PT Cruiser Forum  
Advertisements
       

Go Back   PT Cruiser Forum > 2.4L Turbo Forums > Turbo Performance

PT Cruiser Forum

Advertisements
Data Logger now available

 
Reply
 
LinkBack Thread Tools Display Modes
  #11 (permalink)  
Old 10 Jan 2005, 01:59 pm
Fanatic Cruiser
 
Join Date: Jan 2003
Location: San Juan, Puerto Rico, USA.
Posts: 566
Default

As Prommised, here is a chart I did from the first minute of Dalite's data:

[IMG] http://homepage.mac.com/ianrc/.Pictu...t%20minute.jpg [/IMG]

As you can see, I used five parameters in the chart. There is a glitch in the actual graph position. Because I used the 3D view, the graph is angled forward so the poins are 5# bellow actual. Use for reference the highest peak in the red line ( Engine load) that peak is 100%. RPM is at the number X100. I had to set it up like this so all the graphs would be on the same scale. Intake manifold Presure is in absolute so if is under 14.6 it is in vac. the highest recorded here is 12PSI.

There is good visual interpretation in thist chart.

1. the MPH line shows that the car was at 50 MPH at the last markers.
2. I used 13 markers at 5 sec intervals for a total of 65 seconds of recording.
2. Throttle was never fully open (as recorded). Max was 84% which at that same time Boost was at 12PSI.
3. The car accelerated from 7MPH to 50MPH in Ten secconds, as shown in markers 6-8. Note that the car wasn't being fully accelerated and in the last 5 secs the Trottle was closing. by using this I can see that the car has more potential.
4. Once the car was on a steady 50MPH cruise, you can see the engine load being lowered, Markers 10-13.

5. you can see that in marker #8, the trany shifted and the RPM had lowered.

I can be all day looking at the chart but I will leave it now to all of you to look for more stuff.

Dalite, Thanks for being the Alpha Tester on this.

Now I am off to their site to buy my own chip and test it on the track!!! In a Drag Pass It should be fun to see that chart. I am sure we will be able to see when the trany shifted, acceleration, Boost in each gear, speed and engine loads. I cant wait!!!

Once I get it, I will do a pass, download, analize, adjust and repeat!!!


Ian
__________________
Reply With Quote
  #12 (permalink)  
Old 10 Jan 2005, 02:14 pm
Fanatic Cruiser
 
Join Date: Jan 2003
Location: San Juan, Puerto Rico, USA.
Posts: 566
Default

Ok,

here is a better image of the Graph I did.
Here the points are where they should be and it is beter to use for analysis.

[IMG] http://homepage.mac.com/ianrc/.Pictu...se%20Graph.jpg [/IMG]

Ian
__________________
Reply With Quote
  #13 (permalink)  
Old 10 Jan 2005, 02:39 pm
Fanatic Cruiser
 
Join Date: Jan 2003
Location: San Juan, Puerto Rico, USA.
Posts: 566
Default

After reading the info on this chip on their site, I don't think it would work for my aplication.. The lowest it can record is in 5 sec intervals. meaning, there would be only three recorded moments of a 15 sec pass. I won't be able to see all the nuances of the engine in the details that I want.

Dalite, Can you check if that interval can be lowered?

Other than that, it is a nice thing to have around for research.

Ian
__________________
Reply With Quote
  #14 (permalink)  
Old 10 Jan 2005, 03:14 pm
Fresh Cruiser
 
Join Date: Jan 2005
Location: .
Posts: 1
Default

With the SDK, you should be able to program it to measure just about anything you want.

Quote:
quote:Originally posted by Ian-PT-GT

After reading the info on this chip on their site, I don't think it would work for my aplication.. The lowest it can record is in 5 sec intervals. meaning, there would be only three recorded moments of a 15 sec pass. I won't be able to see all the nuances of the engine in the details that I want.

Dalite, Can you check if that interval can be lowered?

Other than that, it is a nice thing to have around for research.

Ian
Reply With Quote
  #15 (permalink)  
Old 10 Jan 2005, 07:55 pm
Fanatic Cruiser
 
Join Date: Apr 2003
Location: Brunswick, Georgia, USA.
Posts: 518
Default

Quote:
quote:Originally posted by Ian-PT-GT

After reading the info on this chip on their site, I don't think it would work for my aplication.. The lowest it can record is in 5 sec intervals. meaning, there would be only three recorded moments of a 15 sec pass. I won't be able to see all the nuances of the engine in the details that I want.

