thunderhorse

I recently bought a used mechanical sport comp vaccuum/boost gauge, and it reads 1 psi when it's just sitting on a table, not hooked up to anything. Is there a way to zero the gauge, or should I just let it be by subtracting 1psi to see my boost rating?

luckythirteen13

im not sure to be honest but i would call autometer and ask them. dont tell them you bought it used, just tell them about the issue it has and see what they say