the volts need to be somewere in the nature of .996-.999
I've actually heard that the range is ALOT bigger than that...But that is what people like to have it at.
this is true.
0.49-1.2 volts is the range that the ECM expects and to be safe i like to keep it anywhere from .75-1.0. ANYWHERE in this range will produce exactly the same performance. the .999999 volt tps myth has been busted a long time now. check the info here where it says "Mythology Case #1": http://www.my5oh.com/forum/viewtopic.php?t=70