And just had walnut cleaning this past weekend too...

07tundra · 03-18-2014, 09:58 PM

Quote:

Originally Posted by AlpineSwift

The spring is too stiff and or your engine has a shit load of carbon deposits preventing the valve from pulling the right vacuum pressure. I ended up dropping down to a white spring to get the right vacuum for my altitude and kill the flutter.

Ive had the blasting done so that I don't think is related. I'm at 5500ft

AlpineSwift · 03-18-2014, 10:18 PM

Quote:

Originally Posted by 07tundra

Ive had the blasting done so that I don't think is related. I'm at 5500ft

What spring are you running? The yellow spring is too much for our altitudes. Max you should be running is the unpainted spring which falls between a yellow and a white.

07tundra · 03-19-2014, 09:57 PM

Quote:

Originally Posted by AlpineSwift

What spring are you running? The yellow spring is too much for our altitudes. Max you should be running is the unpainted spring which falls between a yellow and a white.

I still have the same spring It came with

AlpineSwift · 03-19-2014, 11:28 PM

So what you're saying is you don't know what spring is in the BOV.

Tony@vargasturbotech · 03-20-2014, 06:55 AM

Spring is too stiff, go with black spring, shim it til its just closed at idle, use the dedicated port. Exactly what we did with the shop car, BOV then works as it should. The spring they recommend is too strong 80% of the time.

HeavyMetalRocker · 03-20-2014, 08:18 AM

Quote:

Originally Posted by Vargasturbotech

Spring is too stiff, go with black spring, shim it til its just closed at idle, use the dedicated port. Exactly what we did with the shop car, BOV then works as it should. The spring they recommend is too strong 80% of the time.

I never got a solid answer before from anyone... so is the Tial supposed to be closed under all idle circumstances?

HouseN54 · 03-20-2014, 09:25 AM

Quote:

Originally Posted by HeavyMetalRocker

I never got a solid answer before from anyone... so is the Tial supposed to be closed under all idle circumstances?

yes i have a tial and its closed at idle but does release boost at say 2-3 psi, its quite but you can hear it but loud as fuck under 17psi lol

e90Mark · 03-20-2014, 11:41 AM

Quote:

Originally Posted by 07tundra

I still have the same spring It came with

Check the box, I didn't know either.. Will tell you.

I have the 11PSI spring, aka Yellow, and am probably gonna switch out to Unpainted.

07tundra · 03-20-2014, 05:39 PM

Quote:

Originally Posted by AlpineSwift

What spring are you running? The yellow spring is too much for our altitudes. Max you should be running is the unpainted spring which falls between a yellow and a white.

So what spring are you running

AlpineSwift · 03-20-2014, 05:52 PM

Quote:

Originally Posted by 07tundra

Quote:

Originally Posted by AlpineSwift

What spring are you running? The yellow spring is too much for our altitudes. Max you should be running is the unpainted spring which falls between a yellow and a white.

So what spring are you running

I have a white spring right now. Might go to unpainted since I just had walnut blasting done today.

07tundra · 03-20-2014, 06:15 PM

Quote:

Originally Posted by e90Mark

Check the box, I didn't know either.. Will tell you.

I have the 11PSI spring, aka Yellow, and am probably gonna switch out to Unpainted.

Like I keep boxes

03-18-2014, 07:57 PM	#1
07tundra Lieutenant Colonel 119 Rep 1,525 Posts Drives: 8.1L Chevy 2500hd Join Date: Jan 2012 Location: New Mexico iTrader: (9)	Dedicated vacuum port >Tial BOV Just finished this up today in hopes to stop the fluttering I get from my Tial bov. Pretty straight forward, in the pic there I am finishing up sealing it.....wouldn't want a vacuum leak. I still kept the oem port for my boost gauge. Attached Images
	Appreciate 0 Tweet Quote

03-18-2014, 08:39 PM	#2
Sfvalley135i Second Lieutenant 53 Rep 227 Posts Drives: 135i Join Date: Aug 2013 Location: SoCal iTrader: (5)	I thought this would fix my flutter... After tapping a new nipple, I took apart my tial bov and cleaned it. After everything was buttoned up there wasn't any flutter! I was happy as can be... A week or so later the flutter at low rpm/boost has come back. Now I'm going to try to polish the bov piston and or oil it. If that still does not help I'll start clipping the spring.
	Appreciate 0 Quote

03-18-2014, 09:34 PM	#4
AlpineSwift Colonel 77 Rep 2,114 Posts Drives: 2008 335Xi Coupé Join Date: Feb 2010 Location: Castle Rock, CO iTrader: (3)	The spring is too stiff and or your engine has a shit load of carbon deposits preventing the valve from pulling the right vacuum pressure. I ended up dropping down to a white spring to get the right vacuum for my altitude and kill the flutter. __________________ E92 '08 335Xi 6AT - Cobb AP3 Tuned by MAC Autosport, Original Prototype Xi DOCRace 6266 Single Turbo Swap, VRSF CP w/Synapse BOV, VRSF 7" FMIC, BMS Cowl, H&R Coilovers, Renn Motorsport RS-51's, Stoptech Stage 2 Slotted, xHP Stage 3, Earl's Racing Oil Cooler, Turner Boost Gauge, M3 Lip Spoiler. Standing Mile Record Holder for Xi over a mile high: 168.2MPH @ 5512'; The Colorado Mile hosted by The US Mile.
	Appreciate 0 Quote

03-19-2014, 11:28 PM	#9
AlpineSwift Colonel 77 Rep 2,114 Posts Drives: 2008 335Xi Coupé Join Date: Feb 2010 Location: Castle Rock, CO iTrader: (3)	So what you're saying is you don't know what spring is in the BOV. __________________ E92 '08 335Xi 6AT - Cobb AP3 Tuned by MAC Autosport, Original Prototype Xi DOCRace 6266 Single Turbo Swap, VRSF CP w/Synapse BOV, VRSF 7" FMIC, BMS Cowl, H&R Coilovers, Renn Motorsport RS-51's, Stoptech Stage 2 Slotted, xHP Stage 3, Earl's Racing Oil Cooler, Turner Boost Gauge, M3 Lip Spoiler. Standing Mile Record Holder for Xi over a mile high: 168.2MPH @ 5512'; The Colorado Mile hosted by The US Mile.
	Appreciate 0 Quote

03-20-2014, 06:55 AM	#10
Tony@vargasturbotech Banned 137 Rep 1,202 Posts Drives: N54 Join Date: Aug 2012 Location: USA iTrader: (0)	Spring is too stiff, go with black spring, shim it til its just closed at idle, use the dedicated port. Exactly what we did with the shop car, BOV then works as it should. The spring they recommend is too strong 80% of the time.
	Appreciate 0 Quote