1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.
  2. Dismiss Notice

Bobby Singh A4 3.0 TDI build thread

bobby singh Jul 14, 2015

  1. tech838

    tech838 Registered User

    48
    16
    8
    Did you do this with the engine in the car? Just remove the exhaust and turbo?
     
  2. Avatar

    snack-media
    Advertisement


  3. bobby singh

    bobby singh BSR Gold Supporter VCDS Map User

    1,009
    788
    113
    Approx 140k now
    Yes engine in the car - turbo remained too just removed the downpipe and chain covers etc
     
    V6_Man likes this.
  4. bobby singh

    bobby singh BSR Gold Supporter VCDS Map User

    1,009
    788
    113
  5. youngy93

    youngy93 Registered User

    136
    24
    18
    Are you writing transmission maps with the possibility of selling the maps or purely personal use? Cheers
     
  6. bobby singh

    bobby singh BSR Gold Supporter VCDS Map User

    1,009
    788
    113
    Im writing to get quicker 1/4 mile times as box is pretty lazy as stock. If it works sure I can sell them.
    At owners risk off course :)
    There is a notable difference for sure in gear change response.
    Done plenty of S tronic boxes with good results for others.

    Cheers
     
  7. holmefield

    holmefield Registered User

    633
    79
    28
    Bobby what sort of differences are achived by remapping the S Tronic boxes?

    Mine sits in ( drive select ) Auto most of the time and sometimes shift ups strangely!! In paddles its pretty good, does a remap make Auto more responsive?

    Thanks
     
  8. RS4B5

    RS4B5 5 pots

    547
    210
    43
    Whose is faster yours or Ashley's
     
  9. bobby singh

    bobby singh BSR Gold Supporter VCDS Map User

    1,009
    788
    113
    All the stronic's I've done have had positive feedback. Most S tronic owners hate the 'lag' at the lights or engaging reverse for example.
    Sometimes sw updates can help reduce this some what. Many things can be done like increased pressure, quicker changes etc etc


    Faster to what?
    As far as I know Ash is claiming 520hp from a 2260 hybrid (AMG TW), with meth and nos?
    Apart from a dyno I'm yet to see or hear about any timed runs.

    I feel results on a different dyno like Surrey Rolling Road could highlight some differences

    Cheers
     
    DrStrange and V6_Man like this.
  10. Roadrunner146

    Roadrunner146 Registered User

    367
    82
    28
    Do you have the S stronic or Tip.
     
  11. bobby singh

    bobby singh BSR Gold Supporter VCDS Map User

    1,009
    788
    113
    I have a 6hp 28 TIP box
     
    Roadrunner146 likes this.
  12. Avatar

    snack-media
    Advertisement


  13. youngy93

    youngy93 Registered User

    136
    24
    18
    I currently have the 6hp28, seen DTUK do a tuning box for the trans which coveres DSG and Tip which im not sure on, just need faster gear changes, round town it spends too long in tc drive
     
  14. holmefield

    holmefield Registered User

    633
    79
    28
    Cheers bobby, yer mine seems to take an age to set off from the lights, amd seems a bit slow to change up sometimes
     
  15. bobby singh

    bobby singh BSR Gold Supporter VCDS Map User

    1,009
    788
    113
    September 2018

    In preparation for some drag racing action. I found some private land and done some testing :)
    Gearbox tune is working well:

    https://1drv.ms/x/s!ArL0vJlh9wPJgSwGndNwBngw_0RU

    Finally cracked sub 4s to 60mph (96km/h) ~ 3.9s
    0 to 100 is 8.3's

    I was looking at my 12.3s (best at Santa Pod 1/4 mile time logs and on that run I hit 0 to 100 in 9.79s so approx 1.5's quicker now

    Should be interesting
    Cheers
    Bobby
     
    Horia, Meemo, DrStrange and 4 others like this.
  16. Roadrunner146

    Roadrunner146 Registered User

    367
    82
    28
    Have you adjusted the rev limit as well as speeded up the shifts.
     
  17. arad85

    arad85 Registered User

    1,081
    431
    83
    Well done Bobby. Keep at it!
     
    bobby singh likes this.
  18. desertstorm

    desertstorm Moderator Staff Member Moderator VCDS Map User

    7,419
    3,713
    113
    Seriously quick Bobby well done. That's supercar quick. Well super cars from 10-15 years ago but still seriously impressive for a very stock looking diesel estate.
    http://www.autosnout.com/Cars-0-100mph-Times-List.php
    Hope you don't blow the box up by doing too much brake boosting.
     
    bobby singh likes this.
  19. bobby singh

    bobby singh BSR Gold Supporter VCDS Map User

    1,009
    788
    113
    Shift set point is still stock as in manual mode I can rev to over 5k - plenty

    Cheers Karl - I was also impressed.
    I think with some weight reduction it will do well on the strip.
    There is a 800ms dip in the torque between gear change 1 to 2 - so fixing that will improve things further.

