GFB DV+ installation on 320i ?

lance666 · 06-11-2015, 06:56 PM

anyone tried DIY ?
Does it require tuning after installation or it will work well with my Racechip?

Stubok · 06-11-2015, 11:13 PM

There is no additional tuning.

I have mine, but haven't yet attempted the install. I'm installing on N20 328i engine, but the kit is the same for the 320i.

I spoke to GFB about the install. They have some customers that have installed them, but apparently it is not easy.

It will likely require the turbo to be removed or at least loosened for the install.

lance666 · 06-13-2015, 07:27 PM

Quote:

Originally Posted by Stubok

There is no additional tuning.

I have mine, but haven't yet attempted the install. I'm installing on N20 328i engine, but the kit is the same for the 320i.

I spoke to GFB about the install. They have some customers that have installed them, but apparently it is not easy.

It will likely require the turbo to be removed or at least loosened for the install.

ic, do share some pic after your installation done.

Stubok · 07-08-2015, 08:26 PM

So I finally installed my DV+from GFB. This is on a 2014 F30 328i N20 Engine.

I decided that at $110 per hour and the shop saying 6.5 hours, it was worth having a crack at it myself...

Anyway the install is a total PITA! It is very very fiddly, and very time consuming! It took me the better part of 5 hours.

First let me say I have a garage that charges me $20 per hour to use a bay with a lift. The lift is a huge time and energy saver. I personally wouldn't attempt this without one, but it is probably possible.

I started off by removing the under tray, air intake box and silence/MAF section.

Then I undid the metal heat shield above the exhaust manifold, so that I had access to the top side exhaust manifold nuts.

Then I removed the downpipe to give me access to the underside and rear portion of the exhaust manifold. There are other write-ups on how to remove the DP (with the instruction on disconnecting the Sensor leads etc), so I will leave that bit out here.

Following that I removed the lead in intake pipe to the turbo (one nut underneath) and the hot charge pipe (fast clip type).

Now I had access to the manifold bolts. Well almost all of them. The last top rear one requires the O2 sensor lead support bracket to be loosened and rotated out of the way.

Before undoing the manifold nuts, I decided to check how tight they were. Amazingly they are not that tight. I was able to tighten them with just a regular socket wrench. You need Torx bits for this. The manifold nuts use a T50 I think.

Anyway I loosened all the nuts (pretty sure they are made out of Bronze) about 40 half turns (with ratchet socket wrench) so there was about 1/2" space between the nut bottom and the manifold. Thinking this would not allow me enough access to the DV bolts. WRONG...

More inspection and I find that there are two turbo stabilizing brackets. One behind and one in front. Loosened them both off to virtually undone. Then I loosened off the manifold nuts about 10 more turns. Pretty much to their end.

Victory dance!! You can now get at the DV bolts (also a Torx - T30 I think). You will need a long thin extension, but it is possible to get the last bolt out with that extension.

I removed the DV and followed the GFB instructions to fit the DV+ Kit. Very simple.

Putting the part back in the car you're not sure if it is going to fit. It's tighter than a ducks butt in there! And what makes it more difficult is you have to hold the piston in while installing it. Otherwise it can drop out and get damaged. Well lots of wiggling and swearing and finally goes in.

Then you realize it's not over. Getting the new extended bolts in is also not easy, but more fiddling and those go in and get tightened. You still need the long extension, only now it's a hex key bit in the end of it.

Before putting everything back together and tightening the bolts I pushed the manifold back up to its original position, and the head of the bolt in the DV+ closest to the cylinder head just clears. And when I say "just" I mean it looks like you couldn't get a pubic hair in between them. Though it doesn't feel like they're touching.

From there it's just reverse everything and put it all back together.

Lots of skinned knuckles and scrapes later, but It definitely behaves better than the stock DV. It really does do what they say it does. If you install it with their piston spring, the lag goes way down compared to the stock one and boost is held so much better than before. It just feels so much cleaner and smoother. The sound from the blow off is also a little different with much quicker spurts.

I guess that's because there is no leakage from it like there used to be from the stock one, and because once the pressure equalizes on both sides of the piston, the spring takes over and shuts it, even if the solenoid is still open.

