NateZ Posted December 30, 2004 Report Share Posted December 30, 2004 Lower O2 readings usuing hptuner's scanner mean the engine is running richer or leaner? Thanks, Nate Link to comment Share on other sites More sharing options...
SSBeaumont Posted December 30, 2004 Report Share Posted December 30, 2004 When the O2 voltage is : low = leaner 0-.50 High = Richer .50-1.0 ECM responds with an opposite command(unless WOT) hope that helps! Link to comment Share on other sites More sharing options...
BenKey Posted December 30, 2004 Report Share Posted December 30, 2004 What are your O2s reading? Link to comment Share on other sites More sharing options...
NateZ Posted December 30, 2004 Author Report Share Posted December 30, 2004 at WOT - it was between 880 and 895 on both banks. Nate Link to comment Share on other sites More sharing options...
BenKey Posted December 30, 2004 Report Share Posted December 30, 2004 Sounds a little lean for FI. Others will correct me if I'm wrong, but you should be optimally in the 915-920 range. Unless you have been finely tuned with a wideband. Going lean under WOT with boost is disaster waiting to happen, so watch it. Link to comment Share on other sites More sharing options...
zippy Posted December 30, 2004 Report Share Posted December 30, 2004 i agree. if you're tuning with the stock O2's, 870-890 is great for N/A. for forced induction, i recomend from 900-930 for a goal. Link to comment Share on other sites More sharing options...
NateZ Posted December 30, 2004 Author Report Share Posted December 30, 2004 Ok thanks guys, brian is workin on it for me, i just wanted to better understand what i was lookin at in my logs that i sent to him. Nate Link to comment Share on other sites More sharing options...
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