Stage 3- Baseline Logs. Comments Please! - Page 2

zhenya · 09-30-2005, 12:55 PM

Imolavirus@BuehnEngineering · 09-30-2005, 12:56 PM

zhenya · 09-30-2005, 12:58 PM

zhenya · 09-30-2005, 12:59 PM

PSmalls::DoggieStyle · 09-30-2005, 01:02 PM

post it please. Thank you. I can't remember if your car ran like a champ out of the box or took a couple tweaks, just was curious.

zhenya · 09-30-2005, 01:04 PM

silvino · 09-30-2005, 01:07 PM

Timing looks good compared to other logs I've seen around. I assume you're using some type of mixture of 100 octane

.

nyet · 09-30-2005, 01:09 PM

seriously. good job.

nyet · 09-30-2005, 01:10 PM

you could pull some fuel if you have access to decent pump gas.

what are your trims at (block 32)

PSmalls::DoggieStyle · 09-30-2005, 01:11 PM

What you want to watch is MAF (G/S) and primary 02 sensor voltages. You want to stay ~300 g/s at the most IMO and thus keeping your 02 voltages >.85 or so. How close you get to that depends on how close of an eye you want to keep on the car. Remember, temperature drops will create denser air which will in turn create higher MAF #s which will in turn cause the injectors to inject more fuel. Therefore, you come closer to maxxing out the stock MAF and injectors as temperature drops. That's why lemieux recommended turning boost down when it gets colder. The closer you are to the threshold of maxxing these out, the closer eye you need to keep on MAF/02s so you can adjust boost accordingly. If you're not comfortable doing this, just leave it be and enjoy.

Here are some examples of logs I took when I was stage 3 minus. You'll notice how when MAF gets high enough, 02 voltages drop (go leaner) because the injectors of maxxed out and the extra airflow is causing a higher air/fuel ratio:

Notice the shape of the MAF curve

Notice how the 02 voltage curve is the direct opposite.

If you convert this to duty cycle {ms*(RPM/1200)=DC%}, you'll see they are definitely maxxed.

09-30-2005, 12:55 PM	#11
zhenya AudiWorld Senior Member Garage is empty, add now Join Date: Feb 2004 Posts: 1,121	Thanks. Got it now I think. I'll try to re-graph.

09-30-2005, 12:56 PM	#12
Imolavirus@BuehnEngineering AudiWorld Super User Garage is empty, add now Join Date: Mar 2002 Posts: 17,943	quit sucking up :p __________________ -Jacob ^^^CLICK SIG FOR BUEHN ENGINEERING WEBSITE^^^ <big><big>Website Here!!!</big></big> <big>Items For Sale</big>

09-30-2005, 12:58 PM	#13
zhenya AudiWorld Senior Member Garage is empty, add now Join Date: Feb 2004 Posts: 1,121	Thanks man! It's a lot nicer now with a clutch that holds!

09-30-2005, 12:59 PM	#14
zhenya AudiWorld Senior Member Garage is empty, add now Join Date: Feb 2004 Posts: 1,121	So if I did want more...where should I start?

09-30-2005, 01:02 PM	#15
PSmalls::DoggieStyle Elder Member Garage is empty, add now Join Date: Jan 2004 Posts: 30,257	Do you have Lemmiwinks? If so, open it up and click "read." Then take a print screen shot of it and post it please. Thank you. I can't remember if your car ran like a champ out of the box or took a couple tweaks, just was curious.

09-30-2005, 01:04 PM	#16
zhenya AudiWorld Senior Member Garage is empty, add now Join Date: Feb 2004 Posts: 1,121	Yes I do. Everything is set to default values.

09-30-2005, 01:07 PM	#17
silvino AudiWorld Member Garage is empty, add now Join Date: Aug 2005 Posts: 325	Why doesn't anyone spring for a wideband to see the useful AFR data? Timing looks good compared to other logs I've seen around. I assume you're using some type of mixture of 100 octane .

09-30-2005, 01:09 PM	#18
nyet Member Garage is empty, add now Join Date: Dec 2000 Posts: 33,095	DAMN, that is amazing. your fueling/MAF look dead on. seriously. good job. __________________ ------------------------------------- "It's easier to practice medicine without a license in this country than it is to get info on tuning Motronic." -JasonS9 ECUxPlot - my java based ECUx/VAGCOM/VCDS plotter My hacked version of Flyboy's ECUx template. S4Wiki - CONTRIBUTE TODAY! Web based FATS calculator for ECUx and VAGCOM logfiles Sync your iPod under Linux! Definitive S4 DIY Thread of Doom AWOT Brain Trust #101 AWOT Axis of Evil Member #6 Member, Aw0t Fish Taco Dinner Club I say to you that the VCR is to the American film producer and the American public as the Boston strangler is to the woman home alone." - Jack Valenti, President and CEO of the MPAA this site is NOT for information sharing it's strictly for multiple monologues that result in none of the participants changing their point of view - frank

09-30-2005, 01:10 PM	#19
nyet Member Garage is empty, add now Join Date: Dec 2000 Posts: 33,095	i dont think you should touch anything, imo. you could pull some fuel if you have access to decent pump gas. what are your trims at (block 32) __________________ ------------------------------------- "It's easier to practice medicine without a license in this country than it is to get info on tuning Motronic." -JasonS9 ECUxPlot - my java based ECUx/VAGCOM/VCDS plotter My hacked version of Flyboy's ECUx template. S4Wiki - CONTRIBUTE TODAY! Web based FATS calculator for ECUx and VAGCOM logfiles Sync your iPod under Linux! Definitive S4 DIY Thread of Doom AWOT Brain Trust #101 AWOT Axis of Evil Member #6 Member, Aw0t Fish Taco Dinner Club I say to you that the VCR is to the American film producer and the American public as the Boston strangler is to the woman home alone." - Jack Valenti, President and CEO of the MPAA this site is NOT for information sharing it's strictly for multiple monologues that result in none of the participants changing their point of view - frank

09-30-2005, 01:11 PM	#20
PSmalls::DoggieStyle Elder Member Garage is empty, add now Join Date: Jan 2004 Posts: 30,257	Turn the MBC clockwise and re-log 003/031. Read inside first, though.... What you want to watch is MAF (G/S) and primary 02 sensor voltages. You want to stay ~300 g/s at the most IMO and thus keeping your 02 voltages >.85 or so. How close you get to that depends on how close of an eye you want to keep on the car. Remember, temperature drops will create denser air which will in turn create higher MAF #s which will in turn cause the injectors to inject more fuel. Therefore, you come closer to maxxing out the stock MAF and injectors as temperature drops. That's why lemieux recommended turning boost down when it gets colder. The closer you are to the threshold of maxxing these out, the closer eye you need to keep on MAF/02s so you can adjust boost accordingly. If you're not comfortable doing this, just leave it be and enjoy. Here are some examples of logs I took when I was stage 3 minus. You'll notice how when MAF gets high enough, 02 voltages drop (go leaner) because the injectors of maxxed out and the extra airflow is causing a higher air/fuel ratio: Notice the shape of the MAF curve Notice how the 02 voltage curve is the direct opposite. If you convert this to duty cycle {ms*(RPM/1200)=DC%}, you'll see they are definitely maxxed.

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