Hooked up gauge have vac but no boost.Can someone give some input please.

 

Are you driving the car or just giving it gas in the driveway. The latter will not produce boost.

 

I am driving the car

 

What rpm are you getting up to? Is your belt tight? Are you sure your not leaking boost anywhere? Did you forget to take the plastic bag off the air filter ( I did this one what an idiot)?

 

Im going up to 6000.No boost.Car seems to scream.What vac source should i run the gauge from.

 

I hope your not running the car to 6k without it being tuned. That wouldn't be too bright. What vac source is the boost gauge using now?

 

I had bob @ epp tune it.Im taking it from pass side by computer .

 

pass side by the computer? what the little 3/16 or whatever size line it is coming off the back of the intake for the ac controls? if so, did you splice infront of the inline check valve or behind? behind wont yeild boost due to the checkvalve.

 

Where else should i take it from.

 

you didn't answer the question. but you could also use the brake booster line

 

After the valve.

 

Tap into the vac hose going to the brake master cylinder...That's the easiest place to do it...Also is the bov staying open???

 

Dont know .

 

There is your problem right there. You need to move your splice spot to before that checkvalve. Otherwise, the gauge won't be able to reference boost, hence why you aren't seeing any.

 

Let us know if that takes care of the problem. Bob

 

That was the problem thanks.

 

Glad to help.....now post a vid.

 

Are you talking about a one way valve or something, that stops boost from getting into the booster??

Is there really any need for a boost gauge? just curious?

 

he's talking about the HVAC check valve. if the valve is bad or missing your heater blend doors will move(floor to defrost) as vacuum changes

 

Thanks Badair, Gees there are a few things to be aware of when going to a blown set up, arent there..