B8 S4 log thread. Post your VCDS logs here.

[ilspazzaneve]

Since a lot of people are new to logging with VCDS, and I want to generate some quality logs for people to compare tunes, get some baselines if something is wrong, etc, I am starting this thread to post logs to. It's a given some of the tuners WONT LIKE THIS, but oh well, we are enthusiasts, and if you feel you aren't getting as good a tune as Johnny next door, or your knock sensors are disabled, or your boost/torques requests from your ECU are too low, you can check your log and compare.

Ideally, we should see an APR, REVO and GIAC log here on 93 tune so we can really know what's going on. DONT BE A PUSSY. Post your VCDS log.

Also a good time to mention, please no aggressive or politically-charged posts from vendors or members. Hopefully this thread will last and be relevant.

[ilspazzaneve]

Here's what to log, to start. Go to the ENGINE controller, then hit ADVANCED MEAS VALUES:




You'll only be able to log 8 or so blocks at a time, any more and it won't read. Note some of the block #s are different on different cars, but it'll be close, just match the descriptor instead. Don't forget to hit TURBO and GROUP UDS REQUESTS to speed up the sampling time.

Pick your blocks like below, then hit LOG, then START. Your log is a *.csv file, saved where you specified.

I'll usually do a run like this at the beginning to get the ambient conditions and check to make sure everything is OK.

Group 10 - Field 0 Outside air temperature
Group 15 - Field 0 Vehicle speed
Group 25 - Field 0 Engine speed
Group 39 - Field 0 Ambient air pressure
Group 345 - Field 0 Air mass
Group 352 - Field 0 Intake manifold pressure
Group 538 - Field 0 Cat. temperature; bank 1
Group 544 - Field 0 TI_1_HOM[0] (this is cylinder 0 injection time)
Group 556 - Field 0 Intake air temperature
Group 566 - Field 0 Throttle valve angle (don't be surprised if it only opens 80 degrees, that is normal)

Here's a knock log with all cylinders (the individual cylinders show how much timing is being pulled per cylinder due to knock)

Group 15 - Field 0 Vehicle speed
Group 25 - Field 0 Engine speed
Group 216 - Field 0 IGA_AD_1_KNK[0]
Group 217 - Field 0 IGA_AD_1_KNK[1]
Group 218 - Field 0 IGA_AD_1_KNK[2]
Group 219 - Field 0 IGA_AD_1_KNK[3]
Group 220 - Field 0 IGA_AD_1_KNK[4]
Group 221 - Field 0 IGA_AD_1_KNK[5]
Group 222 - Field 0 Ignition angle; actual
Group 623 - Field 0 Charge air pressure specified value

Here's one which I use to gauge performance

Group 15 - Field 0 Vehicle speed
Group 25 - Field 0 Engine speed
Group 216 - Field 0 IGA_AD_1_KNK[0]
Group 222 - Field 0 Ignition angle; actual
Group 233 - Field 0 Lambda probes actual; bank1
Group 345 - Field 0 Air mass
Group 352 - Field 0 Intake manifold pressure
Group 556 - Field 0 Intake air temperature
Group 623 - Field 0 Charge air pressure specified value
Group 625 - Field 0 RFP_AV

What to log:
Usually the best logs are long pulls in 3rd or 4th from a nice low RPM, say 2500 or lower, up to redline.
Some 1/4 mile logs are fun too, from a dig.
Start your log about 10 seconds before your running, at least, since you may find on a slow PC the log file starts a bit late.

The *.csv file
Try to limit your logs to the runs themselves, it's a pain in the ass to wade through 9000 rows to look for the pulls. If you have 20 mins of logs, please try to edit it such that there are a few rows before, and a few runs after the pulls, but leave the headers on the rows.

For those with DSG
For those with an S-tronic tranny, get used to not activating the kickdown switch, or else the tranny will downshift and you won't have a full pass in that gear. By "almost" flooring the accelerator pedal (you can actually feel the stiffness of the kickdown switch at this point), you'll still get full throttle, but stay in the gear you wanted. You can check this with VCDS, the throttle will open to 85%/80degrees (this is full open, don't worry).

Posting:

If you use gmail, that makes life a whole lot easier. Import your *.csv file to Google Docs as a spreadsheet. When you open the spreadsheet "file", "Publish", and copy the spreadsheet link and post it here. Easy!

