Weird Boost Issue

[talon2gbuyer]

Hey all, so I did some replacing the other day and replaced a vacuum hose that ran from my MBC to my lower IC pipe. That night the car ran 15psi up to redline and everything worked great. Yesterday on my way back home I ran it again and it held 15psi up till about 5500-6000 RPM and then suddenly dropped to 10psi. I am pretty sure there a term for this, but just not sure what it is? it didnt feel like fuel cut off, so i really dont know where to go from here. Ideas?

 

[liquidsilver]

The first thing anyone is going to ask is if you did a boost leak test. Might have lost a zip tie or something...

 

[talon2gbuyer]

duh... yea ill run one. I have to get the parts to build one first.

 

[Rikolas]

The first thing anyone is going to ask is if you did a boost leak test. Might have lost a zip tie or something...

Nailed it.

Also Sounds like a boost leak to me. Make sure everything is secured.