Monster MotorsportBadger5
Page 1 of 4 1234 LastLast
Results 1 to 40 of 143
  1. #1
    Westy's Avatar
    Double Dark Side! Diesel & 8P

    Status
    Offline
    Join Date
    Dec 2008
    Location
    Cambridgeshire sometimes Hertfordshire
    Posts
    17,283

    VCDS logging suggestions on what to log.

    I'm planning on doing some logging this Saturday morning (if I can drag my lazy arse out of bed!) to try and diagnose a possible boost leak/failing MAF. When I get my toe down I can hear the turbo and it sounds like normal but the car seems to have lost the kick it had before.

    I plan to log the following blocks and wondered if anyone had any others to add to the list:

    - Block 1
    - Block 2 = MAF
    - Block 20
    - Block 31
    - Block 115 = Boost
    - Block 118 = N75 Cycle

    All of the above should give me an idea of boost, MAF, Fueling, rough power figure etc.

    If anyone has any other suggestions please post here.
    8P A3 TDI - 220bhp - 335lbft
    A3 Maintenance Thread
    Bye bye S3 you will be missed.
    S3 Build Thread







  2. # ADS
    ADS
    Join Date
    Always
    Location
    Global
    Posts
    Many
     
  3. #2
    s3dave's Avatar
    TFSI Hybrid

    Status
    Offline
    Join Date
    Nov 2009
    Location
    west yorks
    Posts
    10,121

  4. #3
    Westy's Avatar
    Double Dark Side! Diesel & 8P

    Status
    Offline
    Join Date
    Dec 2008
    Location
    Cambridgeshire sometimes Hertfordshire
    Posts
    17,283
    Thanks for that link Dave but I was more after peoples experiences of logging to diagnose power issues. I'm kind of hoping my MAF readings are low and by unplugging the MAF will confirm its the MAF. It's an easy fix then.
    8P A3 TDI - 220bhp - 335lbft
    A3 Maintenance Thread
    Bye bye S3 you will be missed.
    S3 Build Thread







  5. #4
    J B
    J B's Avatar
    1st Gear

    Status
    Offline
    Join Date
    Dec 2008
    Location
    Hants & Ox
    Posts
    140
    I am very much in the same boat, think my MAF has given up the ghost but was wondering how to confirm it with VCDS!?

  6. #5
    RIP S3dave

    Status
    Online
    Join Date
    May 2004
    Location
    nr Glos
    Posts
    7,190
    std 210/225 should read 180g/s and remapped 200-210g/s approx

    substantially less and its goosed
    also check (not log) block 032 and see what fuel trims are at (before erasing any faultcodes, as that also resets adaptions on 032)
    **http://www.facebook.com/Badger5Ltd**

    NEW NEW NEW eShop now LIVE>
    www.badger5.biz

    Badger 5 Ltd, Queen Annes Gate, Oldends Lane, Stonehouse, Glos, GL10 2DG


    http://www.badger5.co.uk, Tel:01453822880
    bill@badger5.co.uk
    **NEW** Badger5 Section CLICK here>> http://www.audi-sport.net/vb/213-badger-5/

  7. #6
    Westy's Avatar
    Double Dark Side! Diesel & 8P

    Status
    Offline
    Join Date
    Dec 2008
    Location
    Cambridgeshire sometimes Hertfordshire
    Posts
    17,283
    Thanks Bill. How long do MAFs tend to last on a remapped car in your experience? My MAF is nearly 3 years old!
    8P A3 TDI - 220bhp - 335lbft
    A3 Maintenance Thread
    Bye bye S3 you will be missed.
    S3 Build Thread







  8. #7
    J B
    J B's Avatar
    1st Gear

    Status
    Offline
    Join Date
    Dec 2008
    Location
    Hants & Ox
    Posts
    140
    Im not aware that my MAF has ever been changed lol! I had a peak of 138g/s this afternoon and thats after fitting Bills 3" TIP & a big old JR cone! think I will be giving audi a call then

  9. #8
    Westy's Avatar
    Double Dark Side! Diesel & 8P

    Status
    Offline
    Join Date
    Dec 2008
    Location
    Cambridgeshire sometimes Hertfordshire
    Posts
    17,283
    JB have you got an S3, it looks like it from your pic? If you unplug the MAF and re-do your logging your car should use the default values of the ECU instead of the MAF reading (as its unplugged). If you've got a more powerful car, you know your MAF is fecked.

