Coming down to the wire. Need to decide bov or diverters

Fundguy1 · 12-05-2015, 01:26 PM

My build day is coming fast. I need to decide which way I want to go. Bov or diverters. I want a set of vrsf or mmp inlets. Unfortunately they aren't set up for diverters. I also want it silent. Not quiet. Like stock.

My options seem to be now:
-Quietest bov, still hear it though
-Bov with fitting for recirculation and hook it up to either a 2 foot hose to muffle sound or fit a bung onto inlets and hook it up
-Diverters and do above same as bov.

I have a charge pipe set up for stock diverters in hand. If I go bov I need to have it exchanged.

Which option would you recommend, why, and did I miss any options?
At the moment I'm leaning forge diverters with the open ended 2' pipe.

Thx

Rob@RBTurbo · 12-05-2015, 01:48 PM

If you decide on Forge diverters let me know as I have a brand new set of Forge N54 diverters in stock (anodized black). Never used nor even removed from box, but did open box to verify contents. About 2 months old. PM for great deal, can even package with a set of our new RB High Flow Inlets for additional cost. As a combination they'd be perfect for one another.

Thanks,
Rob

Fundguy1 · 12-05-2015, 02:18 PM

Thx

924er · 12-05-2015, 02:31 PM

I think TIAL is the least loudest. I hear that is louder with inlets. Still doest sound "ricer" like the HKS

Fundguy1 · 12-05-2015, 03:28 PM

OK. I want to minimize broadcasting I have modifications, but I know with fbo and stage2+ I'm still not going to sound stock. Just trying to keep it to people thinking maybe an intake and a chip.

Fundguy1 · 12-05-2015, 03:30 PM

Someone said active autoworks? Is tial the most quiet? Was thinking diverted and a hose or even putting something like a small cone air filter filled with loose foam over the BOV to muffle it.

Stucks · 12-05-2015, 03:56 PM

If you go for a bov, get either the tial q or the turbosmart race port. in all the blow off valve combinations ive tried on my car, those 2 are the least noisy.

Lshaw · 12-05-2015, 05:15 PM

I went from forge dv back to tial. I personally don't like or want the bov sound, but the dvs had many more connections where a leak could occur (all the silicone elbows and what now).

Tial is the most quiet of all the bovs.

dreyo27 · 12-05-2015, 05:25 PM

Why pick one or the other when you can have both? If you go with BOV and its to loud, you can always reconfigure in 5 min and have it be a diverter valve.

Kompact BMW Dual Port Kit
http://www.turbosmartusa.com/news/du...v-kit-for-bmws

This way you can have your cake and eat it too.

Fundguy1 · 12-06-2015, 12:45 AM

Looked at the above but still leaning forge with pipes. Any other ideas? Tial #2.

limitdown · 12-06-2015, 03:17 AM

I had Forge DV's and switched to a Tial Q BOV. The Forge's required a bit more maintenance as they got sticky often. The Tial Q BOV just required cleaning when I first installed it. It's been trouble-free since.
When I first installed it, I didn't know if the valve was working because it was so quiet.
To confirm that it was working, I had someone else had to step on the gas while I looked the valve with the hood open.

I recently put in RB's inlets, and the BOV sounds a bit different now. Previous, it made a sloshing whoosh sound. Now it makes more of a pew sound.