[ilspazzaneve]

APR log file links

J Spazz, APR S2V2 only, 93 tune, 3 degree C/980 hPa day. Throttle valve position (absolute)/ Vehicle speed/ Engine speed/ IGA_AD_1_KNK[0]/ Ignition angle; actual/ Air mass/ Intake manifold pressure/ Intake air temperature/Charge air pressure specified value/RFP_AV/calculated Boost in PSIG

J Spazz, APR S2V2 only, 93 tune, 3 degree C/980 hPa day. Vehicle speed/ Engine speed/ IGA_AD_1_KNK[0]/ IGA_AD_1_KNK[1]/ IGA_AD_1_KNK[2]/ IGA_AD_1_KNK[3]/ IGA_AD_1_KNK[4]/ IGA_AD_1_KNK[5]/ Ignition angle; actual/ Charge air pressure specified value/ calculated boost in PSIG

[ilspazzaneve]

reserved for GIAC log file links

[ilspazzaneve]

REVO log file links
misc720, REVO 91 cali gas, Throttle valve position (absolute)/Engine speed/Ignition angle; actual/Air mass/Intake manifold pressure/RFP_AV/Boost in PSIG
misc720, REVO 91 cali gas, Exhaust temperature 1 bank 1/Engine speed/Ignition angle; actual/Lambda probes specified; bank1/Air mass/TI_1_HOM[0]/RFP_AV/AFR
misc720, REVO 91 cali gas, knock log, Engine speed/IGA_AD_1_KNK[0]/IGA_AD_1_KNK[1]/IGA_AD_1_KNK[2]/IGA_AD_1_KNK[3]/IGA_AD_1_KNK[4]/IGA_AD_1_KNK[5]

GolfGL, REVO 91 shell v-power, performance log
GolfGL, REVO 91 shell v-power, knock log
GolfGL, REVO 91 shell v-power, atm temp/pressure/throttle[

Tribe, REVO 93, ambient conditions/MAF/mani pressure

REVO 93, 1015 hPA -5 degC, MAF/boost/AFR
REVO 93, 1015 hPA -5 degC, ign/knock
REVO 93, IGN/knock/MAF/boost

[ilspazzaneve]

reserved for stock/other tuners log file links

[misc720]

Great idea for this thread.

Not sure if you want to repost the links to my Revo logs (on 91 octane), but this thread had some good info:

http://www.audizine.com/forum/showth...4005-Revo-logs

I've got 5 gallons of MS109 sitting in my garage, and now that the local drag strip is shut down, I guess some 100 file logs are the only thing left to do!

[madmadS4]

Ok when I get a chance

[ilspazzaneve]

Great idea for this thread.

Not sure if you want to repost the links to my Revo logs (on 91 octane), but this thread had some good info:

http://www.audizine.com/forum/showth...4005-Revo-logs

I've got 5 gallons of MS109 sitting in my garage, and now that the local drag strip is shut down, I guess some 100 file logs are the only thing left to do!

I added your logs, yes these were awesome and DO show knock on your gas. Any chance you remember the temp that day, or atmospheric pressure? Can be looked up I guess for location.

By all means I'd LOVE to see a REVO 100 tune, I am curious how much extra timing it runs. if you do a 3rd or 4th pull, I'd love to see logs of the blocks I posted in post #2 above - the first for atm conditions, the next for knock, and the last for performance.

[tribe]

I'm heading for the strip again. My son is coming with me so we will do some logging. If I get there with fuel low enough I might try 100. Any special logging that you want email me at: tribe3 @ gmail

[ilspazzaneve]

My interpretation of the data so far, knock sensors are very much active with REVO on the 91 tune, and the timing seems a lot more advanced than APR 93 (if it wasn't being pulled due to the knock sensors working, that is). I cannot speak to whether they have been re-calibrated, we are working on that using the resources we have here on the forum.

Welcoming any other interpretations of the data so far. I have more logs to post, but haven't gone through them yet.

[GolfGL]

My interpretation of the data so far, knock sensors are very much active with REVO on the 91 tune, and the timing seems a lot more advanced than APR 93 (if it wasn't being pulled due to the knock sensors working, that is). I cannot speak to whether they have been re-calibrated, we are working on that using the resources we have here on the forum.

