Timing retard

Mihnea Cotet c_mihnea at yahoo.com
Mon Dec 2 12:38:15 EST 2002


Okay so at least you're not running that damna$$ :)
I need to know as well what can be datalogged with
VAG-COM from a 3B ECU, I know the AANs are more
complete in these regards, offering more values that
can be logged, but maybe someone who has tested it
knows and will let us know... Brett??? I know you're
using it but did you try to do some datalogs with your
200?
Did anyone ever try to make a separate "blackbox" that
logs all the inputs/outputs from the ECU and can
display them graphically? I know the 034 EFI offers
that but my budget isn't set up yet for a programmable
EFI system, plus I'm starting to work on my chips
myself so there's no real need for that, except for
the datalogging feature :)


Mihnea

--- Brian Link <BrianL at starsys.com> wrote:
> Thanks,  My turbo is a T3/T04 -.49   (replaced after
> my k-24 after it
> started making a lot of noise at 18psi) I think
> 16psi is about the most
> the k-24 can take for long at 5300 ft.
>
> Heat soak is still a culprit, as you suggested.  We
> need a good data
> logger.
>
> Brian
>
> -----Original Message-----
> From: Mihnea Cotet [mailto:c_mihnea at yahoo.com]
> Sent: Monday, December 02, 2002 12:49 PM
> To: Brian Link; 200q20v at audifans.com
> Subject: Re: Timing retard
>
>
> Brian,
>
>
> I guess that if you're running the stock K24 turbo,
> you might be experiencing timing retard due to heat
> soak. Try doing the same runs in 3rd and 4th gear
> and
> I won't be surprised if you get a very nice torque
> curve in 3rd and a "pulled back" curve in 4th, maybe
> even at lower RPMs due to the fact that you'll pull
> for a longer time in 3rd gear than in 2nd. 22psi is
> really too much for the stock turbo (BTDT) so that
> won't surprise me if that was the culprit in your
> case.
>
> HTH and let us know how it works out, and let me
> also
> know if you find something out regarding the VAG-COM
> abilities to datalog timing, that would interest me
> as
> well for a similar street dyno software but that one
> is a freeware and it's in french only...
>
>
> Mihnea
>
>
> --- Brian Link <BrianL at starsys.com> wrote:
> > 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?
> >
> > I will try and post my dyno graphs for second and
> > third gear if anyone
> > is curious.
> > Thanks In Advance
> >
> > Brian Link
> > _______________________________________________
> > 200q20v mailing list
> > 200q20v at audifans.com
> http://www.audifans.com/mailman/listinfo/200q20v
> >
> >
> >
>
>
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