from what i understand, the voltage reading should be between .7 and .9 - i have the same set-up as you and had so many problems with an iradic idle that i finally took it out due to stalling it at the "wrong moments"...it was a great mod when it was working and when i figure out how to tune it i will put it back in. i played around with trying to get it right about 50 times or so and just got fed up with it...good luck.