GFB DV+ diverter valve - worth having?

K

KevinF

Registered User
Joined
Apr 7, 2009
Messages
71
Reaction score
4
Points
8
Location
NULL
Considering this DV for my A3 2.0 TFSI 2007 S-line.
Are they worth the £99 or should I just go for the cheaper rev D type?

thanks.
 
One of the best mods for under £100 you can do to the S3......I have one fitted to my S3 and have sold quite alot to the S3 fraternity on here. Boosts slightly quicker and holds boost easier and for longer. Alot of people think its the placebo effect but you can definately feel the difference in the way the S3 boosts. If you dont like it then sell it as someone will buy it.......no problem.
 
Gets mixed reviews this... But i've driven stage 1 S3's with it and without and personally I think it makes a difference... No flat spot between gear shifts and exactly the reason I have 1 in mine
 
Once again mixed reviews, I've tried ref d, gfb DV and the ref g and feel that the ref g suits me best.

The only down side to the ref g is the diagram splits, so may need checking every service.

When using the gfb DV my car was hesitating and not boosting correctly even after oiling it up to free the piston a little.

Cheers Dan
 
OK all good advice. S3 cars are mentioned above but not A3's. Same comments apply to using in an A3?

Forge not mentioned so are these not liked or not as good?
 
The A3 is a more difficult proposition with any of the DVs as it is mounted on the turbo rather than round the front of the engine as on the S3. The top bolt is quite tricky, be sure you have slimline torx drivers and Allen keys before attempting anything regarding the DV+.
I have the DV+ and it works very well. I fitted a new G revision to my son'sTT and in some ways regret it as eventually it will split. However the original was a none split G with 23k on the clock and so it should last fairly well. R- tech suggest the best boost comes from G but it is a service item with tuned engines. The Forge valve does away with the electronics actuating the valve and you have to install a vacuum pipe to actuate the valve. Fit a rev D if you want to forget about it but some leak from new around the piston and I have read that this might be the equivalent to a 6mm hole in the FMIC!!
 
audi upgrades
 
I had problems with mine on my shark stage 3 S3 (now APR 2+). I'm not sure exactly what it was but it felt and sounded like compressor surge/stall when chopping the throttle on and off and back on again under heavy load, it was horrible so removed it straight away to prevent any damage.

Lots of people seem pleased with them though but wondering if they aren't suitable for the higher boost pressures required for stage 3/2+. I quizzed my local tuner when I had the APR map loaded on about it and he confirmed that he's seen the issue before and would steer clear. Oh and worth noting the Audi one's make some nice turbo sounds which I liked where as the DV+ didn't, so that depends on your preference!

Mine had the newer revision DV installed anyway so going back to the Audi one wasn't an issue.
 
Last edited:
  • Like
Reactions: sabers
I had the Forge blow off kit onto my K03 A3... My advice, stay well clear... A ****** to fit and you'll hate it after a few months... The only thing is, where its located, you wont be assed removing it... Thats what happened to mine!
 
audi upgrades
From what I have read the Ko3 love them the Ko4 are divided again its the D - G valves, personally I will get one.
 
prt57 said:
The A3 is a more difficult proposition with any of the DVs as it is mounted on the turbo rather than round the front of the engine as on the S3. The top bolt is quite tricky, be sure you have slimline torx drivers and Allen keys before attempting anything regarding the DV+.
I have the DV+ and it works very well. I fitted a new G revision to my son'sTT and in some ways regret it as eventually it will split. However the original was a none split G with 23k on the clock and so it should last fairly well. R- tech suggest the best boost comes from G but it is a service item with tuned engines. The Forge valve does away with the electronics actuating the valve and you have to install a vacuum pipe to actuate the valve. Fit a rev D if you want to forget about it but some leak from new around the piston and I have read that this might be the equivalent to a 6mm hole in the FMIC!!
Click to expand...
from what a remember r-tech are very funny about mapping cars with the DV+ , surely thats for a reason ?
 
So anyone thats had these fitted and experienced problems....

What exact issues have you had with them, boost issues!?
 
In my case it caused a sudden loss of power when quickly coming off the throttle and back on again under heavy load and WOT. This sounded like it was due to the turbo stalling which I can only put down to being the DV+ for some reason under those conditions not venting the boost pressure fast enough forcing the air back through the turbo when the throttle is closed suddenly (exactly what a DV is supposed to prevent).

I didn't keep it fitted long enough to consistently replicate the issue as it put me right off straight away!
 
MxGaza33 said:
In my case it caused a sudden loss of power when quickly coming off the throttle and back on again under heavy load and WOT. This sounded like it was due to the turbo stalling which I can only put down to being the DV+ for some reason under those conditions not venting the boost pressure fast enough forcing the air back through the turbo when the throttle is closed suddenly (exactly what a DV is supposed to prevent).

I didn't keep it fitted long enough to consistently replicate the issue as it put me right off straight away!
Click to expand...

Hmmm thats interesting... I felt mine was doing that with the standard DV, when I fitted the DV+ I felt like it took that issue away.. Sometimes although very infrequent, I lift the throttle and the revs jam at 4k rpm only for a second tho.. Happens once in a Blue moon
 
Last edited:
I have heard of erratic boost that was put down to non lub'd piston as having metal to metal friction will cause this. After the piston was lubed then the problem disappeared.
 
I took lots of time ensuring the piston was running up and down perfectly in the cylinder of the DV+ using a good coating of oil. I also gave the springs a good coating so that there's no friction build up anywhere in the unit. I have seen posts where some people lube the plunger and not the piston.
User error has a lot to answer for in situations like this. When all else fails - read the instructions!!!
 
prt57 said:
I took lots of time ensuring the piston was running up and down perfectly in the cylinder of the DV+ using a good coating of oil. I also gave the springs a good coating so that there's no friction build up anywhere in the unit. I have seen posts where some people lube the plunger and not the piston.
User error has a lot to answer for in situations like this. When all else fails - read the instructions!!!
Click to expand...

Exactly..........Im sure the instructions actually have it in BOLD to lube the piston. lol
 
Yup mine was properly lubed with engine oil and didn't use it long enough for it to dry up. They are definetly hit or miss but if you have issues you can always sell it on, they only take 5 minutes to remove (on the S3 anyway). But from my experience if your stage 2+ or above I'd go for the later revision Audi DV.
 
You must log in or register to reply here.

Similar threads

A3SBQ
GFB DV+ diverter valve kit
Replies
7
Views
5K
geforce189
G
downtothebone
Diverter valve removal K03
Replies
10
Views
4K
TimWills28
TimWills28
AA12ON
GFB diverter valve adapter...is it worth it?
Replies
9
Views
3K
S.
S.
Brodster
GFB DV+ valve group buy
Replies
23
Views
2K
ron burgandy
ron burgandy
paddy
GFB DV+
Replies
66
Views
12K
doce
D
Top
Back