[s-cars] 3071 turbo & Pastore RS2 code question

[Dave Forgie]

Emre:  You must have missed the fact that we run 94 Chevron with  
techron already in it.  Plus we have relatively cool weather.  All reasons
 why we shouldn't be pinging on "pastore" software that was sold as plug
 and play, no issues software.  Rather than ruin my engine with the  
pinging I was "dreaming", I switched to MRC software.  Rich, yes. Pinging,
 no.  Sean D.'s Dahlback (MTM) software makes a few more ponies but the
 cost of the software was very high (US$900 IIRC).   

Dave F.

>>> "Emre Washburn" <yumyjager at gmail.com> 03/21/06 01:25PM >>>
Dave,

No one is saying you and your cronies aren't pinging, we are saying
that not EVERYONE pings with that software. Maybe it's your crappy
Canukistanian gas?

Remember, MRC software runs VERY rich, so pinging would be a non-issue
with that software, but so would a loss of power. I want to go UP the
slippery slope, not DOWN.


--
Emre
92 //S4
90 Cq
40 valves 'O plenty!



On 3/21/06, Dave Forgie <forgied at ae.ca> wrote:
> Apologies to all:  I must have been mistaken about the pinging because
> between all the goodies Dave D. lists below and the twin knock-sensors,
> there is obviously no way in H*LL that I should get any pinging with the
>  obviously vastly superiour "pastore" software.  Must have been
> something else I heard.
>
> Of course, when I did change the software to MRC software and made no
>  other changes,  the fact that the thing that I apparently didn't hear
> before because I am SO STUPID, went away, well, gosh, I don't know
> what to say.  Must have all been a dream.
>
> Oh, yeah.  The two other guys local to me with the same hardware and
> software (originally), they must have been dreaming that they heard
> pinging too.  I am sure that they will apologize as well.
>
> Dave F.
>
> >>> <djdawson2 at aol.com> 03/21/06 12:47PM >>>
> That statement would be true if there were no means to correct mixture.  However, those means do exist.
>
> 1) The MAF measures the mass of air... thin or dense, mass remains constant... and that's one way the ECU determines the fuel requirement.
> 2) The ECU incorporates a barometer... which identifies changes in altitude, and modifies A/F R.
> 3) The ECU takes input from the O2 sensor... and also changes A/F R based on those readings.
>
> Now, if we had an 034EFI system, installed and programmed it in a car at high altitude... trailered it to sea level and hit the dragstrip... THEN we'd have a meltdown.  Only one map (fuel,ignition,boost)... no compensation ability for altitude... no means to deal with denser air (not even a MAF).
>
> This is why I have stayed away from standalone engine management.  Hap's car will be an interesting "test mule" to see how the AEM system can deal with it.  Regardless, I would still expect him to have problems when he goes to sea level... and substantial additional programming will be required to make it work right down low.
>
> Dave
>
> -----Original Message-----
> From: Dave Forgie <forgied at ae.ca>
> To: s-car-list at audifans.com  
> Cc: pkrasusky at ups.com  
> Sent: Tue, 21 Mar 2006 13:25:31 -0700
> Subject: [s-cars] 3071 turbo & Pastore RS2 code question
>
>
> The "fact" part was about air at sea level being more dense than say air in
> Denver or maybe even Connecticut and that for a given amount of fuel,
> this will result in a higher (leaner) Air/Fuel ratio at sea level.
>
>
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