z-ya Posted February 3, 2009 Share Posted February 3, 2009 I installed one of these in the race car last night: http://www.aempower.com/ViewCategory.aspx?CategoryID=70 I am very pleased with the results. AFR readings on the gauge and in MSII appear to correlate. The nice thing about this unit is that it uses the inexpensive Bosch sensor, has a 0-5v analog output, and includes a nice gauge! It also has a serial output for data logging, but with all the logging capabilities in MSII, there is really no need to use it. Installation is easy, just connect power, the sensor, and run the whote wire to the O2 sensor input on the MSII. Enable the EGO correction with the engine NOT RUNNING (there is a big warning about this in the Megatune manual). Same with the calibration of the AFR tables. In Megatune: - Basic Setup -> EGO Control - "Select Single Wide Band", and "Simple" under Wide Band Controller settings for now. - Tools -> Calibrate AFR Table - enter these settings (see attachment) If you want the LED bar on the bottom of the main display to read 0-5V, make these changes to you megasquirt-ii.ini file: [FrontPage] #if NARROW_BAND_EGO egoLEDs = 0.0, 1.0, 0.5 ; Voltage settings. #elif LAMBDA egoLEDs = 5.0, 0.0, 2.5 ; Lambda settings. #else egoLEDs = 19.7, 9.7, 14.7 ; Afr settings. #endif The "afr1Gauge" will match the AEM EUGO gauge. And the "egoVGauge" will correctly read 0-5V. When I get the car back on the dyno in April I will compare AFR readings in MSII with AFR as measured by the Dynpack. I'll log a few pulls after tuning is done and post the plots. Pete Quote Link to comment Share on other sites More sharing options...
z-ya Posted February 3, 2009 Author Share Posted February 3, 2009 Here is the attachment. Pete Quote Link to comment Share on other sites More sharing options...
naviathan Posted February 3, 2009 Share Posted February 3, 2009 Nice, thanks for that info! Quote Link to comment Share on other sites More sharing options...
softopz Posted February 7, 2009 Share Posted February 7, 2009 i dont know 232 doesnt seem inexpensive to me thats like the same price as a ms2 unit Quote Link to comment Share on other sites More sharing options...
dum-bass Posted February 15, 2009 Share Posted February 15, 2009 Why wouldn't you use the AEM settings in the calibration box? also, is this thing linear or non linear? Just curious. Quote Link to comment Share on other sites More sharing options...
z-ya Posted February 15, 2009 Author Share Posted February 15, 2009 i dont know 232 doesnt seem inexpensive to me thats like the same price as a ms2 unit The Innovate wideband is almost the same price, but does not include a gauge. Quote Link to comment Share on other sites More sharing options...
z-ya Posted February 15, 2009 Author Share Posted February 15, 2009 Why wouldn't you use the AEM settings in the calibration box? also, is this thing linear or non linear? Just curious. Beause I didn't know if the AEM unit I have is the same as refered to in Megatune. So to be safe, I use generic linear sensor. Yes, the output from the AEM gauge is linear. Pete Quote Link to comment Share on other sites More sharing options...
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