need SERIOUS HELP.. BOOST PROBLEM!! PLESE !!

[sl0wboy]

OK, i have this problem in my car , it wont boost over 10psi no matter what .. i had it hooked up with a mbc and it was running good bosting +16psi i lowered the boost to stock level for awhile afraid i was gona break the timing belt and one the one of my friends wanted to race me in his new car i tried to boost it back up and now it will not go over 10 or may be 11 psi, heres what i've tried so far, i replaced the boost controller, cheked the intercoller piping for any leaks and re-tighted them just in case, cheked the bov for leaks, took out the waste gate to test the spring in it seems fine nice and thight and now i have no idea what i could be , any suggestions please ...

 

[TSi Kid]

do a boost leak test
you already checked a few places where it might be leaking but there are more out there
you'd be surprised where you could have a leak

on a side note
damn your up late for living in az

 

[YeahRight564]

Could check the breather hole on your MBC if it has one.

 

[DSM-sagacious]

+1 on the boost leak test. You should also check for an exhaust leak. Tighten up your turbo bolts and look for cracks in the manifold. A small exhaust leak will cause low/late boost

 

[crazyquik22023]

check for a leak in the vacuum line on ## bov... make sure its hooked up to the intake manifold or w/e you are getting vacuum from all the way and there is no leaks in that hose and check to make sure ## bov is not leaking if either is your car will not boost past 10psi

 

[95blackGsTurbo]

Your best bet will be the boost leak test. You will need to make yourself a tester and do it properly to find all of the leaks.
IC Pipe Tester

 

[sl0wboy]

do a boost leak test
you already checked a few places where it might be leaking but there are more out there
you'd be surprised where you could have a leak

on a side note
damn your up late for living in az

.... i would also think it could be a leak but i was thinking if it was a leak the boost would most likely go up alitle and then down or something like that, but no it shows in the gauge it just goes straight around 10 then just stops there , another thing is that i dont have the right tools to do the test , im trying to do the best i can before i can take it to a performance shop.. thanks for all the replys

+1 on the boost leak test. You should also check for an exhaust leak. Tighten up your turbo bolts and look for cracks in the manifold. A small exhaust leak will cause low/late boost

when u talking about the exhaust leak thats only the manifold rite and turbo bolts and stuff rite ?? ..