JP Roberts

However, as there is still some slight surge in 5th gear at full throttle. I
suspect my MAF or DV could be on their way to paradise, too. Then, again
throttle body has not been flawless in pre '00's 1.8T engines.

After reading some Audiworld post, do those of you here think it wise to
install some aftermarket DV?

Thanks,

JP

"JP Roberts" <1234@yahoo.com> escribió en el mensaje
news:bmlrd2$l28$1@news.ya.com...
> Problem solved!
>
> It was a faulty wastegate valve connector!
>
> Thanks to all,
>
> JP
>
> "JP Roberts" <1234@yahoo.com> escribió en el mensaje
> news:bmhrfk$k8e$1@news.ya.com...
> > Do you guys know if it is now possible to get a wastegate rod replaced
> > without getting a whole new turbo? I hear that was not possible a couple
> of
> > years ago, but since things keep getting better all the time ...
> >
> > JP Roberts
> >
> > P.S.: Might be time to upgrade to a k04?
> > Oh, I would be so happy if it were just some piping!
> >
> >
>
>

Peter Bell

In message <H0Bjb.4107$mM1.4022@newsfep4-winn.server.ntli.net>
"Hairy One Kenobi" <abuse@[127.0.0.1]> wrote:

> "Peter Bell" <peter@bellfamily.org.uk> wrote in message
> news:11a433424c.peter@iyonix.earley.fourcom.com...
> > Err... that's an interesting description. My wife's A2 1.4TDi exhibits
> > a 'goose honk' everytime you open the throttle to pull away from rest.
> >
> > I presume that a TDi has a DV - is it likely that it has failed?

[Snip]

> Check whatever it is that JFP is saying first

Yep, will do - but I doubt that it's the MAF, the car had only done a
few thousand miles when the 'honk' was first pointed out to me (by my
salesman), and I can't believe the MAF 'honks'. However, the MAF could
be responsible for poor consumption and lack of power at certain points.

> (must confess that I couldn't follow the abbreviations)

I didn't get 'MIL', but JPR is probably right on that one!

> On a TT (YMMV ;o), the DV is a small chunk of plastic, something like (from
> memory) 1.5-2 inches in diameter, just "south" of the main inlet hose.

Oh, I know what a DV looks like - I fitted Forge DVs on my A6. I just
haven't looked to see whether I can find one on the A2.

As an aside, I have chatted (separately) to a couple of the Audi tuning
gurus about swapping DVs on the RS - the advice is that the standard
units fitted are pretty good and don't need to be changed unless
chipping.

> The honk is caused by the membrane fluttering when it should be sealing.
> Makes a big difference to performance (can't remember the MPG, though)

Performance affected at any particular revs, or throughout the whole
range? Once the revs get to 2000 (up to around 4600), the little car
does pull quite well (it is only 1422cc, 3 cylinder, after all), but it
is a little 'flat' below 2000.

I guess I could look on ETKA for presence of a DV! I should also get
around to connecting up my VAG-COM to check for fault codes.

--
Peter Bell - peter@bellfamily.org.uk

Hairy One Kenobi

"Peter Bell" <peter@bellfamily.org.uk> wrote in message
news:1aac7e424c.peter@iyonix.earley.fourcom.com...
> In message <H0Bjb.4107$mM1.4022@newsfep4-winn.server.ntli.net>
> "Hairy One Kenobi" <abuse@[127.0.0.1]> wrote:

<much snippage>

> Oh, I know what a DV looks like - I fitted Forge DVs on my A6. I just
> haven't looked to see whether I can find one on the A2.
>
> As an aside, I have chatted (separately) to a couple of the Audi tuning
> gurus about swapping DVs on the RS - the advice is that the standard
> units fitted are pretty good and don't need to be changed unless
> chipping.
>
> > The honk is caused by the membrane fluttering when it should be sealing.
> > Makes a big difference to performance (can't remember the MPG, though)
>
> Performance affected at any particular revs, or throughout the whole
> range? Once the revs get to 2000 (up to around 4600), the little car
> does pull quite well (it is only 1422cc, 3 cylinder, after all), but it
> is a little 'flat' below 2000.
>
> I guess I could look on ETKA for presence of a DV! I should also get
> around to connecting up my VAG-COM to check for fault codes.

IIRC, power was down across the entire boosted range, but more apparent at
what should have been peak boost (OTOH, the standard TT 225 curve is pretty
flat, so that's not a great surprise)

Mine didn't honk before replacement - I just noticed that the car was
performing below the quoted figures. Changed the DV, and the car was
transformed..

