Data Logs! Post them here.

[ELorinD86]

http://www.datazap.me/u/evlorin86/lo...7?log=0&data=1


3rd gear pulls and some long driving. not sure if i need to scale my maf first, or if i should just adjust the timing advance b table. Any help greatly appreciated. stock intake, stage 2 uel header 91 octane. currently using 92 octane. iams were below one after filling up at two stations i dont usually go to, but once i got to a quarter tank of gas after a long trip, they went back to one, but still some flkc present at certain speeds. worried about the knocking, but want to get the rich and lean afrs sorted out also. HELP please!

[solidONE]

Originally Posted by ELorinD86

http://www.datazap.me/u/evlorin86/lo...7?log=0&data=1


3rd gear pulls and some long driving. not sure if i need to scale my maf first, or if i should just adjust the timing advance b table. Any help greatly appreciated. stock intake, stage 2 uel header 91 octane. currently using 92 octane. iams were below one after filling up at two stations i dont usually go to, but once i got to a quarter tank of gas after a long trip, they went back to one, but still some flkc present at certain speeds. worried about the knocking, but want to get the rich and lean afrs sorted out also. HELP please!

There are guides posted on this forum that should get you started. They are actually pretty detailed and should keep you busy for a while. A lot of the stuff guys are asking has already been covered by these guys in detail. You can search for any or all the threads they've started and you will have plenty of information to digest and things to try. keep it simple and start with the MAF scale and go from there.

http://www.ft86club.com/forums/showthread.php?t=69871

http://www.ft86club.com/forums/showthread.php?t=94822

http://www.ft86club.com/forums/showthread.php?t=64790

[ELorinD86]

Thanks I've been reading all them over and over, to the point where I get overwhelmed and not sure where to start. The thing I don't quite get was reading about the vgi maf scaling tool as far as using it. Sorry I know it's probably been asked a million times.

[solidONE]

Originally Posted by ELorinD86

Thanks I've been reading all them over and over, to the point where I get overwhelmed and not sure where to start. The thing I don't quite get was reading about the vgi maf scaling tool as far as using it. Sorry I know it's probably been asked a million times.

Just focus on the MAF scaling for now and once you understand that then move to the next thing. Take some logs under both closed loop and WOT open loop operation to plug in the vgi tool. Play with that a bit, figure it out. Try to get the AFR in line with the commanded afrs logged in OL and fuel trims nice and tight (+-3~5% LTFTs or less). After you get that down then you can focus on dialing the ignition advance to reduce knock corrections.

Nobody was born knowing all this stuff. Everyone starts form somewhere. Just be glad this information is easily accessible. Make conservative changes then observe what happens. That's how you will learn. Otherwise you're better off paying someone to do it for you. You werent born knowing 2+2 = 4. Know what I mean? lol

[Tor]

Hi,
I am a bit confused about my logs. Maybe someone can help me explain.
My car is bone stock, except for drop-in K&N air filter. I run 100 RON (EU) octane fuel.

I flashed Wayno's "Stg1 98 v108.2 A01G.bin": Edited to clarify which rom
IAM = 1 all the time, minor (less than 0.65) FLKC at 0.9-1.0 load, 3700-4000 rpm during cruise. None during the pulls.
LTFT less than -5 to +0.5
MAF scaling lean, 12.6ish (ok according to Wayno).

(Here a log with two pulls:
http://datazap.me/u/tor/ww1082-stg-1...19-26-27-34-37
And here some cruising:
http://datazap.me/u/tor/ww1082-drivi...7&zoom=103-412

They are not the problem)

All good, so I though I'd try some more timing:

I flashed Wayno's "Stg1 100 v108.5.AU.Rich A01G.bin": Edited to clarify which rom
Here is a log with some pulls on the German autobahn. 3rd, 4th, 5th pull from 40 to 200 kph.
IAM = 1, two FLKC 0.65 at 6800-7000 rpm, load 1.20.
LTFT, kind of bad above 5000 rpm, almost +7
MAF scaling looks kind of off to me above 4000 rpm (big drop), becoming very rich with 10.85 above 7000 rpm?
http://datazap.me/u/tor/wayno-stg-1-...0&mark=330-442

