Data logging with VIDA

[LeeT5]

Calling all techy ppl.....

I tried data logging with VIDA today but I'll be totally honest, I didn't really know what I was doing!
Trying to work out how to do it in VIDA took me 30 minutes.....

Once I found the options to select I decided to go for Intake air temp, Coolant temp, Ambient air temp and Boost pressure:

http://i36.photobucket.com/albums/e11/LeeT5/Phase%202%20V70R%20AWD/Random%20photos/VIDA_zpsiusocyis.jpg (http://s36.photobucket.com/user/LeeT5/media/Phase%202%20V70R%20AWD/Random%20photos/VIDA_zpsiusocyis.jpg.html)

http://i36.photobucket.com/albums/e11/LeeT5/Phase%202%20V70R%20AWD/Random%20photos/Data%20log%20file%20V70R_zpsdcyp1tn5.jpg (http://s36.photobucket.com/user/LeeT5/media/Phase%202%20V70R%20AWD/Random%20photos/Data%20log%20file%20V70R_zpsdcyp1tn5.jpg.html)

Can someone please tell me if I've done it right and also what I'm looking at please?

[Wobbly Dave]

Dream3r does a data logging packages for 150 quid. I plan to get one when I am back up and running.

[jamesy12345]

It's a graph over time of the 4 different parameters you have selected, Lee

Horizontal axis is time - could be milliseconds or seconds, & the vertical axis is magnitude of whatever it is you are measuring:

Blue line is intake air temperature
Green ambient air temp
Black boost pressure
Pink is coolant temp

temperatures in degrees C and pressure in kPa maybe? Hard to tell from pic

edit

it's in hPa...hectopascals which is the same as millibars - looks to be about 2550 / 2.55 bar absolute?

[LeeT5]

Yeah, sorry about the pictures. I saved the image as jpeg and it came out smaller than I anticipated.

Basically, the graph represents 8 minutes of mixed driving with some very hard pulls in third gear up to 5000rpm. Whilst I understand what the graph means and what I see, I don't understand whether the readings are Good, Bad or normal?

I don't know what I'm expecting to see versus what I'm getting. If you know what I mean?

[jamesy12345]

Yeah, sorry about the pictures. I saved the image as jpeg and it came out smaller than I anticipated.

Basically, the graph represents 8 minutes of mixed driving with some very hard pulls in third gear up to 5000rpm. Whilst I understand what the graph means and what I see, I don't understand whether the readings are Good, Bad or normal?

I don't know what I'm expecting to see versus what I'm getting. If you know what I mean?

I can't see anything out of the ordinary...coolant temp max is 99 degrees C, ambient temp 11.6

intake air temp is low then spikes up a little with the boost...that must be your 3rd gear pulls

Max boost quite high? 2.55 bar absolute is about 1.54 bar gauge = just over 22 psi?

[LeeT5]

I can't see anything out of the ordinary...coolant temp max is 99 degrees C, ambient temp 11.6

intake air temp is low then spikes up a little with the boost...that must be your 3rd gear pulls

Max boost quite high? 2.55 bar absolute is about 1.54 bar gauge = just over 22 psi?

:biggrin: Oh yes! pulls much better since I adjusted the waste gate.

[Ettienne]

I can read graphs well enough (studied statistics in degree) but I'm guessing you will need to use this as a baseline to compare against for improvements. Pity you didn't find this before installing new intercooler, would have been good to have put a number on improvements.

[jamesy12345]

I can read graphs well enough (studied statistics in degree) but I'm guessing you will need to use this as a baseline to compare against for improvements. Pity you didn't find this before installing new intercooler, would have been good to have put a number on improvements.

Exactly - in addition to comparing extreme values with other peeps', data logging very useful to compare the effect of mods you do to the car

Maybe you can save the data somehow, Lee, stick a date on it and revisit it later

[LeeT5]

Are those numbers I see at the top left of the graph the absolute max readings over the 8 minutes?
I think I need to do a basic VIDA course.....any takers?

[jamesy12345]

Are those numbers I see at the top left of the graph the absolute max readings over the 8 minutes? I think I need to do a basic VIDA course.....any takers?

I assumed so, Lee, although I've never used it. Far too modern for me!

[Dream3r]

The lack of recording in VIDA is a pain, plus it's limited, but fits a purpose.


The graphs are not the best either.

I can do bespoke datalogger packages for ME7 cars, any variable (rpm, maf, etc) available to the ECU I can get. (over 5000 if I remember right). I normally log around 55 when tuning my car.

http://www.ecm-tech.co.uk/product/volvo-me7-datalogger-base-package/

http://www.ecm-tech.co.uk/wp-content/uploads/2014/08/5120-v6-Boost-and-maf-1080x820.png

[Dream3r]

Just to add each one is bespoke written for the car so I need to read the car's ECU, either by post or with a DiCE unit/J2534 cable and laptop.

[Dream3r]

I can read graphs well enough (studied statistics in degree) but I'm guessing you will need to use this as a baseline to compare against for improvements. Pity you didn't find this before installing new intercooler, would have been good to have put a number on improvements.

My car (MTE tune at the time) was 60 degrees c in 4th on boost, 16c outside iirc.

Torque seems to correctly report IAT for those interested, boost no though.