I just installed an Auto-Meter boost gauge for a Vortech SC. It reads aroun d 25 vacuum at idle, and when I punch it I can only get the guage up to 0? Whats goin on?

 

I didnt really floor it b/c Im breaking in my new tranny, but I gave it a good push.

 

your prolly still in vacuum if your just partial throttling it. I remember when i had my vortech it wouldnt boost hard until you had it floored, all the way up to 12 psi

 

SC is Rpm based so all you need to do is rev it out; even in partial throttle. What have you reved it to?

 

I was at 4,500-5,000 id say. I just put in a brand new tranny so I didnt want to beat on it until i break it in for about 1000 miles.

 

but I also tried reving it out in (n) and got nothing

 

will it just fly up to 8psi which I believe im at instantly? In other words hold hold hold boost. Like so fast that you would miss it ina split second? Or does it gradually build up like you could watch it 1,2,3......8psi?

 

Under partial throttle the bypass valve will vent the boost no matter what Rpm you are at. You need to put load on the engine while accelerating and you will see the boost increase pretty quickly around 3500 rpms to redline. Its difficult to keep your eyes on the rpms, road, and boost gauge at the same time though.

 

If this is the electronic version, not mechanical, to operate properly the Autometer boost gauge must have the red + power hooked to a switched power source that maintains power during engine cranking. If you have it hooked to an accessory power source that breaks during cranking, it cannot do the auto zero calibration. I had that problem when my gauge was installed, switching the power source to one that maintained power during cranking fixed it. Hope this helps.

 

you need to be in gear and driving. The engine needs a load against it to "make boost."

 

nothing is going on, because you're expecting the s/c to act like a turbo!

 

the guage was broken bought a new one problem solved