Welcoming any other interpretations of the data so far. I have more logs to post, but haven't gone through them yet.

Thanks for doing this ilspazzaneve. We all appreciate your unbiased expertise (even at 4:11AM!)

[MadConan]

Good thread. I'll try to get my logging info up soon. In the meantime, I'll keep reading everyone's for comparison.

[compguy]

The best way to visualize the changes are to take logs on the same piece of road, from a complete stop, on the same day with all the different programs (stock, 91, 93, 100) using switching. Then log throttle position, RPM, airflow, boost, total timing, retard, EGT, etc and put all the different programs on top of each other on a graph in excel. Ideally the initial conditions (coolant temp, IAT) will be as matched as possible. There would need to be a way to neutralize any learning the ECU makes on program switching to make it completely applicable so some driving after the switching might be needed.

By doing this you should be able to see the difference in timing, retard, boost and EGT between the different maps. Things like throttle position and RPM could be used to align the starting points of the graphs so they all match. I know this can work, I've done it countless times when the logging SW doesn't have a nice UI that can graph.

[ilspazzaneve]

I agree it would be AWESOME to have logs like the above, actually MAF and knock is one of the key areas where logging can help you find performance. I was hoping to make it a learning experience for whoever participates, myself included, so for now let's keep our collection going.

I added Tribe's car and still have a mountain of logs from someone I'm formatting as we speak.

When I get more time, some graphs will be in order. I really want to do a timing comparison if we get enough knock-free logs, and MAF comparisons. I think it is baffling how REVO S1 can be the match of APR S2V2 at the strip on 93, when you can plainly see without plotting it on a chart that there is a LOT more airflow on S2V2, but obviously a LOT more timing on REVO - but enough to make that much more power?

Bring on those GIAC logs!

[Skidrowe]

This was my first successful log and it probably wasn't even a good or useful one, but I thought I would share anyways. I just drove down a few empty streets near my house, so I couldn't go too fast. I took first and second gear to red-line a few times in one log. I made a graph of the advance on each cylinder from a section of the log that corresponded to second gear. Below is also a graph of the rpms versus time to help you more quickly find any interesting section of data in the 3 minute log.

LOG





Let me know if there's anything specifically you want me to try to log. You can see the mods on my car in my sig.

-Skid

[xpoweruk]

I just did my first log.
Not sure I used the correct parameters

Revo stage 1+,revo intake,milltek valvesonic
3rd gear pull from 2000rpm to red line

https://www.dropbox.com/s/9y6zyz4osz...-1941.CSV?dl=0
Any useful info ??

[JeromeS13]

I just did my first log.
Not sure I used the correct parameters

Revo stage 1+,revo intake,milltek valvesonic
3rd gear pull from 2000rpm to red line
https://www.dropbox.com/home?preview...-1891-1941.CSV

Any useful info ??

Link doesn't work. Takes me to my Home in Dropbox.

[14S4GWM]

Waking up the dead with a 4 year old thread.

[xpoweruk]

https://www.dropbox.com/s/9y6zyz4osz...-1941.CSV?dl=0
That should work.

I take it that you have another thread these days.

[k6750gsxr]

little log i made this morning since temps were down a bit. 3rd gear only pull

EPL stg 2 93oct with 20% E

https://drive.google.com/open?id=0Bz...2hNR21XR2lJc3c

[jran76]

little log i made this morning since temps were down a bit. 3rd gear only pull

EPL stg 2 93oct with 20% E

https://drive.google.com/open?id=0Bz...2hNR21XR2lJc3c

What were the conditions? That's quite a bit of knock correction for 20% ethanol and topping out at 15-16 degrees of timing.

[k6750gsxr]

What were the conditions? That's quite a bit of knock correction for 20% ethanol and topping out at 15-16 degrees of timing.

Thought the same thing and mentioned it in the epl thread. Conditions were roughly 2000DA where i am and 79 degrees when pull was made.

[bhvrdr]

What were the conditions? That's quite a bit of knock correction for 20% ethanol and topping out at 15-16 degrees of timing.

Yes, I wonder if your fuel quality is really what you thought it was? Do you have a meter for it? Also if you can grab a log of afr and egt to go along with this thats helpful.

