Timing being pulled back? With links to the graphs

Claus Vegener vegener at post7.tele.dk
Tue Dec 3 18:14:49 EST 2002

Cold and rain some degrees above / some below freezing point.
Next week we drive to south Spain for 3 months bringing
horses and computers - to do our jobs at distance and expect to
return at spring.
The dyno was taken 2 years ago indoor but at a humid and warm
day in June (28 deg. C)
4. gear; IA stage III - IV ? 2.5 Bar sensor and chips but else
quite standard.
The test centre NAAK is one of the best in Denmark. The
4-wheel equipment are taken to the Danish DTChampionships
for controlling the Hp/weight ratio for a whole season for the
racers. So he have a very good and broad knowledge of what is going on.
He was impressed, that the tuner (Ned Ritchie) had did his job so well, that the engine only loose a few Hp. He sees many cars
loosing 100 Hp and they have to completely shut them down to cool.
The other / lower curves are the original standard curves taken
a month before I installed the IA.

Your test show - to my opinion heat/boost surge.
I have run with my WG spring-loaded and 300 Hp without
electronic WGFV and the boost on a kkk24 decrease from
24 psi to 20 in the same manner as if it was programmed.

Re-mounting my Garrett T04/50 without changing WG spring setting gave a boost of 21 psi and lot more power (350 Hp).
Smaller turbos get hot - and then the IC is too small.
(RS2 injectors, MAF and IA stage V chips and adjustable. fuelpressure)

Water injection? - NO. Only with 5 boost-map programmed
injectors. (According to NAAK) I thought I could save myselves a bigger IC and installed Aquamist 8 Bar system - but no change.
Kind regards
----- Original Message -----
From: "Brian Link" <BrianL at starsys.com>
To: "Claus Vegener" <vegener at post7.tele.dk>
Sent: Tuesday, December 03, 2002 5:01 PM
Subject: RE: Timing being pulled back? With links to the graphs

Wow, yours is more dramatic than mine.  So maybe it is not timing, maybe
it is boost or heat.  When you did the dyno pull, what gear did you do
it in?  Was it obvious what was happening?

How is Denmark?


-----Original Message-----
From: Claus Vegener [mailto:vegener at post7.tele.dk]
Sent: Tuesday, December 03, 2002 3:14 AM
To: Brian Link; 200q20v at audifans.com
Subject: Re: Timing being pulled back? With links to the graphs

I have a timing retard from a dyno run
on a very hot day here:


Claus Vegener
----- Original Message -----
From: "Brian Link" <BrianL at starsys.com>
To: <200q20v at audifans.com>
Sent: Monday, December 02, 2002 7:40 PM
Subject: Timing being pulled back? With links to the graphs

> Gang,
> What is a good way to check to see if my timing is getting pulled back

> during boost?  Also what boost levels are others making on pump gas?
> I'm using the street dyno software which shows my car making lots of
> power in second gear.  In third gear, where I hold the most boost the
> longest (~22 psi which drops down to 18 psi at redline), I can see in
> the hp/torque graph a dip where I think the computer is pulling back
> timing.  Is there a easy way to data log timing?  Does the VAG-COM
> software do this?
> Here is my 2nd gear run:  Looks good, making lots of power...
> http://www.geocities.com/brian_link2002/2nd_gear.jpg
> Here is my third gear run...at about 3800 rpm my torque in green takes
> dip that I don't see in the second gear run.   I think it is timing,
> because this is max boost.  I will try adding a few gallons of racing
> fuel and re-test to see if it changes.  Thoughts?
> http://www.geocities.com/brian_link2002/3rd_gear.jpg
> Thanks
> Brian
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