MK5 Golf GTI
All Things Mk5 => Mk5 General Area => Topic started by: ghuk on September 03, 2016, 12:53:31 pm
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Hi all
Thought I would share my thoughts. I've had my Golf GTI for about 15 months now and to be honest I've always thought the car was a little bit sluggish in terms of performance. I run a company in the week and its pretty long hours (including some weekends) so I don't have a great deal of spare time.
In the time I've owned the GTI its visited 2 different garages in the MK area for services etc with no fault codes showing up. One of the garages mentioned I should consider a re-map as he found the car sluggish when he took it for a test drive. Over the last few months I've noticed the car making a whoosh sound on acceleration and its been getting worse to the point where I could clearly hear it inside the cabin. I've read various listings on here that its a sign that the diverter valve is on its way out. Well chaps I can honestly say you weren't wrong! :happy2:
So yesterday I bit the bullet, phoned AMD Tuning and arranged to get a GFB diverter valve fitted today, the technician mentioned that on Saturday it was a first come, first served basis. So I got down there for opening time for 9am :grin:
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fzz210%2Fghuk1%2FDSC_2827.jpg&hash=c8cf4456a589c53ef8f2b38d74ec8543b714572e)
Within a few minutes of arriving my car was up in the air and the technician was busy taking the old part off.
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fzz210%2Fghuk1%2FDSC_2826.jpg&hash=c98fe8bdb0ebdd0ccdbd94a3d9d1dd6211a9d867)
The rubber valve was totally shot, it was literally in pieces! The chap @ AMD Tuning mentioned that you lose in the region of 30 bhp with a torn diverter valve according to previous tests on their dyno so its definitely worth checking. I only wish I had the required skills to change parts like this myself
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fzz210%2Fghuk1%2FDSC_2822.jpg&hash=59fabe56f5aa30db90498e76259623a53bc8c529)
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fzz210%2Fghuk1%2FDSC_2821.jpg&hash=d36e01a36d92f8c89a79a87905b887e3158f789a)
Here are some pics of what you get, you can see the piston style diverter valve as well for comparison
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fzz210%2Fghuk1%2FDSC_2823.jpg&hash=09031cf4efd6dd3180a1dd86c57453591b19f54a)
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fzz210%2Fghuk1%2FDSC_2824.jpg&hash=6241cb70c993c4096ed588d769f491af613311bc)
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fzz210%2Fghuk1%2FDSC_2825.jpg&hash=3b80dc194108dc98ffd44107e06dad6fee7f7797)
All in all, the whole job must have been completed in around 15-20 mins and that included making sure any codes that flashed up on the computer were removed.
As for the performance difference well what I can say but WOW!!! The car actually takes off after 3,500rpm. I honestly cant believe the difference and I'm more than a little annoyed with myself for driving around for the last year or so with a car not running on full boost.
I just want to thank AMD Tuning for turning my car around so quickly this morning. I would definitely recommend their services if you are local to them.
Cheers
George
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How much for supply and fit?
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How much for supply and fit?
It worked out just over £133.00 fitted. The diverter valve itself was £97.80
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Thanks for sharing this. May have a look into this as well, as I have the car a bit sluggish recently.
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No need to go somewhere to get it fitted. On a k03 car you can get to the dv through the wheel arch. Or on a k04 its an even quicker job as it's in front of the engine bay. Once you are at the dv it's a 2 min swap over with the diaphragm.
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As for the performance difference well what I can say but WOW!!! The car actually takes off after 3,500rpm. I honestly cant believe the difference and I'm more than a little annoyed with myself for driving around for the last year or so with a car not running on full boost.
Without pointing out the obvious, You would have got the same gains by fitting a standard Revision G Diverter Valve! The improvement is not down to the GFB Diverter and more the fact your old one was totally ruined.
I have heard good things about the GFB though :happy2:
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As for the performance difference well what I can say but WOW!!! The car actually takes off after 3,500rpm. I honestly cant believe the difference and I'm more than a little annoyed with myself for driving around for the last year or so with a car not running on full boost.
Without pointing out the obvious, You would have got the same gains by fitting a standard Revision G Diverter Valve! The improvement is not down to the GFB Diverter and more the fact your old one was totally ruined.
I have heard good things about the GFB though :happy2:
Hi mate
I don't deny that, I just didn't want the hassle of getting it changed again in a year or so time when that one fails. As I understand it (and let me know if I'm wrong) the GFB DV is the only one to offer a permanent fix. As I'm totally hopeless when it comes to fixing cars I wanted to get it replaced and not have to worry about it.
I also hope to find a garage in the Bedfordshire area that know the Golf GTI inside out as the 2 garages I've used so far both told me that the diverter valve wasn't causing the issue with lack of power.
Any idea chaps would me much appreciated :happy2:
Cheers
George
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Yeah it would save time having to keep checking it every service but I'm running 310bhp and not torn mine one bit in about 8 months of the higher boost.
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Personally I think you made a good choice with the DV+ unit, as you mentioned in your post that you don't have much time for 'fettling' etc and this is a fit and forget unit. Glad it's sorted and you're very happy with the results!!
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Had one of these fitted last week and I absolutely love it. Really sharpens the response up and my old Rev G was mint so it defo makes a difference
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Plus the added MPG I started getting an extra 8MPG after fitting a Rev G diverted valve as mine was torn. You should also check the cam follower and PCV valve if you haven't already.
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As for the performance difference well what I can say but WOW!!! The car actually takes off after 3,500rpm. I honestly cant believe the difference and I'm more than a little annoyed with myself for driving around for the last year or so with a car not running on full boost.
Without pointing out the obvious, You would have got the same gains by fitting a standard Revision G Diverter Valve! The improvement is not down to the GFB Diverter and more the fact your old one was totally ruined.
I have heard good things about the GFB though :happy2:
Hi mate
I don't deny that, I just didn't want the hassle of getting it changed again in a year or so time when that one fails. As I understand it (and let me know if I'm wrong) the GFB DV is the only one to offer a permanent fix. As I'm totally hopeless when it comes to fixing cars I wanted to get it replaced and not have to worry about it.
I also hope to find a garage in the Bedfordshire area that know the Golf GTI inside out as the 2 garages I've used so far both told me that the diverter valve wasn't causing the issue with lack of power.
Any idea chaps would me much appreciated :happy2:
Cheers
George
AKS Tuning, Alex off here.