| Message | A narrow band to tell if it's rich or lean, an oxygen sensor for lean (excess oxygen) and a fuel sensor for rich. (excess fuel) It could be used to account for the mixture changes caused by E85, but that's not the best way to go about it. Better/more efficient to tell the ECU what it's getting instead of making it react and compensate. 
-Dan 
  "Capitalization is the difference between helping your Uncle Jack off a horse, and helping your uncle jack off a horse." "'she' also likes to swap since I think I am going to need to give her to woody again." - Dvlhntr
 "full alphabetic boost mode" -
 ChristopherTheOne
 " Purrs like a sexually satisfied black panther." - BigTDogg
 "Two oil eating, angry, spinning triangles of death." - turtleboy on rotary engines
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