Cheap Diverter Valve option

vinny335xi · 11-22-2020, 09:23 AM

Has anyone tried these diverter valves. They are 25mm and significantly cheaper than other options. Springs are also included. They seem to be good quality just not sure if anyone has used on an n54.

https://www.amazon.com/RKX-Precision.../dp/B01L0F2LD2

TiAgAu · 11-22-2020, 02:28 PM

Quote:

Originally Posted by vinny335xi

Has anyone tried these diverter valves. They are 25mm and significantly cheaper than other options. Springs are also included. They seem to be good quality just not sure if anyone has used on an n54.

https://www.amazon.com/RKX-Precision.../dp/B01L0F2LD2

$44.95 that's still overpriced. Pretty sure these are the same thing for less than $10

https://www.aliexpress.com/item/4001039080586.html?

https://www.aliexpress.com/item/33005451243.html?

https://www.aliexpress.com/item/4001039149248.html?

Smgs1992 · 11-22-2020, 08:01 PM

Whats wrong with using the stock ones?

stewbets · 11-22-2020, 08:04 PM

Not enough bling!

vinny335xi · 11-22-2020, 09:36 PM

Quote:

Originally Posted by Smgs1992

Whats wrong with using the stock ones?

They can sometimes leak under high boost or from high mileage.

Emilime75 · 11-22-2020, 10:51 PM

Take one for the team and let us know how they work out.

Bimmer_Engineer · 11-23-2020, 06:03 AM

What are the symptoms of failing diverter valves?

Smgs1992 · 11-23-2020, 06:53 AM

Quote:

Originally Posted by vinny335xi

They can sometimes leak under high boost or from high mileage.

Mine are holding up to 20psi just fine

_N54 · 11-23-2020, 08:35 AM

I have these:

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

They work. I keep them at the stiffest setting and it's vented to atmosphere. My OEM were leaking so I replaced them with these until I decide on which blow off valve I want, but I purchased them after watching this:

Bimmer_Engineer · 11-23-2020, 10:19 AM

Can a failing diverter cause whining? I have a whine coming from that side of the engine under boost and I can't find any leaks...

vinny335xi · 01-10-2021, 09:21 PM

So I just installed these rkx diverter valves paired with an arm charge pipe. So far I am very impressed. I vented them to atmosphere and the blow off is much louder than stock. Car also feels much smoother and holds boost great. For under $200 i think it was well worth it.

guop · 01-11-2021, 07:53 AM

Quote:

Originally Posted by Bimmer_Engineer

Can a failing diverter cause whining? I have a whine coming from that side of the engine under boost and I can't find any leaks...

Yes

guop · 01-11-2021, 03:21 PM

Quote:

Originally Posted by vinny335xi

So I just installed these rkx diverter valves paired with an arm charge pipe. So far I am very impressed. I vented them to atmosphere and the blow off is much louder than stock. Car also feels much smoother and holds boost great. For under $200 i think it was well worth it.

What spring did you use and how stiff ?

lookalikehuuh · 01-11-2021, 05:01 PM

I use these https://www.ecstuning.com/b-forge-pa...mdvbm35-c~frg/

They aren't cheap but they are solid built and have had no problems in like 7+ years

Bimmer_Engineer · 01-11-2021, 07:00 PM

Were you having issues that caused you to change them?

vinny335xi · 01-12-2021, 09:35 PM

Quote:

Originally Posted by guop

Quote:

Originally Posted by vinny335xi

So I just installed these rkx diverter valves paired with an arm charge pipe. So far I am very impressed. I vented them to atmosphere and the blow off is much louder than stock. Car also feels much smoother and holds boost great. For under $200 i think it was well worth it.

What spring did you use and how stiff ?

The kit came with 3 springs i used the softest one with one spacer. According to the instructions thats what's needed if your running around 17lbs boost. I'm also on a mhd stage 2 93 map

vinny335xi · 01-12-2021, 09:39 PM

Quote:

Originally Posted by Bimmer_Engineer

Were you having issues that caused you to change them?

I didn't have any issues but thought i might as well change them if i was getting a new charge pipe.

Bimmer_Engineer · 01-13-2021, 08:44 AM

FWIW I just decided to order new OE valves. They're $70 each from FCP euro with the hoses and they've worked fine for 14 years on my N54...

I'll let ya'll know if they fix my whine...

Bimmer_Bro · 01-13-2021, 10:27 AM

Quote:

Originally Posted by vinny335xi

So I just installed these rkx diverter valves paired with an arm charge pipe. So far I am very impressed. I vented them to atmosphere and the blow off is much louder than stock. Car also feels much smoother and holds boost great. For under $200 i think it was well worth it.

I vent my forge dv's to atmosphere like this. However you should put some small breather filters where the DVs exhale from. You will get dirt in there and it will score the internal piston causing pre-mature wear and eventually seize up.

guop · 01-18-2021, 06:42 PM

Quote:

Originally Posted by ///S58

I have these:

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

They work. I keep them at the stiffest setting and it's vented to atmosphere. My OEM were leaking so I replaced them with these until I decide on which blow off valve I want, but I purchased them after watching this:

I ended up ordering the same ones!
They sound great, just not sure if I have them right enough. How tight are yours?