Dalite, Can you check if that interval can be lowered?

Other than that, it is a nice thing to have around for research.

Ian
Ian,

5 seconds is the lowest interval that can be set by the current software. However, as pointed out in the post after yours, the SDK (software development kit) may allow the sampling interval to be lowered even more.

I have been meaning to call ther cstomer support and see what can be altered. I would like to see it be able to sample in fractions of a second, and be able to "partition" the memory to allow monitoring more than the 5 parameters.

The Carchip has the CE (chipEnable) pin active, which allows the firmware to be upgraded, as well as the parameters to be changed. In theory, there may be more that can be set externally.

I have a friend that is supposed to visit this week, and look at the
DLL files in the SDK to see if there is any indication of other possibiilties.

Like you, I have already determined 5 second intervals to be too long for my needs. I would rather have it able to make far more samples per second and record more parameters for far less time.

To be able to record 10 parameters, in tenths of a second, for 10 hours maximum would be all that I would really want.
Reply With Quote
  #16 (permalink)  
Old 10 Jan 2005, 08:46 pm
Fanatic Cruiser
 
Join Date: Jan 2003
Location: San Juan, Puerto Rico, USA.
Posts: 566
Default

Dalite.

Again you have awaken my curiosity in the misterious world of our ODBIII PCM and its parameters...

What SDK are you looking at?

I searched for one but the ones I found where huge Bulky Scientific kits.

Ian
__________________
Reply With Quote
  #17 (permalink)  
Old 11 Jan 2005, 12:43 am
Fresh Cruiser
 
Join Date: Oct 2004
Location: Texas, USA.
Posts: 17
Send a message via AIM to Hot Wheels
Default

Hey guys, check out www.autoenginuity.com for their PDA and laptop OBDII diagnostic interface/software with free performance analysis software.

I have been looking at everything out there from the G-techs to the Digimoto interface and various handheld tools. I want something that doesn't cost an arm and a leg that works at least as well as the freescan software that I use with my homemade OBDI interface on my 1994 LT1 Caprice wagon. Freescan gives me 7 RGB color gauges to monitor RPM, MAP, MPH, Spark Adv, Volts, Mass Air Temp, and Water Temp live on my laptop while driving. I can also download the live sensor data at fraction of a second intervals for later analysis.

The autoenginuity interface appears to do all of this, but at a much higher cost than the free software for the LT1! Is anyone currently using this interface or anything other than the CarChip which I looked at but also determined was too slow?
__________________
2003 PT GT Auto w/Stage 1
Reply With Quote
  #18 (permalink)  
Old 11 Jan 2005, 11:20 am
Fanatic Cruiser
 
Join Date: Apr 2003
Location: Brunswick, Georgia, USA.
Posts: 518
Default

Quote:
quote:Originally posted by Ian-PT-GT

Dalite.

Again you have awaken my curiosity in the misterious world of our ODBIII PCM and its parameters...

What SDK are you looking at?

I searched for one but the ones I found where huge Bulky Scientific kits.

Ian
You can download it for free from the Davis site:

http://www.davisnet.com/support/drive/software.asp

All the software is available at that location. The SDK is well worth looking at; especialy if you know "C" or Visual Basic.
Reply With Quote
  #19 (permalink)  
Old 11 Jan 2005, 02:09 pm
Fanatic Cruiser
 
Join Date: Apr 2003
Location: Brunswick, Georgia, USA.
Posts: 518
Default

I just got off the phone with Davis Tech Support.

I asked about smaller update intervals, memory partitioning to allow monitoring of more parameters, quickbasic programming libraries, etc.

The tech support rep was very nice and stated that there had been multiple requests for the same (or similar) features, but engineering has not paid them any attention.

So, it looks like the CarChipEX is good for monitoring average data over long term, but not useful for anything aproaching real time.

The 2 second update speed is too long in duration to capture much more than a glimpse of parameter changes during a single gear.

A GT would have to be slow to give 3 or more updates in the quarter mile.

I have a firmware update that I downloaded from their support site. It is doubtful that I could reverse assemble it to see how it addresses the memory in the EEPROM.

