i have a ef with b16 turbo garret t3/t4 with hks bov 2.5 inch dp cast iron manifold with wastegate in the middle waste gate is a knock off tial 38mm, my car has been great for 2months no problems runnin 4 psi spring, then the other day it just started to creep up to 10+psi ive checked everything changed vaucuam line to wg, i took the wastegate apart and the diaphragm had a small tear in it so replaced it with a new one same thing,turbo has no shaft play. i run s300 no boost controller. any ideas im goin crazy
plz help

 

cant figure it out any one

 

nobody with ideas/suggestions

 

any cracks in your mani?

 

no visible cracks that i can see it doesnt sound like theres any leaks either

 

rip in your wg diaphram

 

"waste gate is a knock off tial 38mm" BINGO!!!

 

regardless if its a knockoff it worked great for 2 months no problems, i replaced the diaprham with a new one and it still creeps that high it use to hold 4psi all the way to redline now im gettin boost cut at like 4500 the turbo usally is fully spooled by 3700

 

Maybe your wg just took a ****.

 

are you getting creep? or is the car just overboosting. creep would be if the wg would hold 4psi for a while then slowly creep up to 10psi in upper rpms. in your case it just sounds like the wg is going straight to 10psi. then you are hitting boost cut.

how are your vac lines ran? are they torn/pinched?? are you sure you reassembled the wg properly

 

the vacuum lines are new and dont leak, it was reassembled correctly the valve in the wastegate had play in it re tightened every thing and it was good for bout a day then the problem came back. fml! got tired of this **** happening got a xs power from this kid for 20 bucks **** holds 4 psi all the way to 8200. workin great for now c how long it will last lol

 

Sounds like the diaphram broke again.