    This is a cool spreadsheet to use to get a rough power graph: http://www.ross-tech.net/vag-com/exa...0_Tutorial.xls
    8P A3 TDI - 220bhp - 335lbft
    A3 Maintenance Thread
    Bye bye S3 you will be missed.
    S3 Build Thread







  10. #9
    J B
    J B's Avatar
    1st Gear

    Status
    Offline
    Join Date
    Dec 2008
    Location
    Hants & Ox
    Posts
    140
    Yeah its an AMK, I might give this a go in a minute then I have just ordered a MAF from audi anyway hopefully this will just confirm! Is there anything I should log whilst doing this?

  11. #10
    RIP S3dave

    Status
    Online
    Join Date
    May 2004
    Location
    nr Glos
    Posts
    7,190
    remembering back to the RR day we did... there was an S3 on that day which had barely over 100g/s from his MAF - it happens.. quite often
    **http://www.facebook.com/Badger5Ltd**

    NEW NEW NEW eShop now LIVE>
    www.badger5.biz

    Badger 5 Ltd, Queen Annes Gate, Oldends Lane, Stonehouse, Glos, GL10 2DG


    http://www.badger5.co.uk, Tel:01453822880
    bill@badger5.co.uk
    **NEW** Badger5 Section CLICK here>> http://www.audi-sport.net/vb/213-badger-5/

  12. #11
    Westy's Avatar
    Double Dark Side! Diesel & 8P

    Status
    Offline
    Join Date
    Dec 2008
    Location
    Cambridgeshire sometimes Hertfordshire
    Posts
    17,283
    I might unplug my MAF for the drive home to see if it feels any different!
    8P A3 TDI - 220bhp - 335lbft
    A3 Maintenance Thread
    Bye bye S3 you will be missed.
    S3 Build Thread







  13. #12
    Westy's Avatar
    Double Dark Side! Diesel & 8P

    Status
    Offline
    Join Date
    Dec 2008
    Location
    Cambridgeshire sometimes Hertfordshire
    Posts
    17,283
    Just logged my boost, MAF, and power on my way to get my exhaust fixed. Anyway I had a quick peek at the maf reading while logging and the max I saw was 188 on a stage 1 S3!!!! That might explain my lack of power. I'll have to check the boost readings when I'm home to see if there's a leak but somethings not right!
    8P A3 TDI - 220bhp - 335lbft
    A3 Maintenance Thread
    Bye bye S3 you will be missed.
    S3 Build Thread







  14. #13
    Westy's Avatar
    Double Dark Side! Diesel & 8P

    Status
    Offline
    Join Date
    Dec 2008
    Location
    Cambridgeshire sometimes Hertfordshire
    Posts
    17,283
    Went to Audi and got a new MAF which has made the car feel so smooth but something is still wrong as I'm getting the same reading on the new MAF! Heres the results of Blocks 2 (MAF), 115 (Boost), 120 (Power):

    Old MAF:

    MAF = 188g/s
    BHP = 244
    TRQ = 270lbft
    BOOST = 22PSI

    Unplugged MAF:

    MAF = N/A
    BHP = 245
    TRQ = 260lbft
    BOOST = 22PSI

    New MAF:

    MAF = 187g/s
    BHP = 229
    TRQ = 268lbft
    BOOST = 22PSI

    HELP! WTF is going on? If the MAF readings are that low with a new sensor and on a car that is holding 22PSI what else could the problem be??

