IS38 VCDS LOGS

[1Quick7 WP]

Would like to know if anyone on this forum have done some proper data logging with vcds on a IS38 GTi that is tuned.. APR or whatever tune you are running. With proper I mean boost, timing, fueling/afr etc

 

[dwvw]

I think I have some.

 

[dwvw]

http://datazap.me/u/dwvw/eurodyne-is38-swap?log=0&data=1-4-6-7-8-9-10-13-14-16-17

 

[Stage2Sasquatch]

http://datazap.me/u/dwvw/eurodyne-is38-swap?log=0&data=1-4-6-7-8-9-10-13-14-16-17

Was this on 93?

 

[ryansmk6]

i did some logs earlier. ED is38 93 oct file running ~e30 blend. but they are on my other computer lol.

 

[ryansmk6]

http://datazap.me/u/ryansmk7/mk7-is38-eurodyne-93-oct-file?log=0&data=1

first time using data zap so let me know if it isn't showing up properly.

 

[dwvw]

Was this on 93?

Yes, 93 with the original beta file.

 

[dwvw]

http://datazap.me/u/ryansmk7/mk7-is38-eurodyne-93-oct-file?log=0&data=1

first time using data zap so let me know if it isn't showing up properly.

When did you let off the throttle? Your boost drops real early there.

 

[1Quick7 WP]

Tanx for the logs, looks good. First time I see this DATA ZAP, works quite nice..

 

[1Quick7 WP]

http://datazap.me/u/dwvw/eurodyne-is38-swap?log=0&data=1-4-6-7-8-9-10-13-14-16-17

what is the unit of measure for the: actual charged pressure and specified charge pressure.. the are definitely not the same?

 

[ryansmk6]

When did you let off the throttle? Your boost drops real early there.

I cant remember. I was only able to do really short pulls, that's why it dropped off.

 

[VWGTI]

A little off topic, but does anyone know where I can learn to read these logs? I'm sort of new to all this data logging things and I'm not quite sure how to read these.

 

[ryansmk6]

Not sure to be honest, might just want to read up on tuning to help understand. I have a good friend that is pretty involved with tuning subarus that has helped me understand most of this stuff.

 

[0bLiViOuS]

There are so many values it's hard to write down, but maybe we should put something together on the important areas.

Specified boost = what ECU is trying to hit
Actual boost = measured boost at MAP sensor
Timing correction = degrees of correction applied. You want to stay under 3-5 I believe is the consensus. I stick to 3
IAT = Intake air yemp... Lower the better
Lambda = a/f ratio.. Not sure 100% how to read this. I believe 1.00 is equal to 14.7 (stoich) and to calculate a/f you multiple value by 14.7 (i.e. 0.9 = ~13.2)

I think these are the key values you will want to know but there are so many really. Anyone please chime in if I'm wrong on any of these values and what they represent

 

[AZGTI2]

There are so many values it's hard to write down, but maybe we should put something together on the important areas.

Specified boost = what ECU is trying to hit
Actual boost = measured boost at MAP sensor
Timing correction = degrees of correction applied. You want to stay under 3-5 I believe is the consensus. I stick to 3
IAT = Intake air yemp... Lower the better
Lambda = a/f ratio.. Not sure 100% how to read this. I believe 1.00 is equal to 14.7 (stoich) and to calculate a/f you multiple value by 14.7 (i.e. 0.9 = ~13.2)

I think these are the key values you will want to know but there are so many really. Anyone please chime in if I'm wrong on any of these values and what they represent

I have and am doing more at the request of APR.