I'm very happy! Oh and driving back from the garage I didn't get a CEL as GFB say can happen with the piston spring installed. Maybe because I was not that heavy footed.

Stubok · 07-08-2015, 08:30 PM

Pictures of DV+ install

Bmw doubles · 07-08-2015, 10:51 PM

Holy crap! No errors with their spring?

Stubok · 07-09-2015, 12:21 AM

Quote:

Originally Posted by Bmw doubles

Holy crap! No errors with their spring?

Nope none so far.

I still have a boost leak somewhere, so I am not pushing it. that's why I have the ER charge pipes ordered.

Also my smoke tester should be complete soon, so I will be spending a few days smoke testing while my ECU is away for the latest GSR flash. Hopefully I can find the leak and have it sorted before the ECU comes back.

Once it's all sorted I'll be able to push the DV+ a little harder

rustyminded · 07-09-2015, 03:50 AM

Quote:

Originally Posted by Stubok

Nope none so far.

I still have a boost leak somewhere, so I am not pushing it. that's why I have the ER charge pipes ordered.

Also my smoke tester should be complete soon, so I will be spending a few days smoke testing while my ECU is away for the latest GSR flash. Hopefully I can find the leak and have it sorted before the ECU comes back.

Once it's all sorted I'll be able to push the DV+ a little harder

just a stupid question how is your ecu away and your driving the car ?!

Stubok · 07-09-2015, 07:11 AM

Quote:

Originally Posted by rustyminded

Quote:

Originally Posted by Stubok

Nope none so far.

I still have a boost leak somewhere, so I am not pushing it. that's why I have the ER charge pipes ordered.

Also my smoke tester should be complete soon, so I will be spending a few days smoke testing while my ECU is away for the latest GSR flash. Hopefully I can find the leak and have it sorted before the ECU comes back.

Once it's all sorted I'll be able to push the DV+ a little harder

just a stupid question how is your ecu away and your driving the car ?!

No driving while the ECU is away bro. But you can smoke test the system. You don't need the ECU for that.

rustyminded · 07-09-2015, 08:16 AM

Quote:

Originally Posted by Stubok

No driving while the ECU is away bro. But you can smoke test the system. You don't need the ECU for that.

lucky us we don't have of those tests

Stubok · 07-09-2015, 09:29 AM

Quote:

Originally Posted by rustyminded

Quote:

Originally Posted by Stubok

No driving while the ECU is away bro. But you can smoke test the system. You don't need the ECU for that.

lucky us we don't have of those tests

I built a paint can smoke tester like this one.

Easy to build for anyone. Now you can find boost leaks by yourself, anywhere.

I'm working out how to connect it to our charge system. I'm thinking probably remove the intake/silencer/MAF pipe and hook the smoke tester up to the remaining lead in section to the turbo. Then fill the system with pressurized smoke.

Fingers crossed that identifies the leak.

rustyminded · 07-09-2015, 10:19 AM

Quote:

Originally Posted by Stubok

I built a paint can smoke tester like this one.

Easy to build for anyone. Now you can find boost leaks by yourself, anywhere.

I'm working out how to connect it to our charge system. I'm thinking probably remove the intake/silencer/MAF pipe and hook the smoke tester up to the remaining lead in section to the turbo. Then fill the system with pressurized smoke.

Fingers crossed that identifies the leak.

oh stupid me, smoke test for boost leak. i though you mean by state that one each year lol

Tomahawk · 07-20-2015, 11:56 AM

This seems intriguing. I used the DV+ on my Stage 2 GTI and it was fantastic. Did exactly what they say it does. Of course, it only took 30 mins on my back in the garage with that car.

Stubok · 07-20-2015, 06:29 PM

Quote:

Originally Posted by Tomahawk

This seems intriguing. I used the DV+ on my Stage 2 GTI and it was fantastic. Did exactly what they say it does. Of course, it only took 30 mins on my back in the garage with that car.