    Any help appreciated.
    8P A3 TDI - 220bhp - 335lbft
    A3 Maintenance Thread
    Bye bye S3 you will be missed.
    S3 Build Thread







  15. #14
    Westy's Avatar
    Double Dark Side! Diesel & 8P

    Status
    Offline
    Join Date
    Dec 2008
    Location
    Cambridgeshire sometimes Hertfordshire
    Posts
    17,283
    Just noticed that this error is reocurring:

    17963/P1555 - Boost Pressure Control: Upper Limit Exceeded

    Possible Symptoms

    • Reduced power output
    • Limp mode
    Possible Causes

    • Boost Pressure too High
    • Hoses/Pipes incorrect connected, disconnected, blocked or leaking
    • Charger Pressure Control defective
      • VNT (variable nozzle turbo): nozzles stuck
    • Solenoid Valve for Boost Pressure Control (N75) defective
    Possible Solutions

    • Check Hoses/Pipes to/between Components
    • Check Solenoid Valve for Boost Pressure Control (N75)
    • Check / Clean / Replace Charge Pressure Control
      • Check / Clean mechanism for variable nozzles
    I think i'll go away and log the N75 cycle and see if thats the culprit.
    8P A3 TDI - 220bhp - 335lbft
    A3 Maintenance Thread
    Bye bye S3 you will be missed.
    S3 Build Thread







  16. #15
    Westy's Avatar
    Double Dark Side! Diesel & 8P

    Status
    Offline
    Join Date
    Dec 2008
    Location
    Cambridgeshire sometimes Hertfordshire
    Posts
    17,283
    Right i'm going to log the N75 duty cycle this evening and just want to make sure i'm on the right track.

    From my understanding I should be logging block 118 along side 115 to show the boost as well as the N75. The N75 should hit around 96% to show spool up then wind back while it achieves its requested boost. Anyone else done N75 logging before?
    8P A3 TDI - 220bhp - 335lbft
    A3 Maintenance Thread
    Bye bye S3 you will be missed.
    S3 Build Thread







  17. #16
    s3dave's Avatar
    TFSI Hybrid

    Status
    Offline
    Join Date
    Nov 2009
    Location
    west yorks
    Posts
    10,121
    I dont think they go past 95% as a safety measure...irc

  18. #17
    Westy's Avatar
    Double Dark Side! Diesel & 8P

    Status
    Offline
    Join Date
    Dec 2008
    Location
    Cambridgeshire sometimes Hertfordshire
    Posts
    17,283
    Ok I logged the N75 and it seems fine as it's peaking at 94.5%

    Soooooo, what could my problem be? What else would cause low MAF readings if the MAF is brand new? Small boost leak possibly?
    8P A3 TDI - 220bhp - 335lbft
    A3 Maintenance Thread
    Bye bye S3 you will be missed.
    S3 Build Thread







  19. #18
    finesse's Avatar
    6th Gear

    Status
    Offline
    Join Date
    Aug 2006
    Location
    London / Anglia
    Posts
    2,814
    1 . 002 115 119

    2. 032 (both values, when idling)

  20. #19
    Westy's Avatar
    Double Dark Side! Diesel & 8P

    Status
    Offline
    Join Date
    Dec 2008
    Location
    Cambridgeshire sometimes Hertfordshire
    Posts
    17,283
    What's block 119? I have a file of 002, 115, & 118 to show MAF, Boost & N75

    What does block 032 show?
    8P A3 TDI - 220bhp - 335lbft
    A3 Maintenance Thread
    Bye bye S3 you will be missed.
    S3 Build Thread







  21. #20
    Westy's Avatar
    Double Dark Side! Diesel & 8P

    Status
    Offline
    Join Date
    Dec 2008
    Location
    Cambridgeshire sometimes Hertfordshire
    Posts
    17,283
    Also does anyone know what the "charge pressure control" is?

