WRX No Boost

Learner Driver
Posts: 1
Joined: Sat Apr 29, 2017 4:29 pm

WRX No Boost

Postby wrx06 » Sat Apr 29, 2017 4:32 pm

Hi guys, I have a 2006 WRX and the car decided not to boost anymore .

Driving normally one minute spooling fine, next second there's no boost.


3" Catback

I've replaced the following bits and didn't fix the issue.

Installed stock BPV
Replaced Y-Pipe
Checked C-Clip

Car isn't showing any CEL's, I did a fault code scan and showed 0 engine codes only 'Front ABS Sensor'

I did some data logging and the max boost I was hitting was 4.9 PSI.

Car hesitates a just before hitting boost.

Also the car does make a chain like noise at low rpms, when starting off or at low rpms. (Has been happening for a while, still boosted fine)

I should also note, the car was boosting before I changed the tmic and stock bpv. About a week later it started to not boost, however the weird thing is the GFB BOV works when the car is idle and revved out (it's quite loud) but when driving it doesn't work.

Any help would be greatly appreciated.

Probationary Driver
Posts: 52
Joined: Sat Jul 04, 2015 4:39 pm

Re: WRX No Boost

Postby surge » Sun May 07, 2017 7:08 pm

Did you have the car tuned for those mods?

I'm guessing that you have not and that has caused some pinging and so the ECU has dropped the IAM. Might need to get someone with learningview to check the car.

Learner Driver
Posts: 16
Joined: Sun Oct 23, 2016 4:27 pm

Re: WRX No Boost

Postby higginz92 » Tue May 09, 2017 5:31 pm

So the turbo isn't getting any pressure? Check for any leaks man, the hose from the intercooler to manifold leaks as a common thing.

Any turbo action at all?

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