trwebb26 Posted May 23, 2006 Share Posted May 23, 2006 If you have your LC-1 set to output 0-5V at 10-20 AFR... what should your switch point be set at in megatune? 2.35 V makes sense (14.7:1 AFR) to me. What do you think? Quote Link to comment Share on other sites More sharing options...
mobythevan Posted May 24, 2006 Share Posted May 24, 2006 I have the target AFR table turned on so I think the EGO switchpoint in my setup is mute?? Quote Link to comment Share on other sites More sharing options...
280Z28 Posted May 25, 2006 Share Posted May 25, 2006 Go with 15.0. The system ignores (open-loop) that voltage at WOT so you could be 12.5 there, correct? Quote Link to comment Share on other sites More sharing options...
badjuju Posted June 25, 2006 Share Posted June 25, 2006 I'm confused on this post. I was told on msefi to check out autotune, and when i used it it ended up putting my afr around 18 while cruising, which makes me pretty f'n nervous. I'm thinking i have my ego settings wrong, and i'm wondering what to put for them. go with 15.0 for what? what does switch point mean? my lc-1 is set up to run 0-5 volts for .5-1.5 lambda Quote Link to comment Share on other sites More sharing options...
mario_82_ZXT Posted June 25, 2006 Share Posted June 25, 2006 I thought switchpoint was the voltage where lower is either rich or lean and vice versa... Haven't kept up on MS much now... damn car left me stranded today (coil problem... not MS). Mario Quote Link to comment Share on other sites More sharing options...
badjuju Posted June 25, 2006 Share Posted June 25, 2006 i'm calling car protective services... lol can anyone confirm that the switch point is the stoich point? Quote Link to comment Share on other sites More sharing options...
mario_82_ZXT Posted June 26, 2006 Share Posted June 26, 2006 From the MegaManual: " Set the EGO switch point to a value between 0.45-0.50 volts with a narrow band O2 sensor. With a wide-band sensor, set it at 2.50 volts (DIY-WB, others may differ). These values will attempt to give stoichiometric mixtures under closed loop operation. Note that MegaSquirt will convert these values to binary numbers, so when you "fetch" the values back from MegaSquirt, they are converted back and may change slightly." There you go, Mario Quote Link to comment Share on other sites More sharing options...
badjuju Posted June 26, 2006 Share Posted June 26, 2006 I figured out the other half of my problem, der, get this; I had my o2 sensor set to narrow band, which if you will remember, gives the opposite slope. so it was rich, and autotune tried to corerct for it. then at 14.7 it still read it as rich, and it read the o2 as if it was getting more and more rich as it became more lean. holy learning curve. Quote Link to comment Share on other sites More sharing options...
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