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Random boost spikes???

1.2K views 6 replies 3 participants last post by  AuzzyP  
#1 ·
I just bought my 2002 WRX a few months ago and now I've been having random boost spikes. It doesnt happen in first or second gear but when I try to give er some juice in any higher gear my boost will suddenly spike up and come back down before going back to normal. Even if I have cruise control set this still happens if I'm going up a steep enough hill. I'm not a mechanic but my internet diagnoses is that this must have something to do with my boost controller or solenoid? Any help and advice please!
 
#2 ·
Does the car have any mods to it?
 
#4 ·
My first two suspicions:
ECU calibration issue
Leak in vacuum lines from boost controller
 
#6 ·
AuzzyP said:
How would I go about testing/ fixing that? I'm new to this turbo'd car game
1) Pull the ECU calibration currently on the car and look at it
2) Pressure/smoke test