Rolling Road.....disapointing results..

[duncan]

well.... have only had the car 2 weeks but has had its fair share of problems

suspected something was wrong with the car so booked it into the rollingroadsurrey to have the power checked and to see if its running rich / lean

firstly the power output was only 185bhp (my car has had the WALD conversion so should be running at 240bhp)
the torque peaks at 170lb/ft and then drops to 125lb/ft as the revs get to 6000rpm

also he said that the car is running very very rich.

what do you guys think the problem could be? when talking to my VW garage they said that its possible that they might have to wipe the map although the work would still be done under warranty.

problem is that the garage i bought the car from say that the wald conversion is covered and the VW garage near where i live say that they do not know of any remaps that are covered under warranty.

although my vw garage are being great and have said they will go out of their way not to flag it up so all the work is carried out under warranty.

the guy at the rolling road place said that i should have noticed that the power was down alot but to be honest has felt pretty good. problem is that i havnt been in any other GTI's so wouldnt really know the difference

the car is booked in at VW so hopefully is an easy fix, just disapointed that im going to be without the car again...

problems so far: coil packs went and were replaced.
what i thought was a slow puncture was a leak on the seal between the alloy and the tyre (once the trye was reseated a few times this fixed the problem)
also have a sort of grinding noise when im full lock left
now this new problem - low power

any help / advice on this would be great

Cheers

Duncan 

[bacillus]

Did you get your DV checked for tears?

[duncan]

not at the rolling road - he didnt want to touch it since it was under warranty..

could that be causing the problem? would tears mean that the car would be running rich and very low on power?

excuse my ignorance but what is a DV? is that a common problem with the GTI?

[john_o]

crikey duncan , gti ownership isnt being kind to you so far !
First off dont panic.
185bhp may not be too bad (depending on dyno type) but you should have lots more.
The car should feel really 'punchy' , you really need to try another std car, will the dealership take you out in one?

So if it was my car

1. Reflash back to stock OE map
2. Full diagnostic across the car to sort any issues and get a standard bhp/torque reading
3. From there you can then re-apply WALD or other remap

Im sorry but I have never heard of the WALD conversion , do you have any more info on that?

Problems can be PCV valves/dump valve (you could be producing boost but just releasing to atmosphere)/ turbo issues etc the list is endless and you need to be systematic in the diagnosis
You need a VW specialist who knows about the 2.0 TFSI who should be able to help you quickly 
Where are you again?

the grinding noise could be something simple or could be a known recall issue for steering racks (sorry  ) depending on the yr of your car.

In any case if the car is running very rich you need to get it looked at ASAP and try not to do many miles....

Common issues at the link below
http://www.golfmkv.com/forums/showthread.php?t=24952

Steering rack symptoms here
http://www.golfgtiforum.co.uk/index.php?topic=32092.0

from JKM's website you can view lots of plots
http://www.jkm.org.uk/performance/GalleryGTI00309.htm

std mk5 gti power plot (not quite std but close enough)
http://www.jkm.org.uk/performance/Misc/Gallery/rollingroaddays/Golf%20GTi%20RR%20Day%20March%2009/Dyno%20Charts/TTK.gif

what does yours look like?

[duncan]

to be honest i dont know exactly what the WALD conversion entails but apparently is just a remap.

my local VW garage (colbornes in walton-upon-thames, in surrey)

have been very good and when it goes in they are going to try not to lose the remap - how would they be able to save it and then reapply it?

am i better off getting them mapping it back to standard and getting a 3rd party remap from revo, superchips etc etc?

the guy at the rolling road place said that this power drop could be due to the airflow meter going or loss of boost - i guess tears in the DV could cause this?

really hope its not a big deal...

[WhiteGTI]

This is a stock manual graph

[WhiteGTI]

Sorry to hear about your problems Duncan. You will probably find that its something simple and cheap such as the diverter valve or the PCV. Personally, I'd take it to a place like JKM who can diagnostic and datalog it, and within 1hour the problem will be identified.

Although I appreciate that your car has a warrenty and so it should be used. Surely the WALD is covered under warrenty?

[john_o]

worry ye not , its highly unlikely to be a big deal , plus you have a warranty and a sympathetic dealer.
Unless dealer applied WALD remap in first place , no they wont be able to save it , then can only overwrite it.
You need to find out who/where applied it first.

