SR20DET Logging *data*

SON240sx Automotive
1

So I took the car for a spin (30-40min) drive and began logging some
numbers from start up to shut down.

I’m still reading up on what optimal/good values are but if anyone’s
curious, here’s some min/max data values.

PM if you are interested in the entire log as an Excel file (about 650KB zip)

Stock setup, 91 octane, +5C outside temp., 8psi max.


----------------------------------------------------------------
MIN. RPM                            MAX. RPM
----------------------------------------------------------------
RPM              : 812              RPM              : 5775
Air_Flow         : 1.58             Air_Flow         : 4.66
Water_Temp_C     : 77               Water_Temp_C     : 78
O2_Sensor        : 16               O2_Sensor        : 92
Speed_kph        : 6                Speed_kph        : 38
Battery          : 14               Battery          : 13.9
Throttle         : 0.46             Throttle         : 1.68
Injector         : 2.27             Injector         : 16.19
Timing           : 15               Timing           : 18
AAC              : 12               AAC              : 75
A_F_Base         : 96               A_F_Base         : 100
Duty_Cycle       : 1.54             Duty_Cycle       : 77.91


----------------------------------------------------------------
MIN. AIR FLOW                       MAX. AIR FLOW
----------------------------------------------------------------
RPM              : 2300             RPM              : 1188   
Air_Flow         : 1.45             Air_Flow         : 25.62  
Water_Temp_C     : 81               Water_Temp_C     : 83     
O2_Sensor        : 27               O2_Sensor        : 64     
Speed_kph        : 66               Speed_kph        : 0      
Battery          : 14               Battery          : 13.8   
Throttle         : 0.46             Throttle         : 1.8    
Injector         : 0.58             Injector         : 61.45  
Timing           : 1                Timing           : 15     
AAC              : 47               AAC              : 50     
A_F_Base         : 100              A_F_Base         : 79     
Duty_Cycle       : 1.11             Duty_Cycle       : 60.84  


----------------------------------------------------------------
MIN. TEMP                           MAX. TEMP
----------------------------------------------------------------
RPM              : 1038             RPM              : 4012      
Air_Flow         : 1.6              Air_Flow         : 1.91      
Water_Temp_C     : 58               Water_Temp_C     : 83        
O2_Sensor        : 81               O2_Sensor        : 2         
Speed_kph        : 0                Speed_kph        : 118       
Battery          : 14.2             Battery          : 13.9      
Throttle         : 0.46             Throttle         : 0.46      
Injector         : 2.26             Injector         : 0.58      
Timing           : 9                Timing           : 15        
AAC              : 8                AAC              : 60        
A_F_Base         : 117              A_F_Base         : 100       
Duty_Cycle       : 1.95             Duty_Cycle       : 1.94      


----------------------------------------------------------------
MIN. O2 SENSOR                      MAX. O2 SENSOR
----------------------------------------------------------------
RPM              : 1350             RPM              : 5538  
Air_Flow         : 1.58             Air_Flow         : 4.46  
Water_Temp_C     : 73               Water_Temp_C     : 81    
O2_Sensor        : 0                O2_Sensor        : 98    
Speed_kph        : 0                Speed_kph        : 114   
Battery          : 14.1             Battery          : 13.8  
Throttle         : 0.48             Throttle         : 1.02  
Injector         : 1.89             Injector         : 14.06 
Timing           : 12               Timing           : 19    
AAC              : 22               AAC              : 75    
A_F_Base         : 100              A_F_Base         : 100   
Duty_Cycle       : 2.13             Duty_Cycle       : 64.89 


----------------------------------------------------------------
MIN. SPEED                          MAX. SPEED
----------------------------------------------------------------
RPM              : 1038             RPM              : 4538 
Air_Flow         : 1.6              Air_Flow         : 2.74 
Water_Temp_C     : 58               Water_Temp_C     : 82   
O2_Sensor        : 81               O2_Sensor        : 85   
Speed_kph        : 0                Speed_kph        : 128  
Battery          : 14.2             Battery          : 13.9 
Throttle         : 0.46             Throttle         : 0.46 
Injector         : 2.26             Injector         : 3.68 
Timing           : 9                Timing           : 30   
AAC              : 8                AAC              : 75   
A_F_Base         : 117              A_F_Base         : 100  
Duty_Cycle       : 1.95             Duty_Cycle       : 13.92


----------------------------------------------------------------
MIN. THROTTLE                       MAX. THROTTLE
----------------------------------------------------------------
RPM              : 4588             RPM              : 3538
Air_Flow         : 2.39             Air_Flow         : 4.1
Water_Temp_C     : 81               Water_Temp_C     : 78 
O2_Sensor        : 73               O2_Sensor        : 89 
Speed_kph        : 100              Speed_kph        : 48 
Battery          : 14               Battery          : 14 
Throttle         : 0.44             Throttle         : 4  
Injector         : 0.58             Injector         : 14.82
Timing           : 15               Timing           : 3  
AAC              : 75               AAC              : 38 
A_F_Base         : 100              A_F_Base         : 100
Duty_Cycle       : 2.22             Duty_Cycle       : 43.69


