I need help :( I am so lost

[Moeglestien]

Just wondering if anyone else has dealt with this issue. My car is a 2002 jdm rev D legacy, Nothing has been changed with car, but when boosting my gauge used to show 1 bar and now it only shows me hitting .5 bar... feels very hesitant and unresponsive to boost and the car shudders past 3500-4000 rpm. I am confused I have tried resetting the ecu and the car is throwing out 0 codes, looked and there are no disconnected hoses and cannot find any leaks

Someone please help me and I have no clue what's going on

[Wiscon_Mark]

Time to visually inspect the turbo. Check it for shaft play, etc. That's where I'd start at least, but I'm not an FI expert by any stretch.

[biocomet127]

if it was a sudden problem I would definitely say you have a leak somewhere.while the car is idling Take either brake clean, carburetor cleaner, or a spray bottle filled with water and spray any vacuum hoses or intake connections between the cylinder head and the mass air flow sensor. also, check the intake plenum and manifold. every connection and hose needs to be checked. If you spray something and it changes the idle of the engine then thats where your leak is.