Forge Motorsport Recirculation Valve

WAY · 11-20-2008, 07:37 PM

I had a set of Forge Motorsport Recirc Valve installed on my car earlier this week. Those from VW/Audi modification world will be very familiar with the Forge DV, as it is the "done thing" for all highly boosted VW/Audi.

Anyway I had no expectation that this will change anything other than preventing my OE recirculation valve from blowing up from increased boost and track application. However what surprised me was that it actually makes a difference! When you change gears, it gives you the extra shove in the back as you are in the next gear. This is due to the valve holding boost a lot better than the factory valve. Also, throttle response has improved.

All in all I am really happy with it and really surprised by it. You guys need to see the valve, it is a work of art in billet aluminium. BEAUTIFUL! Here is a link to the product.
http://www.forgemotorsport.co.uk/con...oduct=FMDVBM35

WAY · 11-20-2008, 07:48 PM

Here is a couple of pics taken by Andrew during install.

WAY · 11-20-2008, 07:56 PM

Oh if anyone is interested in doing this, I believe Andrew is in negotiation with the importer to bring the price down with bulk purchase but I am not 100% sure. Andrew saw this as a worthwhile mod for our cars and so he is trying to source them as cheaply as possible. That was the indication I got when I spoke to him after the install but I could be wrong (sorry in advance if that is the case Andrew!). Maybe Andrew can shed some light.

AlBel1214 · 11-20-2008, 08:10 PM

Is this similar to the RR diverter valve?

randomquickness · 11-20-2008, 09:52 PM

the forge valves are different from RR. the RR dual divert valve kit also includes a hard pipe which can not flex under high boost.

WAY · 11-20-2008, 10:44 PM

Forge knows what they are doing when it comes to these things. There has been a few threads around where the Forge guys have come out to say that RR copied their valve. The hard pipe though may be a good idea. Not sure without trying it myself.

AlBel1214 · 11-20-2008, 10:55 PM

^^^ Nice... is there any notice in sound with this???

WAY · 11-20-2008, 10:56 PM

No sound at all. I am using the hardest spring as my turbo has more boost than factory. Might be different if you use medium or soft spring. I don't like the psssst sound so it suits me just fine!

AlBel1214 · 11-20-2008, 11:01 PM

^^^ Nice.. yeah I have a JB3 on my short list... so I was just curious ill bypass sound for power anyday!

professor · 12-05-2008, 02:10 AM

Wayne is absolutely spot on with this recommendation. I have it on my car now and it is easily a significant upgrade over stock and a vitally congruous one for a car with a processor. A very well-made product compared to the frankly shoddy stock part.

DTNJNQ · 12-05-2008, 03:31 AM

Are these Blow off Valves?

ORIGIN M. · 12-05-2008, 03:58 AM

Cooldaddygroove · 12-05-2008, 11:40 AM

Question: Is the body of the DV's one piece, or are either of the collars (the tube that the hose slides on to) threaded onto the body of the DV?

Zinister · 12-05-2008, 11:48 AM

Quote:

Originally Posted by DTNJNQ

Are these Blow off Valves?

Essentially, yes. A blow valve and a recirc valve do the same thing. The only difference is the BOV vents the excess pressure to the atmosphere while a recirc valve diverts the air back into your intake stream. Most cars that have a mass air flow meter will have recirc valves.

AlBel1214 · 12-05-2008, 12:09 PM

^^this may be a noob question but would a blowoff valve hinder performance from the definition above?? (since its getting rid of air that could be going to the turbos)

HondaGoneRogue · 12-05-2008, 12:15 PM

^^ Not on our cars it wouldn't. We have no Mass airflow sensor, so the computer does not see how much air is coming in. It only sees air pressure via a manifold absolute pressure sensor. So we can vent to the atmosphere and the computer doesn't "care".

AlBel1214 · 12-05-2008, 12:26 PM

^^ Thanks for the input!

..... I never had a car where I could even hook up either one of these so now I am excited to pick one...

I have heard with a tune a recirc valve is very helpful though... but stock doesn't do much... is this also correct??

DTNJNQ · 12-05-2008, 09:53 PM

The following thread suggest that after market BOV may cause turbo failure. See quote box in post#1

http://www.1addicts.com/forums/showthread.php?t=20053

HondaGoneRogue · 12-05-2008, 10:43 PM

LOL, there's no way a BOV did that to those turbo's. That thread is old and he dropped a bolt in the intake pipe. I've had plenty of turbo cars, and if the turbos are that weak to where a "little" compressor surge can do that much damage, then everybody better sell thier cars while they are still running. I would suggest everyone read up on compressor surge.

andrew@southernBM · 12-06-2008, 01:02 AM

I have Riss Racing Divertors, and Riss Racing Stage 3 intakes, Forge Divertors or Active Autowerke Blow off valves available if anyone is interested.