    The code above says to try the following:

    Possible Solutions

    - Check / Clean / Replace Charge Pressure Control
    8P A3 TDI - 220bhp - 335lbft
    A3 Maintenance Thread
    Bye bye S3 you will be missed.
    S3 Build Thread







  22. #21
    finesse's Avatar
    6th Gear

    Status
    Offline
    Join Date
    Aug 2006
    Location
    London / Anglia
    Posts
    2,814
    Quote Originally Posted by Westle View Post
    What's block 119? I have a file of 002, 115, & 118 to show MAF, Boost & N75

    What does block 032 show?
    032 adaptations made because of vac leaks etc



    Boost pressure control

    Duty cycle boost pressure control valve vs Boost pressure before throttle valve

  23. #22
    finesse's Avatar
    6th Gear

    Status
    Offline
    Join Date
    Aug 2006
    Location
    London / Anglia
    Posts
    2,814

  24. #23
    Westy's Avatar
    Double Dark Side! Diesel & 8P

    Status
    Offline
    Join Date
    Dec 2008
    Location
    Cambridgeshire sometimes Hertfordshire
    Posts
    17,283
    Thanks Finese but still doesn't explain what or where the charge pressure control is to clean or change it.

    I'll log 032 tomorrow and see whats occuring. Cheers
    8P A3 TDI - 220bhp - 335lbft
    A3 Maintenance Thread
    Bye bye S3 you will be missed.
    S3 Build Thread







  25. #24
    Sandip's Avatar
    6th Gear

    Status
    Offline
    Join Date
    Nov 2006
    Location
    Greater Manchester
    Posts
    2,379
    Your maf reading are very similar to what i got a few months back, what map are you running?

    I had loads of leaks when i got 188g/s. Most of my pcv hoses were split plus my cylinder head was cracked
    3.2 V6 with Custom Code VVT Attack Software


  26. #25
    Westy's Avatar
    Double Dark Side! Diesel & 8P

    Status
    Offline
    Join Date
    Dec 2008
    Location
    Cambridgeshire sometimes Hertfordshire
    Posts
    17,283
    Quote Originally Posted by sandip View Post
    Your maf reading are very similar to what i got a few months back, what map are you running?

    I had loads of leaks when i got 188g/s. Most of my pcv hoses were split plus my cylinder head was cracked
    That's not what I want to hear! My PCV system was changed in the summer when I fitted my catch can, maybe there is a leak in my new system? I'm running a ChippedUK map from "Chip n spin".

    I logged block 32 as suggested above but not sure if it's the right block as it's showing Lambda 1.3% & -0.8%
    8P A3 TDI - 220bhp - 335lbft
    A3 Maintenance Thread
    Bye bye S3 you will be missed.
    S3 Build Thread







  27. #26
    finesse's Avatar
    6th Gear

    Status
    Offline
    Join Date
    Aug 2006
    Location
    London / Anglia
    Posts
    2,814
    results are fine


    Quote Originally Posted by Welly View Post
    Easiest way is to check block 032.

    There are two fields in the block, and both belong to fuel trims.

    Left hand one is short term adaption, right hand one is long term adaption. Left hand one is the one to look at in this instance.

    Make a note of these two figures. Reset the fault codes (even if there are none), as this will clear the fuel trim data back to 0% for both blocks.

    Then start the motor and log block 032. If the value in the left hand block steadily climbs to or past the 3-4% area, it's normally a good indication of a leak.

  28. #27
    s3dave's Avatar
    TFSI Hybrid

    Status
    Offline
    Join Date
    Nov 2009
    Location
    west yorks
    Posts
    10,121
    Charge pressure control would be the actuator....

  29. #28
    Westy's Avatar
    Double Dark Side! Diesel & 8P

    Status
    Offline
    Join Date
    Dec 2008
    Location
    Cambridgeshire sometimes Hertfordshire
    Posts
    17,283
    Ahhh nice one cheers. So the above is an indeication of leaks within the FRP if it is measuring fuel trim?