12-05-2015, 01:26 PM	#1
Fundguy1 Major General 2043 Rep 8,339 Posts Drives: 335 e93 Join Date: Aug 2014 Location: Orlando, fl iTrader: (0)	Coming down to the wire. Need to decide bov or diverters My build day is coming fast. I need to decide which way I want to go. Bov or diverters. I want a set of vrsf or mmp inlets. Unfortunately they aren't set up for diverters. I also want it silent. Not quiet. Like stock. My options seem to be now: -Quietest bov, still hear it though -Bov with fitting for recirculation and hook it up to either a 2 foot hose to muffle sound or fit a bung onto inlets and hook it up -Diverters and do above same as bov. I have a charge pipe set up for stock diverters in hand. If I go bov I need to have it exchanged. Which option would you recommend, why, and did I miss any options? At the moment I'm leaning forge diverters with the open ended 2' pipe. Thx __________________ '08 e93 AW 335i 6MT,Vargas Stg 2+ 20T clipped,VRSF catless dps & 7"FMIC,ER chargepipe&Tial, MMP inlets&outlets,Motiv Stg 2 fuel rail&dual disc clutch/fly, JB4G5,MHD w/Motiv tune,Fuel-it Stg 3 LPFP,Wavetrac LSD w/lockdown, KwV2,M3(Strut brace,frt control arms,steering wheel)AKE blk sub bush,re11 245/305,19x8.5et30&19x11et43,SmartTop,RE trans mounts,Msport rear bump & skirts,15%tint,ZSP knob,Stoptech rotors,241k miles
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12-05-2015, 02:18 PM	#3
Fundguy1 Major General 2043 Rep 8,339 Posts Drives: 335 e93 Join Date: Aug 2014 Location: Orlando, fl iTrader: (0)	Thx
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12-05-2015, 02:31 PM	#4
924er Colonel 351 Rep 2,049 Posts Drives: e92 335i '10 Join Date: Feb 2014 Location: Socal iTrader: (0)	I think TIAL is the least loudest. I hear that is louder with inlets. Still doest sound "ricer" like the HKS __________________ '10 e92 N54 DCI intakes, ER chargepipe, TIAL BOV, VRSF 5in FMIC, BMS Downpipes COBB e30
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12-05-2015, 03:28 PM	#5
Fundguy1 Major General 2043 Rep 8,339 Posts Drives: 335 e93 Join Date: Aug 2014 Location: Orlando, fl iTrader: (0)	OK. I want to minimize broadcasting I have modifications, but I know with fbo and stage2+ I'm still not going to sound stock. Just trying to keep it to people thinking maybe an intake and a chip.
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12-05-2015, 03:30 PM	#6
Fundguy1 Major General 2043 Rep 8,339 Posts Drives: 335 e93 Join Date: Aug 2014 Location: Orlando, fl iTrader: (0)	Someone said active autoworks? Is tial the most quiet? Was thinking diverted and a hose or even putting something like a small cone air filter filled with loose foam over the BOV to muffle it.
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12-05-2015, 01:48 PM	#2
Rob@RBTurbo Lieutenant Colonel 390 Rep 1,571 Posts Drives: '08 335I AT, '14 M6 DCT Join Date: Jan 2008 Location: St. Louis, MO iTrader: (5)	If you decide on Forge diverters let me know as I have a brand new set of Forge N54 diverters in stock (anodized black). Never used nor even removed from box, but did open box to verify contents. About 2 months old. PM for great deal, can even package with a set of our new RB High Flow Inlets for additional cost. As a combination they'd be perfect for one another. Thanks, Rob
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12-05-2015, 03:56 PM	#7
Stucks Lieutenant Colonel 180 Rep 1,911 Posts Drives: 2017 F30 340i Xdrive Join Date: Oct 2010 Location: Montgomery County, MD iTrader: (12)	If you go for a bov, get either the tial q or the turbosmart race port. in all the blow off valve combinations ive tried on my car, those 2 are the least noisy. __________________ Current: 2017 F30 340i xdrive Previous: 2008 e92 335i coupe: RB turbos, mach 116 race fuel, methanol, alot of boost. Previous: 2003 Honda Accord V6 coupe: AEM V2, zex 75 wet shot (sold)
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12-05-2015, 05:15 PM	#8
Lshaw Lieutenant Colonel 254 Rep 1,872 Posts Drives: 09 335i 6mt Join Date: Oct 2007 Location: NYC/Pittsburgh iTrader: (21)	I went from forge dv back to tial. I personally don't like or want the bov sound, but the dvs had many more connections where a leak could occur (all the silicone elbows and what now). Tial is the most quiet of all the bovs. __________________ 07 335xi (2007-2010) 08 Legacy Spec B (08-) 09 335i (2010-) 15 X5 xdrive 35i (2015-) 17 Forester XT (2016-)
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12-05-2015, 05:25 PM	#9
dreyo27 First Lieutenant 93 Rep 322 Posts Drives: 2007 335i e92 Join Date: Aug 2015 Location: Sacramento CA iTrader: (3)	Why pick one or the other when you can have both? If you go with BOV and its to loud, you can always reconfigure in 5 min and have it be a diverter valve. Kompact BMW Dual Port Kit http://www.turbosmartusa.com/news/du...v-kit-for-bmws This way you can have your cake and eat it too.
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12-06-2015, 12:45 AM	#10
Fundguy1 Major General 2043 Rep 8,339 Posts Drives: 335 e93 Join Date: Aug 2014 Location: Orlando, fl iTrader: (0)	Looked at the above but still leaning forge with pipes. Any other ideas? Tial #2.
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12-06-2015, 03:17 AM	#11
limitdown First Lieutenant 187 Rep 337 Posts Drives: 2007 335i E93 Join Date: Jul 2015 Location: Location iTrader: (0)	I had Forge DV's and switched to a Tial Q BOV. The Forge's required a bit more maintenance as they got sticky often. The Tial Q BOV just required cleaning when I first installed it. It's been trouble-free since. When I first installed it, I didn't know if the valve was working because it was so quiet. To confirm that it was working, I had someone else had to step on the gas while I looked the valve with the hood open. I recently put in RB's inlets, and the BOV sounds a bit different now. Previous, it made a sloshing whoosh sound. Now it makes more of a pew sound.
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