Newsletter

VCDS datalogging

4. februar 2017

Driller bilen eller vil du bare gerne tjekke om alting er som det skal være ? Har du et vcds kabel og en bærbar computer ? Så har APR  lavet en rigtig fin guide til hvordan man laver en logfil med VCDS som findes her http://www.goapr.com/support/datalogging.php


Denne guide er primært lavet til APR tunede biler og de parametre som APR gerne vil tjekke, men andre kan sikkert også få glæde af den til fejlsøgning selvom bilen ikke er med APR software

 

En anden mulighed for dem der ikke ejer et vcds kabel er en APR Mobile dongle http://vagtuning.dk/apr-mobile

 


APR - VCDS Datalogging Guide

 

A. Vehicle Setup

  • Air-conditioning OFF
  • Traction control OFF
  • Windows UP
  • Note: If the car was using another octane of fuel (other than the octane to be tested) right before the testing is set to begin...Run the car until very near empty (5 miles or less until empty on trip computer to rid the fuel system of the previous octane of fuel. Then fill the car with 91 octane and drive the car for about 15 miles to rid the car of the last remnants of the previous octane. Only after this can testing begin.

 

B. RUN TYPE / DRIVING TECHNIQUE

Runs need to be at Wide-Open Throttle, 4th Gear, from 1500 rpm rolling start to redline (fuel shutoff).

Note: if too much speed in 4th gear is an issue, 3rd gear can be used but all runs need to be in the same gear at Wide-Open Throttle for the entire run between 1500 rpm and fuel shutoff.

 

C. NUMBER OF RUNS NEEDED

Minimum of 4 runs for the Vag-Com items I outlined below...one for each logging "round" as shown below in section "VAG-COM BLOCKS TO LOG".

Note: all runs should be done on the same stretch of road; the engine should be up to full operating temperature before logging; the cool down time needed between runs will be handled when the customer turns around to reposition himself for next run on the original stretch of road used for the first run.

D. VAG-COM / COMPUTER SETUP:

  • The data should be logged using Advanced Measuring Blocks in the Engine Controller
  • The "Turbo" mode should be activated to ensure a decent data sampling rate
  • The data returned to APR should be in raw numerical form (not graphs). Vag-Com will export the data in a .csv format. This is what we need. Please have them title each file like "2006_B7_K04_91_oct_4thgear-wot_run1", "2006_B7_K04_91_oct_4thgear-wot_run2" and so forth.
  • Note: If you data sample rate is low, expecially if you have no Turbo Mode option with the Micro Can cable, return to the home screen, click Options and change BLK INT to 25 and CHAR INT to 0.

 

Vag-Com Screen Shots

Main Screen

 

Engine Controller

 

Common Controllers

 

Advanced Measuring

 

E. VAG-COM BLOCKS TO LOG:

 

Turbocharged Vehicles (2.0T FSI / 2.0TFSI / 2.0 TSI)


ROUND 1 LOGGING: 

Use for Boost and Fueling Diagnosis

Item #

Vag-Com Block #

Description

1

001-1

Engine Speed

2

014-3

Misfire Sum

3

031-1

Lambda, Current Value

4

054-3

Accelerator Pedal Position

5

054-4

Throttle Plate Angle

6

101-3

Injection Timing (Median)

7*

103-1*

Current Fuel Pressure*

8

114-4

N75 Duty Cycle

9

115-3

Boost Pressure (Specified)

10

115-4

Boost Pressure (Actual)

11

230-1

Rail Pressure - Specified

12

230-2

Rail Pressure - Actual

 *Not Applicable to EA888 TSI/TFSI Engines.

 

ROUND 2 LOGGING: 

Use for Boost and Timing Diagnosis

Item #

Vag-Com Block #

Description

1

001-1

Engine Speed

2

003-4

ignition Timing

3

020-1

Cylinder Ignition Angle Delay (cyl 1)

4

020-2

Cylinder Ignition Angle Delay (cyl 2)

5

020-3

Cylinder Ignition Angle Delay (cyl 3)

6

020-4

Cylinder Ignition Angle Delay (cyl 4)

7

031-1

Lambda, Current Value

8

054-3

Accelerator Pedal Position

9

101-3

Injection Timing (Median)

10

114-3

Engine Load (actual)

11

115-4

Boost Pressure (Actual)

12

230-2

Rail Pressure - Actual

 

ROUND 3 LOGGING: 

MAF/Load-Specific Diagnosis

Item #

Vag-Com Block #

Description

 

 

 

1

001-1

Engine Speed

2

003-2

Intake Air Mass

3

031-1

Lambda, Current Value

4

054-3

Accelerator Pedal Position

5

054-4

Throttle Plate Angle

6

101-3

Injection Timing (Median)

7*

103-1*

Current Fuel Pressure*

8

114-1

Engine Load (specified)

9

114-3

Engine Load (actual)

10

115-3

Boost Pressure (Specified)

11

115-4

Boost Pressure (Actual)

12

230-2

Rail Pressure - Actual

 *Not Applicable to EA888 TSI/TFSI Engines.