    So it looks like my next port of call will be PCV and boost hoses.
    8P A3 TDI - 220bhp - 335lbft
    A3 Maintenance Thread
    Bye bye S3 you will be missed.
    S3 Build Thread







  30. #29
    Westy's Avatar
    Double Dark Side! Diesel & 8P

    Status
    Offline
    Join Date
    Dec 2008
    Location
    Cambridgeshire sometimes Hertfordshire
    Posts
    17,283
    Quote Originally Posted by s3dave View Post
    Charge pressure control would be the actuator....
    Any way of using VCDS to log what the actuator is doing? I'll try to post up my boost graph in a minute.
    8P A3 TDI - 220bhp - 335lbft
    A3 Maintenance Thread
    Bye bye S3 you will be missed.
    S3 Build Thread







  31. #30
    RIP S3dave

    Status
    Online
    Join Date
    May 2004
    Location
    nr Glos
    Posts
    7,190
    Quote Originally Posted by finesse View Post
    032 adaptations made because of vac leaks etc
    and other scenarios like maf under reading, and lambda correcting afr
    **http://www.facebook.com/Badger5Ltd**

    NEW NEW NEW eShop now LIVE>
    www.badger5.biz

    Badger 5 Ltd, Queen Annes Gate, Oldends Lane, Stonehouse, Glos, GL10 2DG


    http://www.badger5.co.uk, Tel:01453822880
    bill@badger5.co.uk
    **NEW** Badger5 Section CLICK here>> http://www.audi-sport.net/vb/213-badger-5/

  32. #31
    s3dave's Avatar
    TFSI Hybrid

    Status
    Offline
    Join Date
    Nov 2009
    Location
    west yorks
    Posts
    10,121
    could try the hose from n75 to actuator, sometimes are loose on the actuator

  33. #32
    Westy's Avatar
    Double Dark Side! Diesel & 8P

    Status
    Offline
    Join Date
    Dec 2008
    Location
    Cambridgeshire sometimes Hertfordshire
    Posts
    17,283
    Quote Originally Posted by badger5 View Post
    and other scenarios like maf under reading, and lambda correcting afr
    Bill, If my boost readings seem fine, and so do my Lambda but my MAF (brand new) readings are low where would you start hunting for problems?
    8P A3 TDI - 220bhp - 335lbft
    A3 Maintenance Thread
    Bye bye S3 you will be missed.
    S3 Build Thread







  34. #33
    Westy's Avatar
    Double Dark Side! Diesel & 8P

    Status
    Offline
    Join Date
    Dec 2008
    Location
    Cambridgeshire sometimes Hertfordshire
    Posts
    17,283
    Ok here's my graph showing boost on the old MAF and the new MAF. The lines will be slightly different anyway as the runs were logged on 2 different stretches of road. As you can see the boost seems to tail off pretty quickly, could this be a tired actuator??

    8P A3 TDI - 220bhp - 335lbft
    A3 Maintenance Thread
    Bye bye S3 you will be missed.
    S3 Build Thread







  35. #34
    S3KO4's Avatar
    4th Gear

    Status
    Offline
    Join Date
    Aug 2009
    Location
    London
    Posts
    850
    I have logged the the above mentioned blocks:

    I have got the following:

    gs= 202
    BHP = 202/0.8 = 252
    torque= 325nm out of a possible of 435!
    psi= 23.3

    why is the torque down so much. I would have thought it would be near the 400 mark! and the bhp is down by 10

    test was done using 3rd gear with shell v-power, both oil and coolant temp were both 90C
    S3-8L REVO stage 2, Milltek, 3" DP & custom 3" decat, RS2 spark plugs, 4 bar FPR, Green-Cotton uprated upper/lower boost hose & TIP, Front Zimmerman & Ferrodo. LCR spliter. boost gauge, smoothed AB. Aero blades, H&R 5mm spacers. Best time 14.03sec, 0-62 in 5.7sec. 207gs @ 25psi , polished inlet mani. VAGCOM 805.1

  36. #35
    s3dave's Avatar
    TFSI Hybrid

    Status
    Offline
    Join Date
    Nov 2009
    Location
    west yorks
    Posts
    10,121
    I would think the torque is enough.....maybe slightly down on the g/S readings...

