not building boost, am i missing something? Options

[easternpiro1]

Hi all, was wondering if i can get some feedback on something i was missing. here's the story:

recently a friend and I fixed a leak due to stripped thread in the head causing a leak between the exhaust manifold and block.

after rethreading and putting everything back togehter leak is gone BUT now im seeing much lower boost numbers after taking it for a drive.

I own an AEM tru boost controler/gauge and the boost is currently set to stock wastegate pressure (8psi) and consistently held this pressure PRIOR to fixing the exhaust leak.

as of today, my first drive out, my car would not pull past 5psi and touched 6psi BRIEFLY. I double checked my IC piping and adjusted and retightened.

when i went back out the car would only boost up to 4-5 psi adn sometimes as low as 2-3 max.



Im pretty sure its a leak somewhere but it can only be one place as the only IC piping that was removed was the piping coming from the turbo (charge side) i have checked and double checked it.

is there something im missing? any helpful hints would be appreciated! thanks!

[lagos]

Can you take a general picture of your engine bay, intercooler piping, and a close up of the turbo/downpipe/manifold area?

How are you measuring boost? What brand of boost gauge are you using and where is it connected to?

WEIRD o.O im still not satisfied with the consistency of the boost (will only hit 6.5psi instead of high7's) which means the w/g is still open partially but im glad i know exactly what it is, however not the question is how to go about unsticking it (as was stated above)

NO IT DOES NOT!
The difference between 6.5 or 7.5 or whatever is due to the accuracy of the boost gauge, and also the elevation of where you live and the weather temperature outside. Just because the wastegate is said to be set to 7psi from the factory, doesn't mean that you will get EXACTLY 7.0psi.

This post has been edited by lagos: Jun 5, 2012 - 9:58 PM