Window switch RPM reading wrong

Discussion in '96-04 - 2V Specific' started by GT3FC, Mar 23, 2014.

  1. GT3FC

    GT3FC Active Member

    Messages:
    443
    Likes Received:
    0
    Joined:
    Jun 28, 2013
    Location:
    Phoenix, Arizona
    I wired up my window switch for my nitrous system tonight. When all was said and done I was getting an incorrect RPM reading on the window switch...Its a Summit racing switch...the car is an 02 GT and I used the red/white wire off of coil #8 for my tach signal...anyone have any ideas?
     
  2. Wichers123

    Wichers123 Well-Known Member

    Messages:
    1,203
    Likes Received:
    0
    Joined:
    Apr 21, 2013
    Location:
    Covington, louisiana
    Wouldn't you want #1 as that's the base for the rest of the cylinders?
     
  3. GT3FC

    GT3FC Active Member

    Messages:
    443
    Likes Received:
    0
    Joined:
    Jun 28, 2013
    Location:
    Phoenix, Arizona
    well everything I could find said to use cyl#8 for the cleanest tach signal...but I was told last night that I will not be able to get a clean tach signal from a car with multiple coil packs with out a converter....