so ive got 2 autometer guages and im trying to figure out why one would be so far off. with my pro comp ultra lite boost/vac guage i get a peak boost of 22-23psi. with my phantom boost guage with no vac, i get 28-29psi peak.. all i have for mods is the apexi power intake filter.
obviously the pro comp is correct, just curious though

any ideas on why this is happening? could the spring be junk in the phanton guage?

 

i have an autometer and its broke also, only reads to 17psi and when the cars off it doesnt rest at 0. i think its a common thing with these. ppl have told me to call them and see what they say but i havnt done anything yet

 

yea when i shut the car off it rests at 6psi also

 

stewart warner makes some nice gauges that I personally use as well as a few buddies and have had nothing but great results

42draftdesigns.com

they are a vendor here that carries them...you will not be disappointed for the price and quality

 

Autometer are generally not quality gauges

 

yea i figured that but i didnt have a guage or pod and got them both for a really good deal so i figured its better than nothing

 

if a boost gauge with vacuum in it does not sit at zero (0) when the car is turned off the gauge is broken. A vacuum/boost guage must rest at zero (0) when the car is off in order to it to read correctly

hence: prosport gauge 22psi
autometer 28psi

22+6=28

autometer is broke

 

yea i understand that but my boost/vac guage sits at 0 when car is off. with my non vacuum guage it sits at 6 psi when the car is off