I been wondering if i am getting the correct amount of boost for my set up. When i first give it gas the vacuum will drop steadily and then start to make boost around 3000-3500 rpm's. It will barely make 0-1 psi of boost when it shifts into 2nd and starts to go to 2 or 3 psi when it shifts again. I get a peak about 4 to 4 1/2 and that is after 70 mph. Is it making boost even thought it reads vacuum but is approaching boost? I have no other source but here so i am at a loss of what should happen. It is amost impossible to make boost unless i really get on it and go wot or accelerate to high speeds like 60-80.

 

No. Your gauge is reading intake manifiold pressure - real time.


You are only going to see 'boost' at WOT. Everything else is bypassed. That's normal. If you are only seeing 4.5psi, What do you expect to see??

 

well i thought the powerdyne was a 4.5 psi charger with the pulley they come with anyways...

 

exactly 4.5lbs you should see at high rpm when you are wot, not just normally driving the car.