Same log, zoomed out and only with focusing on timing:
I cruised with 140-160 kph to the next autobahn exit, to turn around and head home. Lots of FLKC. I turn around and entering the autbahn again I do a 4th gear pull from 2000 to 7200. IAM get's kicked down to 0.75 (FLKC -1.95).
http://datazap.me/u/tor/wayno-stg-1-...2-330-442-4397

Here is a log from tracking the car 2 hours earlier on Nürburgring Grand Prix circuit:
Strangely the car starts with IAM=0.985 (is it being stored from previous run?)
During the stint (short 4 laps due to an accident), IAM returns to 1. And the there is lot of FLKC, but max -0.65., as the session comes to an end -1.95 twice, but IAM stays at 1. During cool down (last 3rd of the log) there is some weird -1.4 FBKC.
http://datazap.me/u/tor/track?log=0&...=2-18-27-34-37

What do I do now?
- Why is the MAF scale off above 4000 rpm? Is the 10.85 AFR normal for AU.RICH?
- Is the knocking related to MAF/load calculations?
- Would I be better off returning to the 98AU.LEAN map?

I am tuning for track, I don't want to squeeze every hp out of the car if it subsequently doesn't work while tracking. Are there any pitfalls of running a lean map on track? Is the cat getting hotter as an example (would rather not make the engine bay hotter than it is already)?

Sorry for the long post.

[Wayno]

Why would you copy the lean map in to a rom? That scale is not for your car.

Or is what you're referring to the Stg1 scale? If it is then this is why I sent you the rich scale.

You need to keep the rich maf scale on and give it more km to adapt (at least 100km of light throttle up to 5000 rpm that's NOT highway, NOT track, NOT WOT).

After that happens your AFR will be around 11.50 with +2% LTFT.

And yes, I can see that it hasn't had enough km due to the way LTFT transitions when PI is introduced at 5000 rpm.

[Tor]

Originally Posted by Wayno

Why would you copy the lean map in to a rom? That scale is not for your car.

Or is what you're referring to the Stg1 scale? If it is then this is why I sent you the rich scale.

You need to keep the rich maf scale on and give it more km to adapt (at least 100km of light throttle up to 5000 rpm that's NOT highway, NOT track, NOT WOT).

After that happens your AFR will be around 11.50 with +2% LTFT.

And yes, I can see that it hasn't had enough km due to the way LTFT transitions when PI is introduced at 5000 rpm.

Was that an answer to my post?

I didn't copy anything between roms.

Last week I flashed: "Stg1 98 v108.2 A01G.bin". I was under the impression it was a lean map?

Yesterday I flashed "Stg1 100 v108.5.AU.Rich A01G.bin" (absolutely unchanged).

Yesterday I drove 200 km. Cruising, most moderate speed autobahn (120-130 kmh), but also some country roads. Low load, as I my rear brakes were shot (was picking up some rear brake pads from a friend).
Today I drove 120 km to Nürburgring. It was raining, moderate speed and load - mixed autobahn (low speed) and backroads (wet, very light on the throttle)

So together it's 320 km before the track-log.

Then I drove 120 km back and did the autobahn-log just before arriving home.

So together that log has almost 500 km.

[Wayno]

Originally Posted by Tor

Was that an answer to my post?

I didn't copy anything between roms.

Last week I flashed: "Stg1 98 v108.2 A01G.bin". I was under the impression it was a lean map?

Yesterday I flashed "Stg1 100 v108.5.AU.Rich A01G.bin" (absolutely unchanged).

Yesterday I drove 200 km. Cruising, most moderate speed autobahn (120-130 kmh), but also some country roads. Low load, as I my rear brakes were shot (was picking up some rear brake pads from a friend).
Today I drove 120 km to Nürburgring. It was raining, moderate speed and load - mixed autobahn (low speed) and backroads (wet, very light on the throttle)

So together it's 320 km before the track-log.

Then I drove 120 km back and did the autobahn-log just before arriving home.

So together that log has almost 500 km.

But all at low rpm which isn't enough to hit the final bracket of LTFT which is used for WOT. The distance isn't as relevant as the type of driving.

