GolfGTIforum.co.uk
Model specific boards => Golf mk5 => Topic started by: dubaiphil on 11 August 2008, 13:01
-
Guys
I am getting a slight whooshing noise (for about 0.5 - 1 second) on change up under 50% acceleration at the moment, but with little or no loss of power. This is mainly noticable on change up from 2nd to 3rd.
After reading a recent thread, it sounds as if the DV is on its way out, and I'm thinking about changing to the Forge DV.
Now, I've just heard about the G Valve, which is an OEM part and is now fitted in the GTI - apparently it is stronger than the previous version. The question is, does anyone know when this was introduced and if it is a more permanent solution like the Forge? Is it a worthwhile replacement or should I go for the Forge?
p.s. I've got a 2008 GTI (built around October 2008), running a Stage 1 remap, with high ambient temperatures over here....
-
i would personally just get the Forge if i was you, unless its under warranty then get them to put new one in
-
p.s. I've got a 2008 GTI (built around October 2008), running a Stage 1 remap, with high ambient temperatures over here....
We cannot advise with cars built in the future... :grin:
The G version is similiar to the previous version and has the same weaknesses so like 182_blue says, consider the Forge solution.
-
i bought an updated G version in March this year as a spare only £23 approx
not sure how long it has been current for
-
subtle typo - Oct 2007....!
-
subtle typo - Oct 2007....!
lol, I know hence the smilie in the original post.
-
Another option and IMHO the preferred option is to make up a relocation kit as fitted to the ED30 and other KO4 turbo equipped cars.
This is simply as case of buying the parts from VW.
-
My car is August 07 and was fitted with the "C" valve from new. This only lasted about 6k miles of Revo abuse. I fitted a new "G" valve and am at 24k now, so far so good.
What my old one looked like:
(http://i207.photobucket.com/albums/bb110/kidddfrost/2.jpg)
(http://i207.photobucket.com/albums/bb110/kidddfrost/1.jpg)
-
I bought one off the internet that claimed to be the "latest" version - and got the C version (same as in the car now)
So where did you guys get the G version?
-
Surely the obvious place??
Main Dealer.
-
just go with forge, :smiley:
-
main dealer or somewhere like VAGPARTS
I have a Forge in my garage still from when I took it off - not has time to put it back on and since the G seems to be holding up well I dont know if I can be bothered now...
-
I thought the whooshing noise was normal? I have noticed it more since I got my Revo Stage 1 a few weeks ago and was advised by the Revo dealer that I the car was not making full boost and this was more than likely down to the DV valve. I purchased the new 'G' valve from the dealer and I am getting it fitted today so hopefully when I take it to JKM on Friday the will tell me I am getting full boost. I will take some pics of the old valve and post them here later.
On the same note, I have noticed that since Revo Stage 1 between 3000-4000 RPM I am getting a whining noise, I think it’s the turbo or might even be the DV valve on its way out. Any one else had this?
-
main dealer or somewhere like VAGPARTS
I have a Forge in my garage still from when I took it off - not has time to put it back on and since the G seems to be holding up well I dont know if I can be bothered now...
Sell the Forge and do the relocation mod Neil :grin:
-
main dealer or somewhere like VAGPARTS
I have a Forge in my garage still from when I took it off - not has time to put it back on and since the G seems to be holding up well I dont know if I can be bothered now...
Sell the Forge and do the relocation mod Neil :grin:
You just like spending my money! I might sell the Dbilas and relocate instead...
-
Wheres the best place to buy a forge DV Valve? Are they easily fitted?
-
You can buy directly from Forge or via the network of dealers.
You need to remove the existing Diverter from the turbo housing and fit the forge one, then run the vacuum source to the forge valve.
In true Haynes fashion probably 2 out of 5 spanners for difficulty depending of course on your abilities.
-
The GTI I am about to buy has a swoosh noise under acceleration - is this normal? It has been remapped. My remapped GT TDI has the owl noise and this is normal from the turbo. I assumed when I test drove the GTI the swoosh noise didnt mean anything wrong......but mentioned earlier dubaiphil thinks his dv valve is on the way out..could this be the case with the GTI I am about to buy? It has just been serviced as well so I assume all should be well.
-
DV's fail even on stock cars, the later revisions have helped and the G version seems to be much better.
-
DV's fail even on stock cars, the later revisions have helped and the G version seems to be much better.
ok - ill just drive away at her and I can deal with it at the time if it fails.
-
....The DV is known to be a weak link because of its design and materials used. Relocating it may help but still isn't a guarantee. If your car is remapped and therefore has higher boost levels I would definitely buy a Forge DV simply as a precaution, plus it's supposed to hold boost for longer anyway. Forge guarantee their products long term.
The Forge DV : -
(http://i22.photobucket.com/albums/b308/RedRobin_05/ForgeDV.jpg)
-
I thought the whooshing noise was normal? I have noticed it more since I got my Revo Stage 1 a few weeks ago and was advised by the Revo dealer that I the car was not making full boost and this was more than likely down to the DV valve. I purchased the new 'G' valve from the dealer and I am getting it fitted today so hopefully when I take it to JKM on Friday the will tell me I am getting full boost. I will take some pics of the old valve and post them here later.
