ATS*Mark

sup guys ....just wondering what would cause boosting over your target boost....would vacuum lines colapsing cause this??? im still trying to figure out why my avcr wont control my boost......perhaps me running open downpipe?

Ri5e

What turbo manifold are you running? Where is the wastegate flange located?

ATS*Mark

its the stock greddy manifold , and the wastegate is internal.

Lucky_Smurf

What pressure source are you using for the boost controller? Off the turbine or off the manifold?

ATS*Mark

the pressure sensor is Teed into the FPR as per the instructions

kpt4321

What do you mean by "overboosting?"

How much boost over your set limit? When? How fast?

ATS*Mark

i set it to like .65 as my target boost . and it will go right past it like theres no target boost . ill do it in third gear and i cant get WOT because it will boost to like 15 lbs

JonnyCoupe

Vacc lines wont colapse under boost!

Check the hose to the actuator is clear, then try compressed air into the line and see what pressure the actuator opens the internal wastegate at, i could be that the actuator has too much preload.

HTH
Jonny

ATS*Mark

prelode?

JonnyCoupe

yeah you rotate the thread actuator rod, and this preloads teh spring, you could be making the preload so much thatthe wastage cant open fully to expecl excss air at the full acturor travel, fine at lower revs but as the revs increase and mmore gases passes through engine and hence exhuast not as much can bypass the turbine thorugh the wastegate and hence you get boost creep over the set limit.

ATS*Mark

but its at the stock boost setting i dont see how it could have too much preload....