What would cause your gauges to bounce everywhere? And your air fuel gauge to go just lines and no #s
Ok this is the deal I was at the track sat. And when I ran on motor I was fine all air fuel right on. When I used my n20 2 stage nos mini. The first stage was fine then when the 2nd stage hit my gauges bouced everywhere then my air fuel went from low10s up to 14 then hit 17 my speedo went from 160 bounce up and down and same as my rpms. I have everything grounded well. Also my battery was showing low voltage. Any ideas im as we speak checking all the wiring. thanks for any imput

 

what do all those systems have in common? are they all on the class II data bus? do they share grounds anywhere. if you were losing voltage, are the battery connections good and tight? alternator connection(which can be a bitch to get to)? if everythings works normal most times, i doubt its a dead short.