Mike

[UkuRiSh]

This was my first successful log and it probably wasn't even a good or useful one, but I thought I would share anyways. I just drove down a few empty streets near my house, so I couldn't go too fast. I took first and second gear to red-line a few times in one log. I made a graph of the advance on each cylinder from a section of the log that corresponded to second gear. Below is also a graph of the rpms versus time to help you more quickly find any interesting section of data in the 3 minute log.

LOG





Let me know if there's anything specifically you want me to try to log. You can see the mods on my car in my sig.

-Skid

what Plot soft are you using ?

[boomtime]

^that looks like free office
probably either libre or openoffice

the problem with calling it 20% ethanol is that you probably don't have an ethanol sensor so you don't really know the %
also e85 tanks at the station draw more water into your tank because ethanol mixes with water whereas 93 normally does not.
Water does not help your octane score like ethanol, keep in mind ethanol may have an octane as high as 108.

just like the octane booster names at pepboyzzzz
spray some nazzzzzzzz on that motor bro!

[ShyGuy]

I want to share my logs for my B8 S4 3.0T - 45000 KM - New Coil Packs - New Spark Plugs - New HPFP - 98 RON Gas

The car recently had the following mods installed.
CTS Turbo Supercharger Pulley and 180mm Crank Pulley.
IPE Full Exhaust (w/High Flow Cats).
Injen Intake
We did a tune with a German tuner called Simon Motorsport. Stage 2 (98RON-93 Octane Tune)

After tuning though the car didn't really feel much faster than stock. Initial low RPM acceleration is faster and snappier but when you get to mid-upper power band the power just falls off. The car seems to be puling timing at the upper end and I want to see if you guys have any insight as to whats wrong with this car.

https://www.dropbox.com/s/se138o6ed7...itial.CSV?dl=0 (ambient conditions)
https://www.dropbox.com/s/2oumhpnovo...knock.CSV?dl=0 (knock)
https://www.dropbox.com/s/pg6itb8u3p...mance.CSV?dl=0 (performance)

[14S4GWM]

^ No cooling?

Why not go with a well advertised tuner? So many good options out there.

[ShyGuy]

We use Simon Motorsport on a lot of our other cars. They are a good tuner. It's not a tune issue. Something is wrong with the car I believe but I'm trying to pin point what. My IAT seems a little high getting into 70C sometimes. I wonder if that's whats pulling timing. Does boost pressure seem right for a stage 2?

[greedy6]

My first log.. I believe I captured the correct settings for performance logging.. thoughts?
'10 6mt APR UC with CPS, etc..

https://drive.google.com/file/d/1Uyd...ew?usp=sharing

[vpls4]

I'm still really new to logging so can't comment much on that... but have you checked out datazap.me it's free. You can upload your csv file and it will graph it all out, and you can pick dif objects to graph and compare. You'll want to clean up the csv file though, probably delete the 1st five rows and delete the extraneous time stamp columns, just keep the 1st one.

Here's an example of datazap.me
https://datazap.me/u/mpls4/log-15193...3-5-6-9&solo=5

[greedy6]

Thanks. that's good..

maybe all is well since it's negative knock. i'll just pull more standard logs and keep researching.

https://datazap.me/u/greedtoad/3rd-g...8-10&zoom=4-38

https://drive.google.com/file/d/1mXB...ew?usp=sharing

[bhvrdr]

I'm still really new to logging so can't comment much on that... but have you checked out datazap.me it's free. You can upload your csv file and it will graph it all out, and you can pick dif objects to graph and compare. You'll want to clean up the csv file though, probably delete the 1st five rows and delete the extraneous time stamp columns, just keep the 1st one.

Here's an example of datazap.me
https://datazap.me/u/mpls4/log-15193...3-5-6-9&solo=5

The intake temps are maxing out if 55 Celsius which is within normal limits.

Bypass valve is staying closed so you are not bleeding off boost

Ignition angle appears to get up to maybe around 18 degrees which is fine for okay quality 93 octane.

Knock retard is pretty significant which makes me think this is a pretty aggressive file. Is this perhaps a race file?

That being said the knock retard is keeping your engine safe but just be careful and don't put any poorer quality fuel in the car than you already have or else you could always go to a slightly less aggressive program.

You could always investigate ways to reduce the knock which could be things like fuel quality improvements checking plugs and coils.