I have thought about sending it out the serial port to a laptop to see if I can capture the data, but am not sure that this is the way to go.
Reply With Quote
  #20 (permalink)  
Old 11 Jan 2005, 03:42 pm
Fanatic Cruiser
 
Join Date: Apr 2003
Location: Brunswick, Georgia, USA.
Posts: 518
Default

Data, showing Timing advance.

I had also selected fuel pressure, but apparently, this is one of the parameters that DCX included in the Advanced Data Set.

First Column: 5 second interval number
Second Column: Elapsed Time
Third Column: Speed (MPH)
Fourth Column: Engine Speed (RPM)
Fifth Column: Throttle Position %
Sixth Column: Timing Advance (degrees)

View / Trip Log / Trip 64 / Table

1 0:00:00 2 1,728 15.29 34.00
2 0:00:05 3 1,279 19.61 34.50
3 0:00:10 7 1,609 17.65 41.00
4 0:00:15 12 2,353 20.00 47.00
5 0:00:20 9 909 17.25 16.50
6 0:00:26 11 1,832 15.29 41.00
7 0:00:31 7 2,239 30.98 39.00
8 0:00:36 22 3,287 55.69 26.50
9 0:00:41 43 3,382 56.86 26.50
10 0:00:46 55 3,097 60.00 21.50
11 0:00:52 60 2,357 20.78 45.50
12 0:00:57 57 2,294 27.84 37.50
13 0:01:02 58 2,360 23.14 43.00
14 0:01:07 58 2,354 23.14 31.50
15 0:01:12 58 2,358 23.14 40.50
16 0:01:18 58 2,371 23.14 43.50
17 0:01:23 59 2,388 23.14 42.00
18 0:01:28 59 2,396 23.14 42.00
19 0:01:33 60 2,384 19.22 51.00
20 0:01:38 58 2,329 25.49 38.00
21 0:01:44 58 2,385 25.49 40.50
22 0:01:49 60 2,486 32.16 40.50
23 0:01:54 63 2,558 27.45 42.00
24 0:01:59 65 2,605 27.45 41.50
25 0:02:04 65 2,641 24.71 45.00
26 0:02:10 65 2,570 24.71 43.00
27 0:02:15 62 2,476 24.71 45.00
28 0:02:20 61 2,449 18.04 32.50
29 0:02:25 60 2,395 20.39 46.00
30 0:02:30 60 2,417 20.39 48.00
31 0:02:36 60 2,409 22.35 44.00
32 0:02:41 60 2,386 22.35 43.00
33 0:02:46 59 2,371 22.35 44.00
34 0:02:51 58 2,363 22.35 41.50
35 0:02:56 58 2,353 22.35 41.00
36 0:03:02 58 2,339 22.35 42.50
37 0:03:07 58 2,335 22.35 40.50
38 0:03:12 58 2,321 22.35 41.50
39 0:03:17 58 2,323 22.35 41.50
40 0:03:22 58 2,322 22.35 40.00
41 0:03:28 57 2,289 17.65 47.00
42 0:03:33 54 2,099 15.29 18.00
43 0:03:38 47 831 15.29 17.50
44 0:03:43 28 1,171 20.78 34.50
45 0:03:48 22 1,928 15.29 20.00
46 0:03:54 12 1,679 30.59 29.50
47 0:03:59 16 1,347 15.29 13.50
48 0:04:04 8 768 15.29 11.50
49 0:04:09 2 759 15.29 11.50
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
second pole for data tthrift Vendors & Buyers Forum 22 14 Sep 2004 02:10 pm
Event Data Recorder? zzzhuh General PT Cruiser Discussions 18 13 Sep 2004 03:21 pm
pole i need data for ( big brother ) tthrift Stage Turbo Kits 27 30 Aug 2004 08:03 pm
Stage I & Stage II OBD Kirby Stage Turbo Kits 3 18 Nov 2003 11:00 pm
Bad News for GT & Data Logging Programs Dalite Turbo Performance 9 31 May 2003 12:20 pm


All times are GMT -5. The time now is 08:48 am.




Powered by vBulletin® Version 3.8.2
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
LinkBacks Enabled by vBSEO 3.6.0 PL2 © 2011, Crawlability, Inc.
vB.Sponsors