yesterday saw two different kind boost gauage
both made by autometer...showing 30 in/g vaccume and 30 pis boost...
but one of them has the needle rested at 30ing vaccume and the other one rested at 0..
where are the different?....

 

You sure they both measured vacuum? Maybe thats just how Autometer sets up one of their guages.

 

Mine rests at 0. dunno.

 

don't buy one that is not set at 0.
i have seen ones that have been dropped that are not correct.

some boost gauges don't have vacuum and just have boost on one side. i would go with the 30/30 one you saw.

I have a vdo one from summit racing for $27.95
http://store.summitracing.com/partde...=VDO%2D150063D

 

dude but u know what i think they made it liek that because they have different part no.
the one i mention is 4777:
http://www.autometer.com/hp/2003_cat..._art/4777.html
OH U KNOW WHAT just took a clear look i think it has memory and cos $2xx!!!? um...um..

 

they wouldn't show a fucked up one tryin to sell them lol
it probably just rests at 30 vacuum istead of the normal 0/0

 

I bought one that was an autometer ultra-lite series. You could chose from two.... Both had the 30psi Vac, and one had 20 psi boost and one had 30.

I went with the 20psi boost max becaue I wont be hitting that and the numbers are larger and easier to read. Hope that helps

 

The reason it's not at 0 is because it's an electric gauge and not mechanical. That particular guage has a memory and also a warning feature.
Do not buy a mechanical gauge that is not set at 0.

 

hey its fun to think you're running 30 psi instead of 5 with those mechanical ones that aren't set right