M1rider · 12-10-2008, 10:36 PM

does anyone know how to pull the stock valves off b turning the gray piece clockwise because mines not turning

11-20-2008, 07:37 PM	#1
WAY Brigadier General 458 Rep 4,822 Posts Drives: Fast ones Join Date: Jul 2007 Location: Melbourne, Australia iTrader: (0)	Forge Motorsport Recirculation Valve I had a set of Forge Motorsport Recirc Valve installed on my car earlier this week. Those from VW/Audi modification world will be very familiar with the Forge DV, as it is the "done thing" for all highly boosted VW/Audi. Anyway I had no expectation that this will change anything other than preventing my OE recirculation valve from blowing up from increased boost and track application. However what surprised me was that it actually makes a difference! When you change gears, it gives you the extra shove in the back as you are in the next gear. This is due to the valve holding boost a lot better than the factory valve. Also, throttle response has improved. All in all I am really happy with it and really surprised by it. You guys need to see the valve, it is a work of art in billet aluminium. BEAUTIFUL! Here is a link to the product. http://www.forgemotorsport.co.uk/con...oduct=FMDVBM35
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11-20-2008, 07:48 PM	#2
WAY Brigadier General 458 Rep 4,822 Posts Drives: Fast ones Join Date: Jul 2007 Location: Melbourne, Australia iTrader: (0)	Here is a couple of pics taken by Andrew during install.
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11-20-2008, 07:56 PM	#3
WAY Brigadier General 458 Rep 4,822 Posts Drives: Fast ones Join Date: Jul 2007 Location: Melbourne, Australia iTrader: (0)	Oh if anyone is interested in doing this, I believe Andrew is in negotiation with the importer to bring the price down with bulk purchase but I am not 100% sure. Andrew saw this as a worthwhile mod for our cars and so he is trying to source them as cheaply as possible. That was the indication I got when I spoke to him after the install but I could be wrong (sorry in advance if that is the case Andrew!). Maybe Andrew can shed some light.
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11-20-2008, 08:10 PM	#4
AlBel1214 Major 52 Rep 1,118 Posts Drives: past 135i, now c6, future M3?? Join Date: Aug 2008 Location: Philly iTrader: (0)	Is this similar to the RR diverter valve? __________________ -----LS3 C6----- *z51 suspension,* *NPP dual mode exhaust(wild2mild),20% tint,* zr1 replica wheels, gloss black fender stripes** R.I.P SGM 135i w/ some mods
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11-20-2008, 09:52 PM	#5
randomquickness Brigadier General 219 Rep 3,668 Posts Drives: 996tt Join Date: Sep 2008 Location: Georgetown, TX iTrader: (13)	the forge valves are different from RR. the RR dual divert valve kit also includes a hard pipe which can not flex under high boost. __________________
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11-20-2008, 10:44 PM	#6
WAY Brigadier General 458 Rep 4,822 Posts Drives: Fast ones Join Date: Jul 2007 Location: Melbourne, Australia iTrader: (0)	Forge knows what they are doing when it comes to these things. There has been a few threads around where the Forge guys have come out to say that RR copied their valve. The hard pipe though may be a good idea. Not sure without trying it myself.
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11-20-2008, 10:55 PM	#7
AlBel1214 Major 52 Rep 1,118 Posts Drives: past 135i, now c6, future M3?? Join Date: Aug 2008 Location: Philly iTrader: (0)	^^^ Nice... is there any notice in sound with this??? __________________ -----LS3 C6----- *z51 suspension,* *NPP dual mode exhaust(wild2mild),20% tint,* zr1 replica wheels, gloss black fender stripes** R.I.P SGM 135i w/ some mods
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11-20-2008, 10:56 PM	#8
WAY Brigadier General 458 Rep 4,822 Posts Drives: Fast ones Join Date: Jul 2007 Location: Melbourne, Australia iTrader: (0)	No sound at all. I am using the hardest spring as my turbo has more boost than factory. Might be different if you use medium or soft spring. I don't like the psssst sound so it suits me just fine!
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11-20-2008, 11:01 PM	#9
AlBel1214 Major 52 Rep 1,118 Posts Drives: past 135i, now c6, future M3?? Join Date: Aug 2008 Location: Philly iTrader: (0)	^^^ Nice.. yeah I have a JB3 on my short list... so I was just curious ill bypass sound for power anyday! __________________ -----LS3 C6----- *z51 suspension,* *NPP dual mode exhaust(wild2mild),20% tint,* zr1 replica wheels, gloss black fender stripes** R.I.P SGM 135i w/ some mods
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12-05-2008, 02:10 AM	#10
professor Major 46 Rep 1,473 Posts Drives: Z4 M40i Join Date: Mar 2008 iTrader: (0)	Wayne is absolutely spot on with this recommendation. I have it on my car now and it is easily a significant upgrade over stock and a vitally congruous one for a car with a processor. A very well-made product compared to the frankly shoddy stock part.
	Appreciate 0 Quote

