Member Contributer kaldek Posted June 4, 2012 Member Contributer Share Posted June 4, 2012 Hi folks, HealTech electronics have released their OBD tool for the Honda EFI (ECU) unit as fitted to 2006 and newer VFRs (also any Honda bike with the 4-pin DLC connector). I've ordered one from them and will make a video on its capabilities when it arrives, but you can download the software program now, and load some sample recordings It's great - exactly what I was looking for. It tracks in realtime (and records) the following data: Engine speed Vehicle speed Intake air temperature Engine coolant temperature Manifold Pressure Throttle Position Battery Voltage Injector pulse width O2 sensor voltages O2 sensor heating element state Short term fuel trim values for each cylinder bank (finally we know the bike only has a Short-term trim!!) Bank angle sensor PAIR valve solenoid state Flapper valve solenoid state EVAP solenoid state Side stand switch state Engine stop switch state Fan switch state Bank angle sensor state VTEC valve solenoid state Starter switch state Gear position switch state FI lamp state It also shows you live ECU OBD errors in the software, some of which I'm hoping are the ones that don'tt cause the FI light to flash. This will aid problem diagnosis greatly. Link to comment Share on other sites More sharing options...
Member Contributer kaldek Posted June 14, 2012 Author Member Contributer Share Posted June 14, 2012 The OBD tool arrived today. Nice piece of kit! Now I just need to plan out some tests I want to run, which include: When the airbox flapper opens When the PAIR valve closes If the PAIR valve activation is linked to the O2 sensors. Link to comment Share on other sites More sharing options...
V4 Rosso Posted June 14, 2012 Share Posted June 14, 2012 Nice. If you're looking for aditional ideas to play arond with your new tool: The effect of O2 sensor eliminators on injector pulse width. The effect of using a higher pressure FPR on injector pulse width. Link to comment Share on other sites More sharing options...
Member Contributer kaldek Posted June 14, 2012 Author Member Contributer Share Posted June 14, 2012 The effect of using a higher pressure FPR on injector pulse width. Wouldn't do anything to the pulse width, the pulse time would be the same it would just deliver more fuel due to the higher pressure. Link to comment Share on other sites More sharing options...
Auspanglish Posted June 14, 2012 Share Posted June 14, 2012 No photos = No gizmos. You are now the VFRD Official Geekmaster!! Is this OBDwankenobi thingy akin to the diagnostic tool they would use at Honda mechanical workshops/dealers? Link to comment Share on other sites More sharing options...
Member Contributer kaldek Posted June 14, 2012 Author Member Contributer Share Posted June 14, 2012 So far I only have this pic. Will post a video soon too! Link to comment Share on other sites More sharing options...
Member Contributer kaldek Posted June 14, 2012 Author Member Contributer Share Posted June 14, 2012 Is this OBDwankenobi thingy akin to the diagnostic tool they would use at Honda mechanical workshops/dealers? Yeah pretty much, but like 1% of the price (or less). Link to comment Share on other sites More sharing options...
Auspanglish Posted June 14, 2012 Share Posted June 14, 2012 Short term fuel trim values for each cylinder bank (finally we know the bike only has a Short-term trim!!) Kal, wondering what this trim business is???? Link to comment Share on other sites More sharing options...
V4 Rosso Posted June 14, 2012 Share Posted June 14, 2012 Wouldn't do anything to the pulse width, the pulse time would be the same it would just deliver more fuel due to the higher pressure. I would expect a closed loop system to trim down the pulse length. Link to comment Share on other sites More sharing options...
Member Contributer kaldek Posted June 15, 2012 Author Member Contributer Share Posted June 15, 2012 Wouldn't do anything to the pulse width, the pulse time would be the same it would just deliver more fuel due to the higher pressure. I would expect a closed loop system to trim down the pulse length. That's assuming it's truly closed loop. There is no Long Term Fuel Trim (LTFT), only Short Term Fuel Trim (STFT) which only kicks in at certain situations. Finding exactly when those are is one of my main tests to perform, so I should know in a couple of weeks. Link to comment Share on other sites More sharing options...
Member Contributer ermisVFR Posted July 3, 2012 Member Contributer Share Posted July 3, 2012 ..........so I should know in a couple of weeks. Any news? Link to comment Share on other sites More sharing options...
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