  37. #36
    Westy's Avatar
    Double Dark Side! Diesel & 8P

    Status
    Offline
    Join Date
    Dec 2008
    Location
    Cambridgeshire sometimes Hertfordshire
    Posts
    17,283
    Quote Originally Posted by S3KO4 View Post
    I have logged the the above mentioned blocks:

    I have got the following:

    gs= 202
    BHP = 202/0.8 = 252
    torque= 325nm out of a possible of 435!
    psi= 23.3

    why is the torque down so much. I would have thought it would be near the 400 mark! and the bhp is down by 10

    test was done using 3rd gear with shell v-power, both oil and coolant temp were both 90C
    Put your torque figures into this spreadsheet to get lbft:

    http://www.ross-tech.net/vag-com/exa...0_Tutorial.xls

    You've got to remember that the readings are all from sensors and not a true representation of your actual Torque if you were to get on a RR.
    8P A3 TDI - 220bhp - 335lbft
    A3 Maintenance Thread
    Bye bye S3 you will be missed.
    S3 Build Thread







  38. #37
    s3dave's Avatar
    TFSI Hybrid

    Status
    Offline
    Join Date
    Nov 2009
    Location
    west yorks
    Posts
    10,121
    Quote Originally Posted by Westle View Post
    Put your torque figures into this spreadsheet to get lbft:

    http://www.ross-tech.net/vag-com/exa...0_Tutorial.xls

    You've got to remember that the readings are all from sensors and not a true representation of your actual Torque if you were to get on a RR.
    Unfortunately a lot of RR arnt true representations either....lol

  39. #38
    Westy's Avatar
    Double Dark Side! Diesel & 8P

    Status
    Offline
    Join Date
    Dec 2008
    Location
    Cambridgeshire sometimes Hertfordshire
    Posts
    17,283
    Quote Originally Posted by s3dave View Post
    Unfortunately a lot of RR arnt true representations either....lol
    haha very true.
    8P A3 TDI - 220bhp - 335lbft
    A3 Maintenance Thread
    Bye bye S3 you will be missed.
    S3 Build Thread







  40. #39
    S3KO4's Avatar
    4th Gear

    Status
    Offline
    Join Date
    Aug 2009
    Location
    London
    Posts
    850
    There is only one way to find out. a side by side drag race..
    S3-8L REVO stage 2, Milltek, 3" DP & custom 3" decat, RS2 spark plugs, 4 bar FPR, Green-Cotton uprated upper/lower boost hose & TIP, Front Zimmerman & Ferrodo. LCR spliter. boost gauge, smoothed AB. Aero blades, H&R 5mm spacers. Best time 14.03sec, 0-62 in 5.7sec. 207gs @ 25psi , polished inlet mani. VAGCOM 805.1

  41. #40
    S3KO4's Avatar
    4th Gear

    Status
    Offline
    Join Date
    Aug 2009
    Location
    London
    Posts
    850
    Last edited by S3KO4; 8th February 2011 at 14:42.
    S3-8L REVO stage 2, Milltek, 3" DP & custom 3" decat, RS2 spark plugs, 4 bar FPR, Green-Cotton uprated upper/lower boost hose & TIP, Front Zimmerman & Ferrodo. LCR spliter. boost gauge, smoothed AB. Aero blades, H&R 5mm spacers. Best time 14.03sec, 0-62 in 5.7sec. 207gs @ 25psi , polished inlet mani. VAGCOM 805.1

 

 
Page 1 of 4 1234 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Single Sign On provided by vBSSO

Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

Content Relevant URLs by vBSEO