I was running VAFC + 370cc Drag turbo.
Anyways, while running for a test drive my boost guauge stop at 4psi and it start to sputter, boost could not go any further. I currently had a turbonetic delta wastegate.

1) Is this cause by the stupid turbonetic wastegate?? My wastegate is 7psi and It no where I think that what cause this problem.
2) could it be a boost leak? Well I check all my pipe but nothing wrong..

Any help appreciated...thanks
Should I upgrade to Tial wastegate?? heard lots of good thing about Tial...

 

do you have a fmic? its boost drop from the ic and your probaly leaking boost

 

i have a 7psi spring in mine and it boost no more than 6psi. i know mine has a leak on my manifold flange. its a leak for sure. check the manifold to head, and turbo flange to manifold.

 

my deltagate wg busted open on me 3 weeks ago...thought i fixed it and took it to the tracks and the center shaft busted in two!! i was shooting out of the fully open wg down the track!! POS deltagate!!