Mike

[vpls4]

Thanks for the input. I better check. I hope it's DP pump file, haven't checked since it got flashed. I'd hope they'd tell me was on DP racefile and not pump.
It's GIAC DP file. In Phoenix we can only get 91 oct so I've been mixing to E30 effective. That was my first log after going DP a couple weeks ago.

Maybe you know... I need to log some fuel stuff, WOT from a stop, my car bogs down in 1st at 2500 rpm for about a half second then pulls hard for the rest of 1st shifts at 7200 to second and so forth. After the 2500 rpm bog it pulls great. I was thinking maybe fuel getting sloshed around at start off and not getting to where it needs...but I haven't heard anyone else with that prob. Might sound crazy but if i make a right turn from a stop. I start out kind of slow then punch it and it pulls like crazy better then going straight, actually takes me by surprise a lot, thus my thinking of the fuel sloshing thing

[greedy6]

The intake temps are maxing out if 55 Celsius which is within normal limits.

Bypass valve is staying closed so you are not bleeding off boost

Ignition angle appears to get up to maybe around 18 degrees which is fine for okay quality 93 octane.

Knock retard is pretty significant which makes me think this is a pretty aggressive file. Is this perhaps a race file?

That being said the knock retard is keeping your engine safe but just be careful and don't put any poorer quality fuel in the car than you already have or else you could always go to a slightly less aggressive program.

You could always investigate ways to reduce the knock which could be things like fuel quality improvements checking plugs and coils.

Mike

Hey Mike - would you mind taking a look at my logs and tell me what you think is happening? Would be very much appreciated.

[bhvrdr]

Hey Mike - would you mind taking a look at my logs and tell me what you think is happening? Would be very much appreciated.

Yes sorry brother yours are the one I was actually commenting on.

This one

https://drive.google.com/file/d/1mXB...w?usp=drivesdk



Vlps4 I'm sorry I did not comment on your logs because in the graphing it looked like it was multiple throttle applications and multiple gears and it's just not very legible. I can try and look at the raw file to see if I can make any sense out of it.

The easiest thing to do so others can make sense out of them is to find a good solid run from 3rd gear from 2000 RPM to redline and isolate all of that data from any of the before and after part throttle driving

Sent from my SM-G935V using Tapatalk

[greedy6]

lol - I thought perhaps! Time to investigate.

would a 93 map with a blend of 93 and e85 cause something like this? maybe too much e85?

i'm putting in an ECA over the next week
i'll pull my plugs to see if there is something goofy there.

[vpls4]

Thanks, I'll have to log 3rd gear pulls. I will try to make a video of the 0-60 1st gear bog at 2500 rpm, because that is killing my times, and that's what I've been capturing int the logs. Yea that datazap isn't a good one it looks like it saved to separate logs as 1

[bhvrdr]

lol - I thought perhaps! Time to investigate.

would a 93 map with a blend of 93 and e85 cause something like this? maybe too much e85?

i'm putting in an ECA over the next week
i'll pull my plugs to see if there is something goofy there.

That wouldn't normally be the issue. If you're on a 93 octane file and your running good quality 93 octane with a nice mixture of E85 then technically you should be having no problem with knock at all and some people can even get away with running a hundred octane files with E85 mixed in.

Now that doesn't mean that your fuel quality isn't an issue. Who knows right. Either the E85 or the 93 could be some bad gas or maybe it is something in the ignition system it's certainly worth while pulling the plugs and checking them out.

You can also run logs of every single cylinder for knock retard to see if it is happening on Only One Bank or if it is happening diffusely across all cylinders. That'll help you lead you in the right direction

Thanks, I'll have to log 3rd gear pulls. I will try to make a video of the 0-60 1st gear bog at 2500 rpm, because that is killing my times, and that's what I've been capturing int the logs. Yea that datazap isn't a good one it looks like it saved to separate logs as 1

Right on brother and if you are trying to isolate an issue at a certain RPM band that's totally fine to just try and isolate that issue in the logs and give us a little bit before and a little bit after so that way we can get a better idea what we're looking at.

[greedy6]

Looks like it's an issue as I get to 6500 rpms across all cylinders.

https://datazap.me/u/greedtoad/knock...9-10&zoom=8-43