skyactivr

2nd gear pull: 8psi from 2-3k up to 5ish then tails off to about 2 or 3psi
Change to 3rd: No boost.
Let off the throttle for a second in 3rd then WOT again: 8psi from 2-3k to about 4.5k then nothing

Anyone know anything specific before I rip into vacuums and solenoids.

Thanks

FührerTüner

iTrader: (5)

Sounds charge control valve related.

skyactivr

Thank you. Maybe I will start here.
Forgot to mention completely stock JDM car apart from catback.

DaleClark

iTrader: (55)

Go through the sequential troubleshooting. Start with boost leaks.

Dale

FührerTüner

iTrader: (5)

This too. Make one of these:

dfwrx7

Forgive my ignorance but what is that and how is it used? I don't think I remember seeing that back when I had my stock-ish TT FD.

FührerTüner

iTrader: (5)

Its a boost leak checker. Google.

skyactivr

Thanks guys.

Was looking for a 'X is your problem, do this and your life will be sorted' sort of answer :P

Bought the car recently and just didn't want to rip it apart while the summer was still here but I think I'll dig in. Arguably better than standing around looking at it being all pretty on the driveway.

pd_day

iTrader: (6)

Make sure the lines to the vacuum chamber and the chamber itself is good.

skyactivr

Ok. I don't want to stretch my begging much more but the vacuum chamber - am I correct in thinking this is the little black box directly in front of the upper intake manifold? Thanks
EDIT: I just realised that's the pressure chamber.

FührerTüner

iTrader: (5)

Just do a damn boost leak check first.