Working great so far, but royal pita to install.

x328x · 07-21-2015, 08:22 AM

Sorry for the dumb question but what does this do

Stubok · 07-21-2015, 08:50 AM

Quote:

Originally Posted by x328x

Sorry for the dumb question but what does this do

http://www.gfb.com.au/products/blow-...valves/dv-plus

wmandra · 07-21-2015, 01:39 PM

Step by step install writeup: http://f30.bimmerpost.com/forums/sho....php?t=1153103

F30 Epal · 03-26-2017, 01:58 AM

Sorry for the necropost but which DV should I get for my n20 320i? The T9356 or T9357

smallba · 03-26-2017, 07:40 AM

Quote:

Originally Posted by F30 Epal

Sorry for the necropost but which DV should I get for my n20 320i? The T9356 or T9357

T9357

F30 Epal · 03-26-2017, 03:41 PM

Quote:

Originally Posted by smallba

Quote:

Originally Posted by F30 Epal

Sorry for the necropost but which DV should I get for my n20 320i? The T9356 or T9357

T9357

Thanks!

D041987 · 03-28-2017, 12:57 PM

Might do this if I upgrade. haha The write up is the best way to go about it rather then removing the entire manifold.

smallba · 03-28-2017, 11:02 PM

Quote:

Originally Posted by D041987

Might do this if I upgrade. haha The write up is the best way to go about it rather then removing the entire manifold.

