my mods. intake.dp.cb. im spiking to .89kg/cm2 what could cause this? usually the prob is a boost leak but i dont get it.ive checked the line with the pill in it from the w/g thats fine. i even threw in a manual boost controller and had the boost turned all the way down. still gettin high boost n e ideas??

Did it all of the sudden start happening?



Did you add mods?



Did the weather get cold?



Maybe you blew out the cat?

its just started happening like a month ago but i didnt drive it for a while. had all the same mods for a while it got a little colder but the boost doesnt settle. ive seen 15psi then im off the throttle

Well, cold weather WILL do it... I'm suprised you don't see fuel cut @ 15psi

it overboosted when it was warm as well...

.9 is ~ 13-14 psi.

1. is 15 psi right?

maybe the wastegate is stuck closed???or a solenoid went bad??

your thinking one BAR.



1 kg/cm^2 = 14.something PSI

Put in a cheapie manual boost controller (needle valve) and see if you can get it under controll. If I remember right it only costs about $10.00. The problem might be the wastegate..If it is having trouble flowing much more than 10-12 psi then it will have a much greater tendency to spike, especially with your mods. If the valve dosent work you might want to port the WG...may sound extreme but it will not hurt.