Lack of boost

[rich83]

if the DV releases boost faster than a factory valve under a closed throttle and then seals more efficiently and faster,  then peak boost can be returned more quickly through the gears - something a WOT pull in one gear on RR won't demonstrate but which can certainly be felt.
e.g this is how their TMS valve works and this image compares the TMS valve to factory valve on a 200SX


But the DV+ wont make it operate any quicker..... as the actuator/solenoid in the DV is not being altered. It may seal better yes....

[cloggie]

Long time lurker here. I have now got the GFB DV+ as the guys from GFB were at the shop when I was there
I got it fitted at JD Engineering in the Netherlands. The rolling road comparison showed a marginal increase in torque of a few N/m.

What is more important to me is reducing leakage. I had the latest plastic piston type valve in my car. They fitted my valve to a alloy block they had made up to check valve leakage. I wasn't aware that it leaked so much. Taking the piston apart I suppose I should have known. The plastic 'sealing ring' seems to have at least a mm tolerance. The guy from JD engineering said it was like having a 6mm hole in the intercooler.

So while power might be marginal (but measurable) what was more important to me was leak reduction which will reduce turbo rotational speed and therefore reduce heat.

Well, put it this way, if you had a small intercooler leak, you would fix it. So why not fix the diverter valve leak? The GFB parts has life long warranty, so it was a no-brainer for me...

[MC71]

^^^^ Very good write up and description of the DV+ plus points. 

(although it does sound like you work for them  )

[Tfsi_Mike]

Thanks for sharing your findings.

I would trust JD, they have some mega performance engineering under their belt!  The guys responsible for the twin charged blue Mk4?

[vRS Carl]

Sold here too.

http://www.amdtuning.com/news.read.cfm?articleid=3201

However I still think it's in the realms of plasma coils and astronomically expensive especially when you need to strip your existing DV to fit this. I didn't pay too much more for a full DV relocation kit!

I'm happy to be proved wrong about it. But I could replace my existing DV twice for one of those and probably more if I was to buy the diaphragm type.

I wonder if it overcomes the problem that the forge one suffered in needing a service to stop it sticking open after a while.

[Tfsi_Mike]

I never had any dramas with my Forge one.  I'm back on a G version at the moment.  Sold my forge to try the forge  super size but but car didn't agree with the supersize valve at all

I plan to fit the valve upgrade at blyton park to do a before & after

[Scottymon]

I never had any dramas with my Forge one.  I'm back on a G version at the moment.  Sold my forge to try the forge  super size but but car didn't agree with the supersize valve at all

I plan to fit the valve upgrade at blyton park to do a before & after

Real world test... be good to hear your thoughts on it.  I seem to have a fair few DV's laying about the place, so stripping one to use with this kit isn't a prob.

[Tfsi_Mike]

Lee Maylon (Silver Cupra K1) has tried one from Amd.

"They did a RR before and after fitting, but won't tell me results til I've fed back to them. He said the results were good
Drive home was busy but I had a few blasts. Noticeable improvements in throttle response, I think it improves the reaction of my linear throttle.
Good quality kit too.
Not sure if there is more power but it feels like it pulls stronger to the redline."

[vRS Carl]

Just to clear something up. The DV's go, in order

Diaphragm Type

06F 145 710 A > B > C >G

They then switched to the piston type which was a replacement for all diaphragm types (It came after G Rev diaphragm type).

06H 145 710 D

They have a new piston type which is fitted to the TSi engines. The part no. for which is 06H 145 710 C. This has the outer cone from the D version removed. No idea why as any other revision fits the IHI Turbo on the TSi.

The C Version is on the left



All 3 side by side



You could have 3 Rev G DV's for the price of this new fancy DV+. You might as well just use either one of these for it. No worries about any boost then and they are about £15. But i wouldn't recommend it  

[BalanceMotorsport]

Just to clear something up. The DV's go, in order

Diaphragm Type

06F 145 710 A > B > C >G

They then switched to the piston type which was a replacement for all diaphragm types (It came after G Rev diaphragm type).

06H 145 710 D

They have a new piston type which is fitted to the TSi engines. The part no. for which is 06H 145 710 C. This has the outer cone from the D version removed. No idea why as any other revision fits the IHI Turbo on the TSi.

The C Version is on the left



All 3 side by side



You could have 3 Rev G DV's for the price of this new fancy DV+. You might as well just use either one of these for it. No worries about any boost then and they are about £15. But i wouldn't recommend it  

so if you go into a VW dealer they will supply a piston type but the diaphragm type is still available? One thing is for sure with all these revisions they know there is a weakness. What is the aluminiun ATP product at the bottom of the post? I suppose the key thing is in time the diaphragm type will split and leak and you may not realise for some time whereas the DV+ is a fit and forget part. Unless you just put the diaphragm type in as a service item to change with your airfilter and oil for example. Then many of course fit cotton gauze type air filters at 10 times the price of OE paper for the same reasons. Better performance, longer life.

[rich83]

I've had my rev G. On for about 2 years now running about 1.3bar. No issues what so ever

It's not a service item than needs replacing every 10k. It just something that needs checking once in a while.


Any feedback from mike yet?

[Tfsi_Mike]

I've had my rev G. On for about 2 years now running about 1.3bar. No issues what so ever

It's not a service item than needs replacing every 10k. It just something that needs checking once in a while.


Any feedback from mike yet?

Been chasing my tail with a steering electronics fault. Think I've gotten to the bottom of it.  Just need to pick up some different MFSW buttons tonight.

My car boosts quite hard with no noticeable Ill effects on my RevG but am keen to see if there's a noticeable difference

[rich83]

What was the Elec fault mike? 

[Tfsi_Mike]

Horn & MF buttons packed in.

Tried New buttons, new loom, CH controller, new slip ring.

The new buttons I tried turned out to be faulty 

Put some different buttons in last night, got my horn & buttons back....

However, lost access to my menus on MFD 

[rich83]

If its not one thing.....