Stg1 has its own bespoke maf scale for some reason.

[Tor]

Originally Posted by Wayno

But all at low rpm which isn't enough to hit the final bracket of LTFT which is used for WOT. The distance isn't as relevant as the type of driving.

Stg1 has its own bespoke maf scale for some reason.

I logged during the first 100 km on the way to my friend. I checked the log before driving back and saw the high fuel trims. And yes I thought "doh, I've been drive it all at 3000-3500 rpm - how is it supposed to learn trims at 5000 rpm when I didn't drive it?".

So on the drive back, I made extra effort to do a lot of long/low load pulls up to 7000 rpm. I remember there was a post from Shiv somewhere that it speeds up the learning?

I did the same on the way to Nürburgring today and made extra effort to drive in as many different rpm ranges as possible.

If you say so, I will keep it as it is and drive some more with it. What do you recon with the knock? Was I better off with the 98 octane base timing B?


Strangely I only drove the 98 map for 30-50 km, and the trims all looked ok.

[Tor]

I think I'm going to flash it again, so it can start from scratch with the trims. I guess the first 100 km cruising around 3000 rpm may have messed it up?

[Wayno]

Originally Posted by Tor

I logged during the first 100 km on the way to my friend. I checked the log before driving back and saw the high fuel trims. And yes I thought "doh, I've been drive it all at 3000-3500 rpm - how is it supposed to learn trims at 5000 rpm when I didn't drive it?".

So on the drive back, I made extra effort to do a lot of long/low load pulls up to 7000 rpm. I remember there was a post from Shiv somewhere that it speeds up the learning?

I did the same on the way to Nürburgring today and made extra effort to drive in as many different rpm ranges as possible.

If you say so, I will keep it as it is and drive some more with it. What do you recon with the knock? Was I better off with the 98 octane base timing B?


Strangely I only drove the 98 map for 30-50 km, and the trims all looked ok.

It won't be in closed loop over 130 kph and it won't be in closed loop over 4800 rpm in 2nd and 4400 rpm in 3rd and above.

So do the light throttle pulls in second.

You have to be hitting between 45 and 60 g/s MAF in closed loop with some PI, it's not easy but it happens eventually.


And that Stg1 is way too lean for petrol. I said it looked fine because it looked like Stg1 does, which is lean (openflash seem to have updated it when they've had a customer car in the shop that ran rich).


LTFT should land exactly the same or even slightly leaner than the log with the Stg1 maf scale as the values in both scales between 45 and 60 g/s are practically the same.

[Wayno]

Originally Posted by Tor

I think I'm going to flash it again, so it can start from scratch with the trims. I guess the first 100 km cruising around 3000 rpm may have messed it up?

You don't have to flash again, you can disconnect the battery. If you flash again you could update the CL delay for 3rd from 4500 rpm to 4800 rpm and that might help speed up the learning.

[Tor]

Originally Posted by Wayno

You don't have to flash again, you can disconnect the battery. If you flash again you could update the CL delay for 3rd from 4500 rpm to 4800 rpm and that might help speed up the learning.

It's easier to flash than disconnect the battery. Especially since the battery side is close to a wall the way I'm parked.

I'll make the change as well.

Before I do anything else: You actually told me to flash the 102, but I thought I would be conservative so I took the 100 instead.

Should I stick with the 100, given the knock? Or is the knock a bi-product of the messed up fuel trims?

[Wayno]

Originally Posted by Tor

It's easier to flash than disconnect the battery. Especially since the battery side is close to a wall the way I'm parked.

I'll make the change as well.

Before I do anything else: You actually told me to flash the 102, but I thought I would be conservative so I took the 100 instead.

Should I stick with the 100, given the knock? Or is the knock a bi-product of the messed up fuel trims?

Yes just flash 100 again. It only has 0.35 more advance than 98.

The IAM drop is because you're beating the crap out of the car loading it up in 4th at 2000 rpm, on stock headers with a timing map that's for catless headers at that range.

Don't bother doing any logs or pulls until 100 km, and don't do any highway in that first 100 km, then do a pull in 3rd from 2500 or 3000.

And don't bother paying any attention whatsoever to the timing until the fuel is correct.