    That link has some strange figures -
    For example
    Ford Capri RS 3100 - [1973]
    0-100 mph time - 7.9 seconds

    I grew up with old Fords and know this isn't happening :)

    Cheers
     
  20. Roadrunner146

    Roadrunner146 Registered User

    367
    82
    28
    Your right.
    1/4 mile time of 15.8 with a trap speed of 85.6. 0 to 60 comes up at 7.6.
    :thumbs up:
     
  21. DieselJake

    DieselJake Well-Known Member VCDS Map User

    3,801
    1,124
    113
    Just out of interest where do you plan on loosing weight, I always thought the beauty of what you were doing was it all still looks and acts like a regular avant.
     
  22. bobby singh

    bobby singh BSR Gold Supporter VCDS Map User

    1,009
    788
    113
    On my waist :)
    Things like less than half a tank of juice etc all helps.
    Car will be remaining a road car
     
  23. bobby singh

    bobby singh BSR Gold Supporter VCDS Map User

    1,009
    788
    113
    Horia likes this.
  24. bobby singh

    bobby singh BSR Gold Supporter VCDS Map User

    1,009
    788
    113
    October 2018

    Santa Pod trip

    Well finally made it to Santa pod yesterday. Waited for 4 hours for the track to dry out, the queue was unbelieve considering it was a non event day.
    Was hoping for more runs but someone fell off a bike :(

    [​IMG]




    Done 11.9 which I'm happy about, but I think there is more to be had, why?:

    1) 20mph head wind
    2) Car hooped (then bogged down) for some reason (maybe too much boost at take off) - see incar clip
    3) Gear change from 1 to 2 took 1.1second, Rest took ~300ms
    4) In the past my 60ft was around 1.7s but this time 1.9

    Better gearbox software will help for sure (come on xHP)

    Still pretty decent for a true daily driver I thought - drove there and back, no smoke, just diesel and air etc

    Cheers
    Bobby
     
    joe26, IRONy_MAN, Meemo and 3 others like this.
  25. desertstorm

    desertstorm Moderator Staff Member Moderator VCDS Map User

    7,419
    3,713
    113
    Sub 12 seconds for a diesel estate is great. The track still looked wet to me. I have been there in similar conditions to that in my Passat when it had been raining with a good stiff breeze blowing against you and I was well off the times I had done with a fully dry track and no wind.
    Looks to me on the launch The fronts have spun up and the power has just then gone to the rear. You need a few runs to get the best time out of the car. What tyres do you have on the car?. With a dry track and no headwind and a good start think you should be in the low 11.7 I am sure.
     
    bobby singh likes this.
  26. V6_Man

    V6_Man Moderator Staff Member Moderator VCDS Map User

    6,988
    14,082
    113
    I agree with desertstorm here Bobby, awesome numbers from a diesel estate. I am sure more runs would have given some better results


    Sent from my iPhone using Tapatalk
     
    bobby singh likes this.
  27. bobby singh

    bobby singh BSR Gold Supporter VCDS Map User

    1,009
    788
    113
    Thanks - Yes Karl I agree 11.7ish should be on the cards
    Tyres - I think they are p zero nero
    I guess the A5 wheel might be slighter heavier and the discs are for sure more weight compared with the previous S4 set up.


    Thanks - would you know what a stage 2 S4 does at santa pod? must be in the 11's too I guess

    Cheers
     
  28. V6_Man

    V6_Man Moderator Staff Member Moderator VCDS Map User

    6,988
    14,082
    113
    Not too far off tbh. I haven't been to Pod myself but happy to accompany on your next visit. Imho, your numbers are better than what I have seen people report; 11.2-12.2 for their MRC, APR, Revo stage 2s. One such example below, which is a Revo Stage 1+ (hiding their names due to GDPR )

    [​IMG]

    And from S4 Facebook page where I posted about larger TB developed by Issam Abed in US, which MRC will now start using for their DP setup.

    [​IMG]


    Sent from my iPhone using Tapatalk
     
    bobby singh likes this.
  29. macradiators

    macradiators Registered User

    63
    23
    8
    Nicely done Bobby. XHP help to improve the gearbox would be a game changer. I have seen on our bmw how well you can optimize gear change
    there is lot of room to improve the 60ft time, easily 0.2 with that nice track surface.
     