APR/REVO/Superchips (richter?)/GIAC are all well known names in the 2.0T remap business. But you will have to research each if you want to change. you may find the WALD is just one of these tuners behind the scenes and the product rebadged.
But yes a well known name is better imho.
Until you can nail down who produces WALD its a bit of an unknown

Lots of reasons for power loss , and it may not be just one. step by step confirmation all is ok is the only way.

[VC]

i can't add anything, it's all good advice ^^^^^

but it shouldn't be scary though so fear not

[duncan]

thanks for that guys.

it does sound like it could be a boost leak hopefully a problem with the DV which should in theory be an easy fix but as you said has to go through a full diagnostic to find out

the only info i have on the WALD remap is that it was done in germany then the car was exported to the uk.  the dealer that i bought the car from is in north yorkshire and im based in london so cant go back to them to get it looked at.  my local dealer seems great though and have said they are going to do their best to save the map but i guess push comes to shove it will have to go and be replaced with a standard map..

if it was just a faulty DV once that is replaced could i see the power go straight up to 240bhp?

when i was at surrey rolling road today he did say that it is most likely a boost leak or a faulty airflow meter.  the car also showed to be running extremely rich.  

if i do go down the remap route if the car does get taken back to standard could there be any problems claiming off my warranty which has a year left? do you notice that big a difference vs stock map?

am really hoping that the WALD map can be saved.

[WhiteGTI]

Difference for remapped vs stock is huge....

If you had a faulty air flow meter (MAF), then the drive would probably be a little jerky and not a smooth power delivery. A good way to check is to unplug the MAF and then drive the car a short distance and see if performance/driveability has improved.

A good first step is to check the stock DV for tears in the diaphram. Even if its not the problem, its another tick box checked! 

[tony_danza]

Did you buy this below? I have no idea what Wald are, other than the Japanese Wald International that make wheels/bodykits etc. There's Googlystuff floating around from the likes of Malaysia mentioning Wald remapped Golfs, so it could be someone is trading on that name?? Certainly nothing German though.

TBH - the garage/previous owner has probably plucked a name out of the sky and it's A.N.Other generic remap off an ebay disc or something? I'd be inclined not to save it, get it fixed and go buy something you know works and has customer support if required. Piece of mind is invaluable.

http://www.pistonheads.com/sales/612855.htm

[duncan]

Difference for remapped vs stock is huge....

If you had a faulty air flow meter (MAF), then the drive would probably be a little jerky and not a smooth power delivery. A good way to check is to unplug the MAF and then drive the car a short distance and see if performance/driveability has improved.

A good first step is to check the stock DV for tears in the diaphram. Even if its not the problem, its another tick box checked! 

will mention these bits to my dealer,

how do you unplug the MAF? and what does that do? havnt noticed the drive been jerky and power delivery has seemed pretty smooth. will ask them to check the DV and get it replaced if it is showing any sign of wear..

if the DV had tears once that is replaced could i just see the power go up instantly without any changes to the ECU?

i feel a bit stupid that i havnt noticed that its not been running at 240bhp but then glad that the car is about to get alot faster with alot more torque

[duncan]

Did you buy this below? I have no idea what Wald are, other than the Japanese Wald International that make wheels/bodykits etc. There's Googlystuff floating around from the likes of Malaysia mentioning Wald remapped Golfs, so it could be someone is trading on that name?? Certainly nothing German though.

TBH - the garage/previous owner has probably plucked a name out of the sky and it's A.N.Other generic remap off an ebay disc or something? I'd be inclined not to save it, get it fixed and go buy something you know works and has customer support if required. Piece of mind is invaluable.

http://www.pistonheads.com/sales/612855.htm

no i didnt buy that one - my car was bought from VW themselves but similar area - did actually ring up that garage to ask them more about the WALD edition but they didnt have any real info on it.

am told by my dealer that it was definitley a VW approved remap and that it is done before the car is imported to the uk, it has a sticker on the engine saying WALD.  may well get it removed and get something third party - but this map could end up being great and dont want to throw 500 quid down the drain.. am totally broke at the moment.

[tony_danza]

I don't know Duncan, if you'd have said it went to Oettinger or ABT before it was sent over here, then I suppose we'd have heard of them, especially as Oettinger are (as far as I know) the only VW approved tuner in Germany.

Anyway, this is an aside. You're hopefully going to get the car fixed, it'll have been something simple like the DV meaning they don't have to touch the map and you'll be fine and dandy to the tune of 240 horses... I'm sure you won't care if Fred Flintstone had mapped the car once you've had that power induced smile forced onto your face 

Keep us posted!