Well I hooked up my boost gauge last night. When I rev the engine the gauge goes to the vac side instead of the pressure side. It's a mechanical gauge with the hose and the light power wires. I taped into the vacuum line comming off of the throttle body. Is that the wrong spot to get a reading? If so would the tap be better off of the tree in the back of the manifold? Thanks for the help.
#55067, "RE: vacuum gauge reading wrong?" In response to Reply # 0
generally your not gonna see any boost while just revving....should be able to get it to hit dead zero but thats about it...if i rev my to 7,000rpms i can read about 1psi...but thats on a good day...
#55068, "RE: vacuum gauge reading wrong?" In response to Reply # 1
Correct. Unless you use a really small turbo, you're not going to see boost free revving the motor.
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