i just installed an autometer boost gauge and its seems fine but when the engine is off, it doesnt read 0. and vaccum is low too. i have an o3 evo with HKS 280/280 cams. maybe thats why vaccum is low but boost doesnt go back to 0 when engine is off. damn. can anyone help???

 

adjust it back to 0 when engine is off.

 

google is your friend!

from Lightning owners club forums.

"Take the gauge out of the pod and pull the light socket out of the back. Look inside the light socket hole. There is a semi-flat looking large copper tube that winds about 2/3rds the way around the inside of the gauge body. One end of the tube is connected to a boost source and the other end is connected to a gear arrangement.

Anyway.....get in there with a pencil or something and push on that tube and watch the guage face you will see the dial move.
Now with a little bit of messing around you should be able to calibrate you own boost guage. Keep pressing on the tube until the gauge reads "0". AND DONT BREAK ANYTHING"

 

Thats what I did...

 

but its a mechanical gauge. i mess around with it and now it doesnt read pass 15 psi

 

now i dont know if my MBC is off or my gauge is off. this sh#t is pissing me off. should i increase boost to see if it go up??? anyone around new port richey can help me?