----------------------------------------------------------------
MIN. TIMING                         MAX. TIMING
----------------------------------------------------------------
RPM              : 2225             RPM              : 1912
Air_Flow         : 1.84             Air_Flow         : 1.68
Water_Temp_C     : 60               Water_Temp_C     : 81
O2_Sensor        : 46               O2_Sensor        : 56
Speed_kph        : 0                Speed_kph        : 2
Battery          : 14.2             Battery          : 13.7
Throttle         : 0.48             Throttle         : 0.5
Injector         : 0.57             Injector         : 1.54
Timing           : 0                Timing           : 37
AAC              : 25               AAC              : 31
A_F_Base         : 100              A_F_Base         : 98
Duty_Cycle       : 1.06             Duty_Cycle       : 2.45


----------------------------------------------------------------
MIN. A/F BASE                       MAX. A/F BASE
----------------------------------------------------------------
RPM              : 2275             RPM              : 962   
Air_Flow         : 3                Air_Flow         : 1.6   
Water_Temp_C     : 80               Water_Temp_C     : 63    
O2_Sensor        : 46               O2_Sensor        : 30    
Speed_kph        : 32               Speed_kph        : 0     
Battery          : 14               Battery          : 14.2  
Throttle         : 1.38             Throttle         : 0.48  
Injector         : 6.63             Injector         : 2.41  
Timing           : 23               Timing           : 9     
AAC              : 25               AAC              : 8     
A_F_Base         : 79               A_F_Base         : 118   
Duty_Cycle       : 12.57            Duty_Cycle       : 1.93  


----------------------------------------------------------------
MIN. AAC                            MAX. AAC
----------------------------------------------------------------
RPM              : 1038             RPM              : 4650  
Air_Flow         : 1.6              Air_Flow         : 4.4   
Water_Temp_C     : 58               Water_Temp_C     : 78    
O2_Sensor        : 81               O2_Sensor        : 90    
Speed_kph        : 0                Speed_kph        : 24    
Battery          : 14.2             Battery          : 13.9  
Throttle         : 0.46             Throttle         : 2.46  
Injector         : 2.26             Injector         : 15.61 
Timing           : 9                Timing           : 13    
AAC              : 8                AAC              : 75    
A_F_Base         : 117              A_F_Base         : 100   
Duty_Cycle       : 1.95             Duty_Cycle       : 60.49 


----------------------------------------------------------------
MIN. DUTY CYCLE                     MAX. DUTY CYCLE
----------------------------------------------------------------
RPM              : 1175             RPM              : 5575 
Air_Flow         : 1.64             Air_Flow         : 4.7  
Water_Temp_C     : 80               Water_Temp_C     : 81   
O2_Sensor        : 0                O2_Sensor        : 96   
Speed_kph        : 34               Speed_kph        : 114  
Battery          : 14               Battery          : 13.9 
Throttle         : 0.48             Throttle         : 2.66 
Injector         : 0.58             Injector         : 17.14
Timing           : 0                Timing           : 17   
AAC              : 22               AAC              : 75   
A_F_Base         : 100              A_F_Base         : 100  
Duty_Cycle       : 0.57             Duty_Cycle       : 79.63
2

5775 = Max RPM ??

Yo G, no point logging if your not even going to test the car? You have no idea what it does about 6 grand and that’s generally when all goes to shi!t.

No get back out there and pound the crap out of it!

3

Gonad what are you using to log that?

4

CONSULT port and a cable I got from www.plmsdevelopments.com

I’m actually writing my own software to interface with CONSULT because
the one I’m using is weird sometimes and because I’m a nerd. :o

As for RPM, well I went to pick up my sister so I wasn’t out on some
togue runs or anything. And as I left my house I happened to drive by
two unmarked police cars. :noes: And there was traffic.

I’ll bring this to the drag meet if anyone wants to try it out (hopefully if I
show up). Or you can come by and try it on a weekend or something.

5

That’s because you live next to a police station.

6

Hey Gonad,

If you are bored at work why don’t you take that log and graph some of those numbers so that we can see relationships.

For example:

  • Graph Duty Cycle and RPM… and look for changes in LOAD
  • Graph Water Temp and Injector Duty at a set RPM and see what the ECU is doing to compensate for hot or cold water.
  • At 100% TPS, Graph RPM and Timing for the entire band and watch as the ECU takes out timing.

Just come examples off the top of my head… but seeing the graphs could spark some good chatter about factory tuned ECU’s and the relationships between different sensors and environments

7

Excel was blowing up my computer (40,000 rows) and it took me like
10min to dump it all in a SQL database.

I’ll work on graphs shortly using this data (or make another run with
some high RPM/speeds). I don’t have the data on work computer.

I just wasnt sure how I wanted to graph X/Y coordinates.

Thanks,

8

Ya I want to see some DutyCycle numbers at 13psi :smiley:

9

96.5-99%