vf10/Vj11 hybrid problem no boost

[yoyo28gsi]

yep i have connect the mbc between the hose from the turbo and the wastegate actuator

[FE3-323]

your pressure source should be from the intake manifold not off the turbo
don't know if that'll make any change, but its more accurate & provides vacum aiding the wastegate to hold shut

[yoyo28gsi]

that same pressure in compressor of turbo than on manifold ? it pick on hose that go to the turbo on the boost pipe ...

[yoyo28gsi]

and before with the VJ11 i pick at the same place and it's was working at 21 psi

[FE3-323]

the manifold is as close to accurate pressure which the motor see's.
takes pressure loss out of the equation as well as assisting in sealing the wastegate when not in positive pressure. Its the IDEAL way.

[yoyo28gsi]

does it better to fit it before or after the throttle body so ?
seriously no doubt it better but i'm pretty sure that not the problem
i will have it more pressure with my mbc , or without any hose connected to the wastegate actuator
but one thing i don't understand the vacuum don't help to hold the flap closed but help to open it at a certain pressure ?

[FE3-323]

after the TB. anything before the TB is in constant pressure/zero atmosphere

[yoyo28gsi]

without boost pressure yes but not under boost

[yoyo28gsi]

hi
i have change the turbine housing by a vj14
i have put a little more precontraint on the actuator
it still take 10 psi only with the manual boost controller set to max boost...
the car take only 10 psi i can go more ...
there are some missfire problem too
can a bad ignition can limit the boost level ?

[yoyo28gsi]

Hi
i have just put new sparkgs plugs
i have found a boost leak on a turbo hose, i have change it
now the car don't missfire but take only 12 psi ...
i thinks i need a vacuum tester and timing the ingition and it will good.
Now i can feel power come back

[yoyo28gsi]

help please i change my weak boost hose now i have 12 psi i can't go more i want my 18 psi come back

[MazdaNoob]

disconnect the exhaust after the downpipe and see if all of a sudden it boosts better . maybe there is a restriction in the exhaust ( bad cat)

[yoyo28gsi]

i don't have cat
i have put a wastegate spring helper now i have 13/14 psi but still cant reach the 18 psi
i thinks the actuator is dead what u thinks