On the same note, I have noticed that since Revo Stage 1 between 3000-4000 RPM I am getting a whining noise, I think it’s the turbo or might even be the DV valve on its way out. Any one else had this?
Pridders - It's not turbo whine stylee whooshing, but the owl farting has decreased and it's as if there is quiet 1 second whoosh when the actual gear is changing rather than when the car is accelerating under boost. I presume this is the valve going but there is currently no loss of power, but it seems a good time to get the Forge fitted anyway
I've got a friend who's had a remap, the forge DV and twintercooler fitted all at once. This resulted in ECU problems and big loss of power, so the forge was replaced with the original OEM valve and everything went back to normal
Has anyone heard of the Forge DV creating any problems with remapped cars, or does the car have to be reflashed after the forge is installed?
It's probably just a case of the muppets installing the parts getting it wrong......
If no-one's had any problems with their Forge at all and this example above was an installation issue, I'll probably just buy his for 70GBP - far quicker than buying from the UK or US, and I'm getting quotes of 250GBP from a local 'supplier' who hasn't got it in stock anyway...
-
I've had a Forge Valve before and whilst I normally highly rate their products on this occasion I don't think it is the best solution.
-
....I had my Forge DV installed some time after my Revo remap and have had no problems.
-
I've had a Forge Valve before and whilst I normally highly rate their products on this occasion I don't think it is the best solution.
....I'm sure I'm not the only one here who respects your opinions/views/conclusions enough to be interested in hearing your criticisms of the Forge DV as a solution.
-
This was the series of events for my friend:
forge DV and intercooler fitted > ECU went into limp mode > forge DV taken out and stock valve replaced, intercooler seals replaced > ECU still in limp mode > Superchip ECU upgrade installed > everything ok
Is this DV worth getting 'second hand' after being fitted for 24 hours....???
-
I don't know why the car went into limp mode but most problems occuring after the DV has been fitting are usually down to incorrect fittment.
-
I don't know why the car went into limp mode but most problems occuring after the DV has been fitting are usually down to incorrect fittment.
....Which is exactly why I paid a professional (JKM Portsmouth) to fit mine. It can be tricky to fit - It IS tricky to fit for a non-mechanic type such as myself!
-
I'd agree that it sounds like an installaton problem.
-
I've had a Forge Valve before and whilst I normally highly rate their products on this occasion I don't think it is the best solution.
....I'm sure I'm not the only one here who respects your opinions/views/conclusions enough to be interested in hearing your criticisms of the Forge DV as a solution.
Me too.
Everyone I've spoken to rates the Forge DV highly. It certainly isn't fit and forget which some people think it is, but with regular service like any other part of your car it is a good piece of kit and not prone to failure like the OEM part.
-
This was the series of events for my friend:
forge DV and intercooler fitted > ECU went into limp mode > forge DV taken out and stock valve replaced, intercooler seals replaced > ECU still in limp mode > Superchip ECU upgrade installed > everything ok
Is this DV worth getting 'second hand' after being fitted for 24 hours....???
Sounds like someone didn't plumb the DV in properly and caused a fault, when the stock item was replaced and the ECU flashed for the remap it cleared the fault.
Definately worth getting, just don't get the same numpty to fit it.
-
Lol - thanks guys - never seen the product in the flesh or the fitments, but us anything cut to fit - would there be any problems if it has already been fitted (badly) to another GTI???
-
i had mine fitted a while after a custom code re map , professionally at jbs and had no problems at all , it smooths things out imo :smiley:
-
Going off at a slight tangent here, Stu mentioned the DV relocation for the 200PS engine.
Whether the Forge or an uprated standard DV is used I guess this would be a good modification and at the very least it would make it easier to periodically check the DV (or service it as required).
Is this much of a job and does it require many parts?
I've not replaced my DV yet because it is well hidden and have often thought that if I went to the trouble of changing it then it would be handy to relocate it too for ease of future access.
-
The job to relocate the DV is pretty simple, the parts required are -
1 x 06F 129 627 H - Intake Pipe (Only if you use the stock engine cover)
1 x 1K0 145 845 A - Pressure Hose
2 x N909 265 01 - Clamp
2 x N906 871 01 - Spring Type Clip
1 x 06F 145 751 - Intermediate Flange
3 x N101 961 03 - Bolt, Socket Head
1 x N015 082 13 - Hexagon Nut
1 x 06F 145 383 L - Holder
1 x 1K0 145 693 B - Air Circulation Pipe
1 x 1K0 145 770 P - Air Pipe
Wiring Parts
1 x 1J0 973 822A - 2 Pin Brown Flat Contact Housing
1 x 000 979 134 - Single Wire 1.0mm
1 x 1J0 973 722A - 2 Pin Black Flat Contact Housing
1 x 000 979 133 - Single Wire 1.0mm
2 x N 107 324 01 - Corrugated Pipe 4.5mm
2 x N 906 819 01 - Corrugated Pipe End Piece 4.5mm
If you use an aftermarket intake you will need to have the pipe modified to incorporate a stub pipe on the elbow above the turbo so that the returned air can feed back in there. You will also need a blank for the existing DV in the turbo casing, I have a template for this and can help with that if required.
As you say it is perfectly located to keep an eye on the stock DV, I am currently using a stock DV with quite a lot of boost dialed in and so far no issues.
-
Thanks very much Stu, that has answered everything perfectly!
:smiley: