Yesterday I noticed when I started my car that my Vac was only -13 when usually it is -17. So I started driving to work and once the car got warm I hit it, it only hit 11 instead of 24. It also surges up and down quickly between 6-11 psi

So I turned off my EBC and should of been running wastegate pressure of 11.5psi. I am only seeing 6psi in 5th gear instead of 11-12, no surging, just won't boost.

Now other than a boost leak, which I am going to search for this weekend, any ideas? I know it could be alot of things I am just looking for feedback on what to look at first.

 

I think you are on the right track with a boost leak, look at the hoses on the backside of the intake manifold. They tend to blow off a lot.

 

+1

 

^^^
+1 to boost leak test

also check the couplers for tightness...

 

Good ideas guys all will be checked, also when I installed my EBC I mini zip-tied everything tight. Everything looked good from above, I just have to take out my ARC box and get underneath it and check out the AEM solenoid.

 

+1 on all the boost leaks. I had a plug in my stock intake tube and i raced a sti in oc and i was using the 2 step off the line and the plug blew out of the intake tube i didnt know it. My boost gauge said i was pushing 11psi when i know i was pushing well over 20 that was my prob. Just look over everything real good +1 to all that posted above! good luck let us know what you find.

 

I have a plug in my intake also, ill check it in the morning. Would of never thought of that yet I didn't see it when I looked in.

 

Yeah is urs like a the aluminum plug with a hose clamp around it?

 

I removed it and plugged it off. I'll check it.

 

FOUND IT...Damn animal got me? Took out my boost sensing line and my washer fluid line is missing 8 inches of rubber. The one night I park outside and something chews me up This will be fun going over everything trying to find more damage.

 

Im lucky he didn't go to town on my engine! happens alot over here.

http://images.google.de/imgres?imgur...%3Dde%26sa%3DG