AVCS issue or knock sensor problem?
Hello people :) i have a 2006 SUBARU legacy, 2.0i gasoline and LPG, approx 260xxx km (167k miles), located in RO, Europe. The engine started to lose torque before 2500 - 3500RPM, randomly. At higher RPM it seems to be working fine. It's gotten so bad that i feel like begging the car to just go. :) No error codes. Here's the weird part. Using TORQUE app from android and a cheap OBD BT dongle, after i clear errors (even if there is none), the engine suddenly behaves as it should, until i go above 3000RPM. Then back to no low-end torque. It happens regardless of the engine running on gasoline or LPG. Also scanned using a VAG cable and FreeSSM. No errors. What i did so far: Using RomRiader and some AI magic, i was able to pull some data out. Please see pics. Did the idle relearn procedure, multiple times, no change. Replaced the PCV valve, no change. Please help? :)