GFB DV+ installation

Supermoon · 03-28-2018, 11:04 PM

Has anyone tried accessing the diverter valve from the top by removing the inlet and turbo side charge pipe?

I really wanna avoid going from the bottom because I have an XI (requires dropping front subframe).

What would be the best way to take out the diverter valve on an XI?

Also, are there any known downsides of doing this mod on a stock turbo?

maddmatth · 03-29-2018, 04:28 AM

"Also, are there any known downsides of doing this mod on a stock turbo?"

I installed it in an almost stock turbo. Just has a more aggressive compressor wheel like the stage 1s. Sport spring included.
Haven't noticed any negative effects at all.

OTN55 · 03-29-2018, 08:05 AM

i did not try this. in the end i removed the water pump it was a bitch but worth it

EB89 · 08-07-2018, 10:14 PM

Quote:

Originally Posted by OTN55

i did not try this. in the end i removed the water pump it was a bitch but worth it

Does it sound any different at all? or feel different holding boost

fatty335 · 08-08-2018, 07:49 AM

Quote:

Originally Posted by Supermoon

Has anyone tried accessing the diverter valve from the top by removing the inlet and turbo side charge pipe?

I really wanna avoid going from the bottom because I have an XI (requires dropping front subframe).

What would be the best way to take out the diverter valve on an XI?

Also, are there any known downsides of doing this mod on a stock turbo?

Yes - it is entirely possible to install the GFB DV+ from the top - I did it. Removing the turbo inlet will allow removal of the top two of three allen-head bolts. I had to get creative and eventually used a standard hex key with a very small box-end wrench on it. The bottom one will require unbolting but not removing or draining the water pump (three bolts). You can then go in with a long extension from the front to remove the last bolt. No downsides on my stock turbo - just the opposite. Holds boost better and is more responsive than factory valve. I installed with the spring. No difference in sound. Hope this helps!

Supermoon · 08-08-2018, 10:45 AM

Quote:

Originally Posted by fatty335

Yes - it is entirely possible to install the GFB DV+ from the top - I did it. Removing the turbo inlet will allow removal of the top two of three allen-head bolts. I had to get creative and eventually used a standard hex key with a very small box-end wrench on it. The bottom one will require unbolting but not removing or draining the water pump (three bolts). You can then go in with a long extension from the front to remove the last bolt. No downsides on my stock turbo - just the opposite. Holds boost better and is more responsive than factory valve. I installed with the spring. No difference in sound. Hope this helps!

It's nice to know it can be done without draining coolant. Thanks.

fatty335 · 08-08-2018, 12:34 PM

Quote:

Originally Posted by Supermoon

It's nice to know it can be done without draining coolant. Thanks.

FYI - you will need to remove the radiator fan also (not hard at all).

03-28-2018, 11:04 PM	#1
Supermoon Lieutenant 166 Rep 429 Posts Drives: 2011 e92 335xi Join Date: Aug 2015 Location: Seoul iTrader: (6) Garage List 2011 BMW 335i xDriv ... [10.00]	GFB DV+ installation Has anyone tried accessing the diverter valve from the top by removing the inlet and turbo side charge pipe? I really wanna avoid going from the bottom because I have an XI (requires dropping front subframe). What would be the best way to take out the diverter valve on an XI? Also, are there any known downsides of doing this mod on a stock turbo? __________________ 2011 E92 335i xDrive Pure Stage 1 \| DV+ & Inlet \| Injen Intake \| M3 Cowl \| ETS 5" FMIC & CP \| Aquamist HFS4 Direct Port \| CSF Radiator \| Wagner Catted DP \| BMW PE \| Apex FL-5 \| Michelin PS4S \| 335is Engine mount \| SDW Monoball thrust arms \| UUC Swaybars & SS Brake lines \| Bilstein B8 \| Dinan Springs & Shock mounts \| Whiteline RSFB \| M3 Rear Control arms \| Manzo Toe arms \| Wavetrac LSD
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03-29-2018, 04:28 AM	#2
maddmatth Major 555 Rep 922 Posts Drives: F82 M4, E92 335i Join Date: Jun 2015 Location: New Zealand iTrader: (0)	"Also, are there any known downsides of doing this mod on a stock turbo?" I installed it in an almost stock turbo. Just has a more aggressive compressor wheel like the stage 1s. Sport spring included. Haven't noticed any negative effects at all.
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03-29-2018, 08:05 AM	#3
OTN55 Second Lieutenant 38 Rep 165 Posts Drives: Fbo e92 n55 335i dct Join Date: Nov 2016 Location: Uk iTrader: (0)	i did not try this. in the end i removed the water pump it was a bitch but worth it
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