it was a PITA to do, be patient for sure

06-11-2015, 06:56 PM	#1
lance666 Private First Class 53 Rep 123 Posts Drives: 320i Join Date: Oct 2014 Location: SG iTrader: (0)	GFB DV+ installation on 320i ? anyone tried DIY ? Does it require tuning after installation or it will work well with my Racechip?
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06-11-2015, 11:13 PM	#2
Stubok Lieutenant 472 Rep 577 Posts Drives: Melbourne Red F30 328i M Sport Join Date: Dec 2014 Location: Austin TX iTrader: (0)	There is no additional tuning. I have mine, but haven't yet attempted the install. I'm installing on N20 328i engine, but the kit is the same for the 320i. I spoke to GFB about the install. They have some customers that have installed them, but apparently it is not easy. It will likely require the turbo to be removed or at least loosened for the install.
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07-08-2015, 08:26 PM	#4
Stubok Lieutenant 472 Rep 577 Posts Drives: Melbourne Red F30 328i M Sport Join Date: Dec 2014 Location: Austin TX iTrader: (0)	So I finally installed my DV+from GFB. This is on a 2014 F30 328i N20 Engine. I decided that at $110 per hour and the shop saying 6.5 hours, it was worth having a crack at it myself... Anyway the install is a total PITA! It is very very fiddly, and very time consuming! It took me the better part of 5 hours. First let me say I have a garage that charges me $20 per hour to use a bay with a lift. The lift is a huge time and energy saver. I personally wouldn't attempt this without one, but it is probably possible. I started off by removing the under tray, air intake box and silence/MAF section. Then I undid the metal heat shield above the exhaust manifold, so that I had access to the top side exhaust manifold nuts. Then I removed the downpipe to give me access to the underside and rear portion of the exhaust manifold. There are other write-ups on how to remove the DP (with the instruction on disconnecting the Sensor leads etc), so I will leave that bit out here. Following that I removed the lead in intake pipe to the turbo (one nut underneath) and the hot charge pipe (fast clip type). Now I had access to the manifold bolts. Well almost all of them. The last top rear one requires the O2 sensor lead support bracket to be loosened and rotated out of the way. Before undoing the manifold nuts, I decided to check how tight they were. Amazingly they are not that tight. I was able to tighten them with just a regular socket wrench. You need Torx bits for this. The manifold nuts use a T50 I think. Anyway I loosened all the nuts (pretty sure they are made out of Bronze) about 40 half turns (with ratchet socket wrench) so there was about 1/2" space between the nut bottom and the manifold. Thinking this would not allow me enough access to the DV bolts. WRONG... More inspection and I find that there are two turbo stabilizing brackets. One behind and one in front. Loosened them both off to virtually undone. Then I loosened off the manifold nuts about 10 more turns. Pretty much to their end. Victory dance!! You can now get at the DV bolts (also a Torx - T30 I think). You will need a long thin extension, but it is possible to get the last bolt out with that extension. I removed the DV and followed the GFB instructions to fit the DV+ Kit. Very simple. Putting the part back in the car you're not sure if it is going to fit. It's tighter than a ducks butt in there! And what makes it more difficult is you have to hold the piston in while installing it. Otherwise it can drop out and get damaged. Well lots of wiggling and swearing and finally goes in. Then you realize it's not over. Getting the new extended bolts in is also not easy, but more fiddling and those go in and get tightened. You still need the long extension, only now it's a hex key bit in the end of it. Before putting everything back together and tightening the bolts I pushed the manifold back up to its original position, and the head of the bolt in the DV+ closest to the cylinder head just clears. And when I say "just" I mean it looks like you couldn't get a pubic hair in between them. Though it doesn't feel like they're touching. From there it's just reverse everything and put it all back together. Lots of skinned knuckles and scrapes later, but It definitely behaves better than the stock DV. It really does do what they say it does. If you install it with their piston spring, the lag goes way down compared to the stock one and boost is held so much better than before. It just feels so much cleaner and smoother. The sound from the blow off is also a little different with much quicker spurts. I guess that's because there is no leakage from it like there used to be from the stock one, and because once the pressure equalizes on both sides of the piston, the spring takes over and shuts it, even if the solenoid is still open. I'm very happy! Oh and driving back from the garage I didn't get a CEL as GFB say can happen with the piston spring installed. Maybe because I was not that heavy footed.
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07-08-2015, 08:30 PM	#5
Stubok Lieutenant 472 Rep 577 Posts Drives: Melbourne Red F30 328i M Sport Join Date: Dec 2014 Location: Austin TX iTrader: (0)	Pictures of DV+ install Attached Images
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07-08-2015, 10:51 PM	#6
Bmw doubles Dream crusher 984 Rep 2,421 Posts Drives: Fast Join Date: Mar 2015 Location: westside iTrader: (0) Garage List 2011 535 [0.00]	Holy crap! No errors with their spring? __________________ 535i MIssion Performance, PS2, Helix HPFP Kit, Wagner FMIC, Spec 3 clutch, Steel SMF, Wolf Racing CP, UUC SSK, GFB dv, SprintBooster, Custom Dynomax Exhaust, M5 Sways, Eibach OE Springs, Koni Sports Adjustable, Custom Short Ram CAI IG: @bmwdoubles
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07-20-2015, 11:56 AM	#13
Tomahawk Second Lieutenant 92 Rep 228 Posts Drives: 2014 328I MSport Join Date: Sep 2012 Location: Pensacola iTrader: (2)	This seems intriguing. I used the DV+ on my Stage 2 GTI and it was fantastic. Did exactly what they say it does. Of course, it only took 30 mins on my back in the garage with that car.
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07-21-2015, 08:22 AM	#15
x328x Captain 276 Rep 864 Posts Drives: 2014 328i M Sport Join Date: Sep 2014 Location: Vic iTrader: (0)	Sorry for the dumb question but what does this do
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07-21-2015, 01:39 PM	#17
wmandra Track Addict 99 Rep 242 Posts Drives: 2010 328i, 2014 Z4 Join Date: Jan 2010 Location: NJ, USA iTrader: (0)	Step by step install writeup: http://f30.bimmerpost.com/forums/sho....php?t=1153103 __________________ Driver, Ratchet Head Racing #93 BMW Z4 Club Organizer, Garden State Euros Motorsport Division 2014 Glacier Silver Z4 28i M Sport - See the build thread: http://e89.zpost.com/forums/showthread.php?t=950367
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03-26-2017, 01:58 AM	#18
F30 Epal Private 19 Rep 89 Posts Drives: F30 320i Join Date: Jul 2013 Location: SoCal iTrader: (0)	Sorry for the necropost but which DV should I get for my n20 320i? The T9356 or T9357 __________________ My Instagram Alpine White '14 BMW 320i 6-Speed MT: GSR Tuned, H&R Sport Springs, Injen CAI, Borla catback exhaust, ER FMIC/Chargepipe/Downpipe, VMR V810 wheels
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03-28-2017, 12:57 PM	#21
D041987 Big Turbo Boys N Girls 327 Rep 579 Posts Drives: 2012 328I 6speed Join Date: Apr 2016 Location: Lynnwood, WA iTrader: (0)	Might do this if I upgrade. haha The write up is the best way to go about it rather then removing the entire manifold. Last edited by D041987; 03-28-2017 at 01:09 PM..
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