VAgcom logging - Engine load etc

vtraudt · 04-24-2011, 01:34 PM

I logged a few 3rd gear runs to determine what parameters can be logged and what they 'tell'.

For example:

"Engine Load": Group 2 - Field 1 -Engine - Load - ms. Climb to 10.5 ms at 4000 rpm, then fall to around 8 at 6.5k.

"Timing Retard": Group 20 - Field 0
Cylinder 1 - Timing Retard. Shows zeros for lower rpm, then 2.2 up to 3.7 for higher RPM.

vtraudt · 04-24-2011, 02:21 PM

Turbo is a K03/K04 hybrid, chip is 'T.A.P. Stage 2'. Stock injectors.

And since 'timing' is (?) an important parameter, what module/channel would be the one to log?

Intake air temp: I made several 3rd gear pulls to 6.5k, and several 4th mid rpm WOT pulls. IAT once reached 40 deg C, but mostly maxed out at 35 deg C.

Waste gate N75 duty cycle: starts at 99% up to 3k, then falls quickly to 78% before 4k and tapers to 60%. Does it mean (lower numbers)that N75 is bleeding off/reducing boost? Because running too lean? To prevent misfires? To keep boost under a certain given value?

Specified Torque is always 410 Nm. Does not seem to valuable info.

Actual Torque: peaks at 4k rpm with value around 215 Nm, falling to 170 at 6.5k rpm. Since it seems a calculated value: how does the value compare to 'reality'?

vtraudt · 04-25-2011, 05:29 AM

For test purposes, I logged 2 sets of data.
Which parameters can be dropped, which should I add?
Is 031-1 Lambda current value of interest? Other 031?
HP is calculated from torque. Airmass/per HP ditto.

A4Audi4Fun · 10-29-2011, 10:44 PM

http://www.vaglinks.com/OBDII/Vag-co...d_Graphing.pdf

See if this download helps you.

04-24-2011, 02:21 PM	#2
vtraudt AudiWorld Senior Member Garage is empty, add now Join Date: Jan 2010 Location: Brighton, MI Posts: 886	Turbo is a K03/K04 hybrid, chip is 'T.A.P. Stage 2'. Stock injectors. And since 'timing' is (?) an important parameter, what module/channel would be the one to log? Intake air temp: I made several 3rd gear pulls to 6.5k, and several 4th mid rpm WOT pulls. IAT once reached 40 deg C, but mostly maxed out at 35 deg C. Waste gate N75 duty cycle: starts at 99% up to 3k, then falls quickly to 78% before 4k and tapers to 60%. Does it mean (lower numbers)that N75 is bleeding off/reducing boost? Because running too lean? To prevent misfires? To keep boost under a certain given value? Specified Torque is always 410 Nm. Does not seem to valuable info. Actual Torque: peaks at 4k rpm with value around 215 Nm, falling to 170 at 6.5k rpm. Since it seems a calculated value: how does the value compare to 'reality'? __________________ 1998 Passat 1.8T manual; Kraftwerk Turbo TM2, 550cc Bosch EV14, FSI coils, 3" MAF, 3" DP, high flow manifold, S4 clutch, single mass FW, FMIC, custom TIP, Kraftwerk Tune 1999 Passat 1.8T manual; Kraftwerk Turbo TM3, 550cc Bosch EV14, FSI coils, 3" MAF, 3" DP, custom TIP, FMIC, Kraftwerk Tune 2002 Audi Allroad 2.7T quattro manual; Kraftwerk Turbo TM4, 750cc Bosch EV14, FSI coils, stg 5 clutch, FMIC 2001 Audi Allroad 2.7T quattro manual; custom stg 1 1996 Audi A4 2.8 quattro automatic. Stock. Issues: heated seats not working (from neer model), ignition lock/key hangs, TERRIBLE gas mileage. www.regulatorfix.com www.kraftwerkturbo.com

04-25-2011, 05:29 AM	#3
vtraudt AudiWorld Senior Member Garage is empty, add now Join Date: Jan 2010 Location: Brighton, MI Posts: 886	2 logs For test purposes, I logged 2 sets of data. Which parameters can be dropped, which should I add? Is 031-1 Lambda current value of interest? Other 031? HP is calculated from torque. Airmass/per HP ditto. __________________ 1998 Passat 1.8T manual; Kraftwerk Turbo TM2, 550cc Bosch EV14, FSI coils, 3" MAF, 3" DP, high flow manifold, S4 clutch, single mass FW, FMIC, custom TIP, Kraftwerk Tune 1999 Passat 1.8T manual; Kraftwerk Turbo TM3, 550cc Bosch EV14, FSI coils, 3" MAF, 3" DP, custom TIP, FMIC, Kraftwerk Tune 2002 Audi Allroad 2.7T quattro manual; Kraftwerk Turbo TM4, 750cc Bosch EV14, FSI coils, stg 5 clutch, FMIC 2001 Audi Allroad 2.7T quattro manual; custom stg 1 1996 Audi A4 2.8 quattro automatic. Stock. Issues: heated seats not working (from neer model), ignition lock/key hangs, TERRIBLE gas mileage. www.regulatorfix.com www.kraftwerkturbo.com

10-29-2011, 10:44 PM	#4
A4Audi4Fun AudiWorld Member 2008 Audi A4 Join Date: Aug 2001 Location: Vancouver, BC, Canada Posts: 336	http://www.vaglinks.com/OBDII/Vag-co...d_Graphing.pdf See if this download helps you. __________________ (CDN - Special Edition 2008 B7 Avant 2.0T S-Line Dolphin Gray 6MTQS)

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Welcome to AudiWorld!
		Welcome to AudiWorld.com. You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join AudiWorld.com today!