12-05-2008, 03:31 AM	#11
DTNJNQ Captain 110 Rep 994 Posts Drives: M2, 135i, Xclass Join Date: Apr 2008 Location: Melbourne, Australia iTrader: (0) Garage List 2008 BMW 135i [8.66]	Are these Blow off Valves?
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12-05-2008, 03:58 AM	#12
ORIGIN M. Banned 3160 Rep 9,134 Posts Drives: ///M Join Date: Oct 2007 Location: Northern Hemisphere iTrader: (0)
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12-05-2008, 11:40 AM	#13
Cooldaddygroove First Lieutenant 12 Rep 308 Posts Drives: Join Date: Sep 2008 iTrader: (0)	Question: Is the body of the DV's one piece, or are either of the collars (the tube that the hose slides on to) threaded onto the body of the DV?
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12-05-2008, 12:09 PM	#15
AlBel1214 Major 52 Rep 1,118 Posts Drives: past 135i, now c6, future M3?? Join Date: Aug 2008 Location: Philly iTrader: (0)	^^this may be a noob question but would a blowoff valve hinder performance from the definition above?? (since its getting rid of air that could be going to the turbos) __________________ -----LS3 C6----- *z51 suspension,* *NPP dual mode exhaust(wild2mild),20% tint,* zr1 replica wheels, gloss black fender stripes** R.I.P SGM 135i w/ some mods
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12-05-2008, 12:15 PM	#16
HondaGoneRogue They like my Swag... 433 Rep 3,762 Posts Drives: 15 GSM 435i GC Join Date: Aug 2008 Location: South Dakota iTrader: (4) Garage List 2015 435i Gran Coupe [0.00]	^^ Not on our cars it wouldn't. We have no Mass airflow sensor, so the computer does not see how much air is coming in. It only sees air pressure via a manifold absolute pressure sensor. So we can vent to the atmosphere and the computer doesn't "care". __________________ 2015 435i Gran Coupe - Current 2008 AW 135i - Sold
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12-05-2008, 12:26 PM	#17
AlBel1214 Major 52 Rep 1,118 Posts Drives: past 135i, now c6, future M3?? Join Date: Aug 2008 Location: Philly iTrader: (0)	^^ Thanks for the input! ..... I never had a car where I could even hook up either one of these so now I am excited to pick one... I have heard with a tune a recirc valve is very helpful though... but stock doesn't do much... is this also correct?? __________________ -----LS3 C6----- *z51 suspension,* *NPP dual mode exhaust(wild2mild),20% tint,* zr1 replica wheels, gloss black fender stripes** R.I.P SGM 135i w/ some mods
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12-05-2008, 09:53 PM	#18
DTNJNQ Captain 110 Rep 994 Posts Drives: M2, 135i, Xclass Join Date: Apr 2008 Location: Melbourne, Australia iTrader: (0) Garage List 2008 BMW 135i [8.66]	The following thread suggest that after market BOV may cause turbo failure. See quote box in post#1 http://www.1addicts.com/forums/showthread.php?t=20053
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12-05-2008, 10:43 PM	#19
HondaGoneRogue They like my Swag... 433 Rep 3,762 Posts Drives: 15 GSM 435i GC Join Date: Aug 2008 Location: South Dakota iTrader: (4) Garage List 2015 435i Gran Coupe [0.00]	LOL, there's no way a BOV did that to those turbo's. That thread is old and he dropped a bolt in the intake pipe. I've had plenty of turbo cars, and if the turbos are that weak to where a "little" compressor surge can do that much damage, then everybody better sell thier cars while they are still running. I would suggest everyone read up on compressor surge. __________________ 2015 435i Gran Coupe - Current 2008 AW 135i - Sold
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12-06-2008, 01:02 AM	#20
andrew@southernBM 168 Rep 1,536 Posts Drives: M3 F80, M140i Join Date: Apr 2008 Location: Melbourne, Australia. iTrader: (0)	I have Riss Racing Divertors, and Riss Racing Stage 3 intakes, Forge Divertors or Active Autowerke Blow off valves available if anyone is interested.
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12-10-2008, 10:36 PM	#21
M1rider Retired: 2008 135i /// 2011 1M 76 Rep 300 Posts Drives: 2020 M2 CS / 2010 Techno M3 Join Date: May 2008 Location: NJ iTrader: (5)	does anyone know how to pull the stock valves off b turning the gray piece clockwise because mines not turning
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