_N54 · 01-18-2021, 07:42 PM

Quote:

Originally Posted by guop

Quote:

Originally Posted by ///S58

I have these:

https://www.amazon.com/gp/product/B0...UTF8&psc=1

They work. I keep them at the stiffest setting and it's vented to atmosphere. My OEM were leaking so I replaced them with these until I decide on which blow off valve I want, but I purchased them after watching this:

I ended up ordering the same ones!
They sound great, just not sure if I have them right enough. How tight are yours?

They were all the way down hand tight, but I have a tial bov now.

guop · 01-18-2021, 09:40 PM

Quote:

Originally Posted by ///S58

They were all the way down hand tight, but I have a tial bov now.

Were you on stock turbo set up? Did they hold up well until you switched to a BOV?
I have mine about 4 full turns from fully tight but wasn’t sure if that was how they should be or not

11-22-2020, 09:23 AM	#1
vinny335xi New Member 3 Rep 6 Posts Drives: 2008 335xi e90 Join Date: Apr 2019 Location: Long Island iTrader: (0)	Cheap Diverter Valve option Has anyone tried these diverter valves. They are 25mm and significantly cheaper than other options. Springs are also included. They seem to be good quality just not sure if anyone has used on an n54. https://www.amazon.com/RKX-Precision.../dp/B01L0F2LD2
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11-22-2020, 08:01 PM	#3
Smgs1992 Captain 720 Rep 946 Posts Drives: 2007 bmw 335i Join Date: Apr 2020 Location: Cincinnati ohio iTrader: (0)	Whats wrong with using the stock ones? __________________ 07 E92 335i 6MT, MMP inlets, DCI, VRSF 7.5 competition intercooler, VRSF catless downpipes, VRSF chargepipe, 335is clutch, Vader Solutions stage 2 LPFP, MHD stage 2+, Hawk HPS 5.0 pads, R1 Concepts drilled slotted rotors, TSW Nurburgring 19x8 19x9.5
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11-22-2020, 08:04 PM	#4
stewbets Captain 449 Rep 823 Posts Drives: '08 335xi, '04 545i Join Date: Sep 2019 Location: Dayton, OH iTrader: (0)	Not enough bling!
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11-22-2020, 10:51 PM	#6
Emilime75 Colonel 1209 Rep 2,476 Posts Drives: 2010 335i E92 LeMans Blue Join Date: Dec 2017 Location: Merica! iTrader: (1)	Take one for the team and let us know how they work out.
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11-23-2020, 06:03 AM	#7
Bimmer_Engineer Lieutenant Colonel 1044 Rep 1,667 Posts Drives: 2007 335i Join Date: May 2018 Location: Louisiana iTrader: (0) Garage List 2008 Porsche Boxster [0.00] 2016 Mercedes Benz ... [0.00] 2007 BMW 335i [9.50]	What are the symptoms of failing diverter valves?
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11-23-2020, 08:35 AM	#9
_N54 Captain 300 Rep 884 Posts Drives: 335d Join Date: Mar 2020 Location: USA iTrader: (0)	I have these: https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1 They work. I keep them at the stiffest setting and it's vented to atmosphere. My OEM were leaking so I replaced them with these until I decide on which blow off valve I want, but I purchased them after watching this: __________________ 2013 335is - sold 2011 335d
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11-23-2020, 10:19 AM	#10
Bimmer_Engineer Lieutenant Colonel 1044 Rep 1,667 Posts Drives: 2007 335i Join Date: May 2018 Location: Louisiana iTrader: (0) Garage List 2008 Porsche Boxster [0.00] 2016 Mercedes Benz ... [0.00] 2007 BMW 335i [9.50]	Can a failing diverter cause whining? I have a whine coming from that side of the engine under boost and I can't find any leaks...
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01-10-2021, 09:21 PM	#11
vinny335xi New Member 3 Rep 6 Posts Drives: 2008 335xi e90 Join Date: Apr 2019 Location: Long Island iTrader: (0)	So I just installed these rkx diverter valves paired with an arm charge pipe. So far I am very impressed. I vented them to atmosphere and the blow off is much louder than stock. Car also feels much smoother and holds boost great. For under $200 i think it was well worth it. Attached Images
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01-11-2021, 05:01 PM	#14
lookalikehuuh Major 700 Rep 1,227 Posts Drives: 2006 330i, 2007 335i Join Date: Sep 2014 Location: San Diego, CA iTrader: (0)	I use these https://www.ecstuning.com/b-forge-pa...mdvbm35-c~frg/ They aren't cheap but they are solid built and have had no problems in like 7+ years
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01-11-2021, 07:00 PM	#15
Bimmer_Engineer Lieutenant Colonel 1044 Rep 1,667 Posts Drives: 2007 335i Join Date: May 2018 Location: Louisiana iTrader: (0) Garage List 2008 Porsche Boxster [0.00] 2016 Mercedes Benz ... [0.00] 2007 BMW 335i [9.50]	Were you having issues that caused you to change them?
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01-13-2021, 08:44 AM	#18
Bimmer_Engineer Lieutenant Colonel 1044 Rep 1,667 Posts Drives: 2007 335i Join Date: May 2018 Location: Louisiana iTrader: (0) Garage List 2008 Porsche Boxster [0.00] 2016 Mercedes Benz ... [0.00] 2007 BMW 335i [9.50]	FWIW I just decided to order new OE valves. They're $70 each from FCP euro with the hoses and they've worked fine for 14 years on my N54... I'll let ya'll know if they fix my whine...
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