  30. bobby singh

    bobby singh BSR Gold Supporter VCDS Map User

    1,009
    788
    113
    Hi Mac - yes I'm expecting better results in the future. With Xhp you can set each gear change set point so rules out any human error for gear change etc

    Cheers
     
  31. bobby singh

    bobby singh BSR Gold Supporter VCDS Map User

    1,009
    788
    113
    Bought a Dragy gps device for measuring performance not had much of a chance to play with different RPM take off's but managed this so far:

    [​IMG]

    This is with full weight etc

    Its pretty clear the amount of torque reduction between gear changes - but still pulling just over 0.5g at 60mph.

    Here is a JD "450hp" stage 3 for comparison whats clear is that the 8hp gearbox changes are more seamless:

    [​IMG]

    Cheers
    Bobby
     
  32. JJRS

    JJRS Registered User

    2
    2
    3
    That is amazing, congratulations Bobby. I've lurked on here for ages watching various tdi builds and really impressed with what is possible. I definitely want to get mine sorted out!
     
    bobby singh likes this.
  33. Avatar

    snack-media
    Advertisement


  34. macradiators

    macradiators Registered User

    63
    23
    8
    Dragy is a good tool, i bought it also to measure. TQ reduction and delay in gear change is obvious on your graph. That gearbox needs improvement.
    Got same problem with my leon dq500 :(, loosing 0.3 0.4s /gear change.
     
  35. bobby singh

    bobby singh BSR Gold Supporter VCDS Map User

    1,009
    788
    113
    Thanks

    Yep I think 60time can be down to 3.5's with decent gearbox tuning. In gear power is unreal - the pull in the top end is like no other car I've driven and most of my driving is done on the motorway.

    Would love to see what it would do with some reduced weight.

    DSG is normally perfect and has very little TQ reduction in between changes.
    I had a RS3 (2014 model) in recently the changes were amazing on stock software.

    Cheers
     
  36. Audibot

    Audibot Registered User

    3
    1
    3
    Awesome work, Bobby! Read through the thread the other day after it was linked on Audizine. Truly impressed by what you've been able to pull off here.

    Have you considered trying to swap in a ZF 8-speed transmission? The dimensions (size-wise) and weight are very close to the ZF 6-speed, and there is tuning out there for them as well (hptuners).
     
    bobby singh likes this.
  37. bobby singh

    bobby singh BSR Gold Supporter VCDS Map User

    1,009
    788
    113
    Hi thanks - Will be plenty work to make a 8hp work. I wonder if hp tuners do 6hp tuning?
     
  38. Audibot

    Audibot Registered User

    3
    1
    3
    Definitely a lot of work. I have not seen the 6HP. The 8HP was picked up mostly because it's being used on American vehicles (Dodge, Ram) and the tuning market here picked up on it. Ya know, big muscle.
     
  39. macradiators

    macradiators Registered User

    63
    23
    8
    On my Rs3 the gear change is flawless. On the leon with dq500 is as bad as it can be. I have tried different maps, none seem to work ok. I dont know why. The best solution for you it would be the 8hp swap. Gearbox is cheap and should be plug and play. Component protection might be an issue, immo.
     
  40. bobby singh

    bobby singh BSR Gold Supporter VCDS Map User

    1,009
    788
    113
  41. youngy93

    youngy93 Registered User

    136
    24
    18



    Do you have any instructions on removing the firewall is is it straightforward? do you need to get under the car to undo bolts for the downpipe?

    Cheers
    Dan
     
  42. bobby singh

    bobby singh BSR Gold Supporter VCDS Map User

    1,009
    788
    113
    Hi Dan,

    Firewall has 3 bolts on the top and push in clip on the rhs
    Undo the wiring and cut the cable ties holding down the loom
    Undo the bar behind the firewall
    You can undo the heater hoses or spray wd40 under the rubber hoses so the slip as you are trying pull out the firewall
    I found lifting them up from left side works best

    There is one bolt for the lower flange which will require under the car action. I've had this stud break on me on a number of cars recently (just ages i guess), but you can press this out with a vice and weld in a stainless steel bolt.

    Allow approx 3 hours

    Cheers
     
  43. Devilz

    Devilz Active Member VCDS Map User

    440
    128
    43
    How is the result with 3" dpf delete as this is something I wanted to do on mine for sometime now.

    Also waiting for your write up regarding bitdi tune you were doing?

    Cheers

    Sent from my ONEPLUS A6013 using Tapatalk
     

Share This Page

Do Not Sell My Personal Information