11-12 psi max boost

[super97gst]

ok guys, here's my problem. a couple of weeks ago i got in my gst and it just wouldnt boost over 12 psi max. well maybe 12.3 or 4, anyways, it had been working just fine until this happened. i have done several boost leak tests and cant find anything. ive also done exhaust leak checks and cant find anything.

as far as the turbo goes i am still running the t25. stock wastegate actuator, but i have a greddy profec ebc. i installed it a couple years ago so i know it is installed correctly. it doesnt matter how high i turn the ebc up, it still only pulls to 12 psi. the ebc will turn the boost down though. i replaced my stock turbo with another t25 about 6 months ago, but maybe its going down i dont know.

i did search on this for anyone who wants to say something about it, but i couldnt find exactly my problem. all of my mods are listed in my profile if they are needed. thanks in advance for any help offered.

 

[JohnCIV_Talon]

Do a boost leak test. There should be something on the front page of the website that says, when in doubt, do a boost leak test.

 

[super97gst]

Do a boost leak test. There should be something on the front page of the website that says, when in doubt, do a boost leak test.

as i said above, i already have done several. i will run another tomorrow though. thanks

 

[7"exhaust_tip]

what kind of bov do you have?

Is it leaking?

 

[csgsx23]

Check the actuator and see if it is working properly.

 

[JohnCIV_Talon]

as i said above, i already have done several. i will run another tomorrow though. thanks

I swear to go you didnt have it writtne there when i posted that, my bad though.

 

[Splitpi]

Maybe I'm not reading correctly, but are you running the stock BOV still? That thing leaks past must over stock pressure like screen door on a submarine

 

[MrBoxx]

Check for shaft play. Sometimes when the bearings/seals are going out, the friction keeps the compressor wheel from spinning as fast as it needs to.

 

[ekanddsm]

How is the boost building? When are you getting 12.whatever psi? Maybe cracked turbine housing? Or are you sure your boost controller is working at all? Maybe try a mbc for a few days. EBC's still use a solenoid and they dont last forever.