My boost is too strong! Is there a fix?


Similar Questions:
My boost won't stay where I set it - it keeps going up! Is there a fix?

This is called boost creep, and occurs when the turbo is pushing so much air that the wastegate, even when fully open, cannot dump all of the intake pressure.  This results in a continual increase in intake pressure, and is common with upgraded turbos, especially with upgradeddownpipes - the exhaust would rather flow through the turbo/exhaust than the more restrictive wastegate, which spins the turbo ever faster.  Cars with this problem can develop mind-blowing (and engine-blowing) intake pressures in a hurry.

The general solution to this problem is to port the oxygen sensor housing, turbine housing and/or wastegate to allow them to dump more air.  Otherwise minor malfunctions of the wastegate may also exhibit themselves as boost creep, such as poor travel on the wategate actuator arm.  Some people use an external wastegate for better pressure control.

Check out Tom Stangl's - O2 Housing Porting vfaq. (archived PDF)

People interested in more theory behind this problem will enjoy Dennis Grant's Turbo Fundamentals Series.

QA #199

Last Updated:
2016-11-28 07:27


Cam Dorland | 95 Eagle Talon
  FAQ CHECKERS NEEDED
  WANT TO HELP?

We need help managing, fixing finding content. If you are experienced with DSMs and have great writting skills, please send us an email.

 
0
Registered
  Register your DSM
WE ECMLINKV3
  STATUS MAP
  CONTENT CHANGE MAP

BE SOCIAL

Follow us on facebook and twitter

READ OUR ARTICLES

Coming Soon

Copyright DSMFAQ (Chuck Lavoie) / 1000AAQ (Sean Costall) 1989 - 2020
Site seen by 683941 visitors