Overboost Issues

[Finny]

Hi guys,

I have been getting over boost issues lately and I assumed it was leaking vacume hose to the actuator but I replaced all the hoses and removed my boost controller so it should run 5-7psi and it is still over boosting. The actuator doesn't seem to be leaking and the wastegate moves freely when I diconnect the actuator.

The car hits 5psi and holds that untill about 4000rpm then it peaks all the way to 18psi.

Any one have any ideas?

car mods listed bellow...

[ZILR-34]

check the overboost value on the rear of the intake mani

[InterCooL]

if its overboosting then there has to be a restriction in the wastegate blocking air flow. if the flapper seems to move freely then the only thing i can think of is to swap an actuator over and see if yours is the cause.

(i'm assuming you have removed the stock boost controller)

if that doesnt narrow it down, you may have to have a look inside and see whats going on.. = dirty and time consuming!!

[SevenAngryPenguins]

I had overboosting issues after fitting a split dump did the whole boost creep thing as the revs built