Data Logs! Post them here.

[phrosty]

Originally Posted by BigBone3

Heres my OFT Stage 2 UEL log

http://www.datazap.me/u/bigbone3/log...1?log=0&data=1

You're running a bit rich (not a terrible thing, it's safe). You may be able to extract more performance by MAF scaling.

[BigBone3]

Originally Posted by phrosty

You're running a bit rich (not a terrible thing, it's safe). You may be able to extract more performance by MAF scaling.

As far as the MAF scaling. Is there a thread you can direct me to?

[phrosty]

Originally Posted by BigBone3

As far as the MAF scaling. Is there a thread you can direct me to?

yes

[pgranberg11]

http://datazap.me/u/pgranberg11/1128...zoom=5465-6255

hey everyone! the weather is changing here in chicago so I decided to switch my fueling to 93 for easier cold startups. I'm running flex fuel right now so this run was with e25 and kraftwerks c38 standard boost pulley. Can somebody just make sure and double check everything is ok?

someone did tell me that the short term fuel trim is a little unstable and should be cleaned up a bit. and during at times of idle i do see my AFR wander all the way to 17ish.

let me know what you guys think. i appreciate any input!

Edit: there are two pulls in the chart, one towards the middle and another towards the end

[sirsol66]

Some help necessary here. Setup:

Open Flash OFT300 package
Vortech supercharger (standard pulley)
Open Flash Header
Stock catback
Vortech Maxflow BOV

Logs: http://datazap.me/u/sirsol66hotmailc...data=1-2-10-11

Car is showing very very high fuel trims (25+) at idle and low RPM areas. Car is running completely fine but the trims are not settling. No knock at WOT pulls.

Exhaust has been leak checked and no issues. I will leak check the intake side this week.

One thing I noted is that the BOV is completely open at idle and moving A LOT of air. I never ran the normal vortech bypass valve so I am not sure how the maxflow compares with it. Can this be contributing to the high fuel trims? I would think no since the MAF is quite a ways after the BOV but still curious.

[Rifle]

delete

[Kodename47]

Originally Posted by Rifle

Just had my car dyno tuned by a rep. master tuner. Put some new gas in, car felt really weird, kinda like it was knocking.

I don't know if you'll be able to tell in the logs, I'm not able to read them at all. Maybe someone can help me out.

Sprintex Twin Screw Intercooled with 69mm pulley
Stock Airbox, header back exhaust
ecutek just tuned

http://datazap.me/u/rifle/log-1449719518

That just looks like an idle log which doesn't tell us much. Looks like normal idle behaviour on a cold start.

[Rifle]

Originally Posted by Kodename47

That just looks like an idle log which doesn't tell us much. Looks like normal idle behaviour on a cold start.

Okay, so there's nothing weird there. Which tells me the injector is probably fine.. So spun rod bearing it is. Fml.

[solidONE]

Originally Posted by Kodename47

That just looks like an idle log which doesn't tell us much. Looks like normal idle behaviour on a cold start.

They all have huge amount of fuel trims at idle and low MAF. Is this typical for boosted setups, or do they need to modify the MAF scale?

[Kodename47]

Originally Posted by solidONE

They all have huge amount of fuel trims at idle and low MAF. Is this typical for boosted setups, or do they need to modify the MAF scale?

All cold idle fuel trims go all over the place it seems. It's not unusual, it's why it's best to ignore any fuel trims below 50C coolant temp.

[yo.dur]

Running fullblown's turbo kit with gt2871r at 8psi, stock injectors, 3 bar map sensor. Im getting some AFR fluctuations when cruising, possibly because of erratic maf voltage readings. Here are some logs. Wondering if everything looks normal.

Cruise Control on:
http://datazap.me/u/rasta42/ft86crui...=6-10-11-30-42

Operating temp Idle
http://datazap.me/u/rasta42/ft86idle...ata=6-10-11-30

2nd gear pull
http://datazap.me/u/rasta42/ft862ndg...ata=6-10-11-30

[solidONE]

I started to get this knock at .60~.80 loads seemingly out of nowhere. NOt sure what to make of it. I tried tightening my header to over pipe connection and it seemed to lessen for a short time. Is it just the exhaust fasteners loosening because of the large difference in the cold winter ambient temps to the high exhaust temps heating up the exhaust rapidly? Or, should I bee looking at the cam and ignition timing for a fix?

Log:http://datazap.me/u/solidone/af1z-ca...6313-3928-1628

Edit: I think it might be just a tank of bad winter blend gas. Just fueled up a fresh tank of gas and the knock seems to have lessened. Will update post with another log with this new tank of gas tomorrow.

edit2: Lower amount of flkc this morning, but still there.
http://datazap.me/u/solidone/af1z-ca...zoom=2182-2790


edit3: Logging KC and Cams with some aggressive throttle and pulls to redline: http://datazap.me/u/solidone/af1z-ca...2107-2164-2078

Probably fuel quality related. Exhaust vibration not ruled out 100%.

[makinen]

Hi,

Merry Christmas!

I've logged 3rd pull on Christmas eve .
http://datazap.me/u/makinenkr/201512...-13&zoom=3-107
98 RON petrol, HKS catted EL header, overpipe, Exedy stage 1 clutch + flywheel kit, DSS AL shaft.

I'm curious about whether I have to open loop MAF scaling or not.
The MAF curve after applying OL scaling is somewhat not smooth.
For the ignition timing, could I get more after 6800rpm by advancing some?

Based on Virtual Dyno, it hits 204hp . Just for fun.


Thanks.

[solidONE]

Originally Posted by makinen

Hi,

Merry Christmas!

I've logged 3rd pull on Christmas eve .
http://datazap.me/u/makinenkr/201512...-13&zoom=3-107
98 RON petrol, HKS catted EL header, overpipe, Exedy stage 1 clutch + flywheel kit, DSS AL shaft.

I'm curious about whether I have to open loop MAF scaling or not.
The MAF curve after applying OL scaling is somewhat not smooth.
For the ignition timing, could I get more after 6800rpm by advancing some?

Based on Virtual Dyno, it hits 204hp . Just for fun.


Thanks.

Looks pretty damn good. MafV goes as high as 4.13v which is as much as I've seen with my catless headers/stock airbox setup in cold weather. AFR look good except where LTFT was subtracting fuel at the lower range. Not too bad though. With a log looking like this I would not hesitate adding .5 or a degree of timing in the entire range. I'm sure there is a little more power on the table.

But that pull doesn't look like a good candidate to convert to dynograph with a lot of little dips and spikes in the rpm. I like to use 2 smoothing on virtual dyno.
http://datazap.me/u/makinenkr/201512...66-92-97-86-73

I would suggest doing many back to back pulls on a nice and flat/level surface to get good/consistent data for conversion. At least 3-4 pulls. I do about 10 in a row then a 3to4to5 gear at the end for good measure and good data to see if you can add or pull some timing for better power or knock resistance