If it is a DV, then I doubt that there's much that could be read from a VAG
unit, assuming that you don't have access to any figures from a known-good
A2.

H1K

JP Roberts

Dear Peter,

Always nice to read your posts.

> Oh, I know what a DV looks like - I fitted Forge DVs on my A6. I just
> haven't looked to see whether I can find one on the A2.

Could you elaborate on why you did fit Forges into your A6? And I guess that
must be another A6, not your RS, so is it the 2.7T or the 1.8T, do you have
that chipped?

> As an aside, I have chatted (separately) to a couple of the Audi tuning
> gurus about swapping DVs on the RS - the advice is that the standard
> units fitted are pretty good and don't need to be changed unless
> chipping.
>

Are you meaning to say that an aftermarket DV would be necessary to keep up
with the extra boost produced by chipping?
I was at my mechanic's only yesterday and he told me turbo lag - rather
noticeable on 1.8T's, could be reduced by using an aftermarket DV, do you
know how much science is in that statement? Maybe that's the one question
for your "gurus"

Cheers,

JP Roberts

PS. Ever so grateful you recommended that little box to me!

JP Roberts

> H1K

> If it is a DV, then I doubt that there's much that could be read from a
VAG
> unit, assuming that you don't have access to any figures from a known-good
> A2.
>
Hi H1K,

I suppose he could still have his A2's torque measured on a roller and
compare that to stock specs, after all it hasn't been chipped.

Then, again, by means of the VAG-C unit, and since latest stock turbo Audis
boast about an almost flat torque curve, he could check to see if there are
any crooks that might indicate some kind of sudden boost changes?

I am seriously considering getting a Forge DV myself, but for one thing
VAG-COMs are very rare here, and for another I'm not so sure what benefits I
could get from it.

JP Roberts

Peter Bell

In message <bmom40$h4p$1@news.ya.com>
"JP Roberts" <1234@yahoo.com> wrote:

> Dear Peter,

Replied by PM.

--
Peter Bell (Note Spamtrap - To reply, replace 'invalid' with 'bellfamily')

Hairy One Kenobi

"JP Roberts" <1234@yahoo.com> wrote in message
news:bmomhp$id1$1@news.ya.com...
> > H1K
>
> > If it is a DV, then I doubt that there's much that could be read from a
> VAG
> > unit, assuming that you don't have access to any figures from a
known-good
> > A2.
> >
> Hi H1K,
>
> I suppose he could still have his A2's torque measured on a roller and
> compare that to stock specs, after all it hasn't been chipped.

I was talking more about a direct comparison - just to see if there *really*
was a problem

> Then, again, by means of the VAG-C unit, and since latest stock turbo
Audis
> boast about an almost flat torque curve, he could check to see if there
are
> any crooks that might indicate some kind of sudden boost changes?

...back to that RR, I'd say. Any slip on the rollers is much more
significant, IMHO.

> I am seriously considering getting a Forge DV myself, but for one thing
> VAG-COMs are very rare here, and for another I'm not so sure what benefits
I
> could get from it.

None, unless there's something wrong.

If an aftermarket outfit says you can get a (measurable!) performance hike,
then ditch 'em. If they say you /might/ just increase reliability - if
you're lucky - well, then, listen ;o)

They might still be wrong - but it's all down to the reasoning..

...personally, my two biggest Audi upgrades were: 1) working-as-specified-DV,
and 2) tyres-that-connect-to-the-road-via-something-more-than-habit[1].
ContiSport tyres are probably good as /something/ on TTs. Not sure what..
bit big for ashtrays.. bit uncomfortable as seats.

Certainly no bl**dy use as tyres, unless all you're doing is making sure
that the floorpan is above the ground and you want something round-and-black
for photographs.

ContiSport/Audi. Hmm... fish/bicycle, female/UK clergyman (ducks behind
parapet ;o)

H1K

[1] Best in "willing-but-pointless" category - up to this point - were the
very Italian Pirellis on my Fester, which gripped better in the dry than an
Inland Revenue inspector, and were about as reliable as a 10-year old
Allegro (but with none of the saving graces[2]). Perfectly happy with dry
performance (assuming that you're the sort of person that, upon surviving a
plane crash in the middle of a sea/Staines reservoir[3], doesn't mind if
your lifejacket has a leak), but about as useful as a sherbet umbrella in
the wet. Tip: best observed from outside the car ;o)

[2] No, I can't, either. Answers on a postcard..

[3] Where else are you going to get a chance to try out that lifejacket
between Heathrow and Edinbro'. Assuming that someone's not nicked it. [The
lifejacket, that is..!].