MK5 Golf GTI
All Things Mk5 => Mk5 General Area => Topic started by: Rasco on May 04, 2016, 04:38:31 pm
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ok before everyone tells me to read this and read that, I have and I'm none the wiser.
I'm stock (pre stage 1) on an 06 manual @124K and don't believe its ever been changed.
what is current wisdom on which revision? I'm leaning towards 06F 145 710 G (ALSO CAN'T FIND THIS PART ON THE TPS WEBSITE!) from what I can read, can someone clear this up for me
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Stop being cheeky :slap:
Discontinued part :signLOL:
Try get our hands on a gfb dv + and never look back :smiley:
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It always depends who you ask, as opinion seems to creep into the argument. But the broad consensus (including the opinion of Niki at R-Tech) is that the revision G is the one to get.
I'm not sure on the part number, but I did hear a rumour they're discontinued. You might have to do a bit of digging to find one.
My experience with the rev G is all good. Had it fitted in place of a failed rev C and immediately felt the boost doing what it should. Then had a Stage 1 map and it's still working spot on almost a year later. It's probably good practice to renew the valve every year or two if you're planning on turning up the boost.
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You arguing again AJP :slap: naughty boy.
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Not really pal? Just relaying what I know about the rev G situation.
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I just spoke to an audi parts guy who checked his system for the rev G and although its an old number on his system they have them available for order £34 plus the vodka and tonic - so they have stock it appears even if the part is discontinued?
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Only kidding :drinking:
I thought it was pointless getting a whole new valve if the original one is working and just has a split diaphragm so after reading the reviews of the GFB dv + I decided I want one and it came up cheap too so had to take the bait. £65 bargain :signLOL:
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I went for a G last year, and just bought a gfb dv+, which I can state that there is less weird noises with that fitted over the G version, plus, throttle response on/off seems quicker.
The noises you may not get unless you have an open cone type air intake, so it you don't want to spend the money on a dv+, I would go with a rev G
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Only kidding :drinking:
I thought it was pointless getting a whole new valve if the original one is working and just has a split diaphragm so after reading the reviews of the GFB dv + I decided I want one and it came up cheap too so had to take the bait. £65 bargain :signLOL:
I think you must have replied while I was typing mine out.
Anyway, I have heard that the latest gfb is holding up well in tests. The earlier/original (and certainly Chinese copy) versions were the ones that didn't work too well.
So if the rev G is indeed unavailable when mine's due I might just look into it.
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I went for a G last year, and just bought a gfb dv+, which I can state that there is less weird noises with that fitted over the G version, plus, throttle response on/off seems quicker.
The noises you may not get unless you have an open cone type air intake, so it you don't want to spend the money on a dv+, I would go with a rev G
Are the weird noises the 'out of tune flute' resonance noises that some k03 cars get with a cone intake?
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I just spoke to an audi parts guy who checked his system for the rev G and although its an old number on his system they have them available for order £34 plus the vodka and tonic - so they have stock it appears even if the part is discontinued?
I thought they were gone. Maybe worth snapping that up then.
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I went for a G last year, and just bought a gfb dv+, which I can state that there is less weird noises with that fitted over the G version, plus, throttle response on/off seems quicker.
The noises you may not get unless you have an open cone type air intake, so it you don't want to spend the money on a dv+, I would go with a rev G
Are the weird noises the 'out of tune flute' resonance noises that some k03 cars get with a cone intake?
No, it was weird screechy high pitched type noises which myself and my brother (2.0tsi) we're getting. Both seem to no longer have this
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Only kidding :drinking:
I thought it was pointless getting a whole new valve if the original one is working and just has a split diaphragm so after reading the reviews of the GFB dv + I decided I want one and it came up cheap too so had to take the bait. £65 bargain :signLOL:
I think you must have replied while I was typing mine out.
Anyway, I have heard that the latest gfb is holding up well in tests. The earlier/original (and certainly Chinese copy) versions were the ones that didn't work too well.
So if the rev G is indeed unavailable when mine's due I might just look into it.
What was the first one?. just gfb dv?
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I went for a G last year, and just bought a gfb dv+, which I can state that there is less weird noises with that fitted over the G version, plus, throttle response on/off seems quicker.
The noises you may not get unless you have an open cone type air intake, so it you don't want to spend the money on a dv+, I would go with a rev G
I've certainly found all the wierd noises I had have now gone thanks to the GFB dv + and no more torn diaphragm.
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It's always been called the DV+ as far as I know.
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Hmm so the gfb failed back in 2013 and now the revised said version should hold its own and I think personally it does as it seems leak proof and may well enough hold boost.
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Here's some food for thought.
Important updates to DV+ T9351
GFB Technical Bulletin
DV+ (part # T9351) leak issue
5th September, 2013
Since the DV+ was released, it became apparent that there were significantly more variables than our initial testing revealed. This is because we have a patent pending on this product, and we were limited in how many different cars we could use during development since you cannot disclose the product to the public until the patent has been lodged.
The Audi/VW community has made us aware of a leaking issue with some of our DV+ valves, for which we’ve now engineered a solution.
The leaking issue is the result of a number of contributing factors, however it can be generally said that the problem is most common on cars using the K04 turbo. This is because in most cases, cars equipped with the K04 turbo run higher boost.
What we found is that it is possible for the plunger inside the solenoid coil to be forced open by high boost pressure, which results in a drop in pressure behind the main piston, causing the valve to partially open.
Whilst our initial testing showed the plunger to be capable of holding in excess of 30psi, we’ve since found that variations in the factory spring and a slight difference in the diameter of the o-ring used on the front of the plunger leads to significant differences in the ability of the plunger to stay shut under load.
Initially, a stronger plunger return spring seemed like a good solution, but after testing as many solenoid coils as we could, it appeared that the electromagnetic strength of the coils varies significantly, especially when hot. Therefore some coils were not able to reliably open the valve when a stronger spring was used.
Our solution? We have made changes to both the spring and the plunger to ensure that it does not get pushed open under boost, and that it continues to open reliably when the solenoid is energised by the ECU.
The changes to the DV+ T9351 kit are detailed below:
We have manufactured a spring that holds the plunger down with more than twice the force of the original factory spring
To ensure the solenoid is able to reliably retract this harder spring, the plunger has been made slightly longer to shorten the stroke. This means the electromagnetic retraction force of the coil on the plunger is significantly increased
The diameter of the silicone o-ring on the front of the plunger has been reduced so the area exposed to the boost pressure is smaller, which further increases its ability to resist being pushed open (smaller area means for a given pressure there is less force being applied)
All new T9351 DV+ kits come with the new plunger (which can be identified by its black colour as opposed to the silver finish of the original plunger) and spring.
For the earlier DV+ T9351 models, all that is required is to replace the existing plunger and OE plunger spring with the parts supplied in the GFB upgrade kit
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so I want to stick to OEM, so I'm sensing the consensus is to get the rev G if I can find one?
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I would mate. Works very well on my mapped k03.
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Why can you not use rev D?
Sent from my SM-G935F using Tapatalk
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I'm still running on a REV B :signLOL:
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@Rasco (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=13864)
Genuineautoparts have rev G for £32. They legit.