 

ROUND 4 LOGGING: 

Misfire-Specific Diagnosis

Item #

Vag-Com Block #

Description

1

001-1

Engine Speed

2

003-2

Intake Air Mass

3

015-1

Misfire Cyl 1

4

015-2

Misfire Cyl 2

5

015-3

Misfire Cyl 3

6

016-1

Misfire Cyl 4

7

054-3

Accelerator Pedal Position

8

054-4

Throttle Plate Angle

9

101-3

Injection Timing (Median)

10

115-3

Boost Pressure (Specified)

11

115-4

Boost Pressure (Actual)

12

230-2

Rail Pressure - Actual

 

ROUND 5 LOGGING: 

Use for Boost and Timing

Item #

Vag-Com Block #

Description

1

003-1

Engine Speed

2

003-2

Intake Air Mass

3

003-3

Throttle Angle

3

003-4

Ignition Timing

4

020-1

Cylinder Ignition Angle Delay (cyl 1)

5

020-2

Cylinder Ignition Angle Delay (cyl 2)

6

020-3

Cylinder Ignition Angle Delay (cyl 3)

7

020-4

Cylinder Ignition Angle Delay (cyl 4)

8

031-1

Lambda, Current Value

10

114-4

N75 Duty Cycle

11

115-3

Boost Pressure (Specified)

12

115-4

Boost Pressure (Actual)

 

 

Supercharged Vehicles (3.0 TFSI)

 

General Logging Blocks: 

Use blocks from the list below as instructed

Item #

VCDS Block #

Description

Typical Stock Reported Value

Values Depend on Engine Load,

Ambient Conditions and other Variables.

Typical Stage I Reported Value

Depend on Engine Load,

Ambient Conditions and other Variables.

1

22

Throttle Position

 

 

2

24

Accelerator Position

 

 

3

33

Long Term Fuel Trim Bank 1

 

 

4

34

Long Term Fuel Trim Bank 2

 

 

5

35

Engine Speed

Redline = 7,200 RPM

Redline = 7,200 RPM

6

128

Ambient Pressure

 

 

7

292

Timing Retard Cyl 1

 

 

8

293

Timing Retard Cyl 2

 

 

9

294

Timing Retard Cyl 3

 

 

10

295

Timing Retard Cyl 4

 

 

11

296

Timing Retard Cyl 5

 

 

12

297

Timing Retard Cyl 6

 

 

13

298

Ignition Angle

 

 

14

421

Mass Air Flow

Peak = 920kg/h (Will Vary +/- 20)

Peak = 1160kg/h (Will Vary +/- 20)

15

436

Boost Pressure (absolute)

Peak = .8bar

Redline = .5bar 

Peak = .86bar

Redline = .86bar 

16

632

Intake Air Temperature

 

 

17

702

Boost Control Valve Angle

Begins to Open at 3,500 RPM

Redline = 28%.

0%

 

Naturally Aspirated Vehicles (2.5L, 3.2L)

 

ROUND 1 LOGGING: 

GENERAL

Item #

Vag-Com Block #

Description

1

001-1

Engine Speed

2

001-2

Coolant Temp

3

003-2

Intake Air Mass

4

003-4

Ignition Timing

5

011-3

Intake Air Temp

6

031-1

Lambda, Current Value

7

031-2

Lambda, Specified Value

8

054-3

Accelerator Pedal Position

9

054-4

Throttle Plate Angle

10

101-3

Injection Timing (Median)

11

114-1

Engine Load (specified)

12

114-3

Engine Load (actual)

 

ROUND 2 LOGGING: 

DETAILED TIMING

Item #

Vag-Com Block #

Description

 

1

001-1

Engine Speed

2

003-4

Ignition Timing

3

020-1

Cylinder Ignition Angle Delay (cyl 1)

4

020-2

Cylinder Ignition Angle Delay (cyl 2)

5

020-3

Cylinder Ignition Angle Delay (cyl 3)

6

020-4

Cylinder Ignition Angle Delay (cyl 4)

7

031-1

Lambda, Current Value

8

031-2

Lambda, Specified Value

9

054-3

Accelerator Pedal Position

10

112-4

Median Exhaust Temp

11

114-1

Engine Load (specified)

12

114-3

Engine Load (actual)

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