Lugging? Can I get your Diagnosis...
I have an 04 Wrex wagon. No engine upgrades accept for a panel K&N filter.
For a while now I have experienced lugging when starting from 1st gear at any RPM under 2k. I change oil and filter every 3k with mobile 1, I replaced the plugs,fuel filter, and tranny oil with no effect. Could this be a symptom of the car running lean do to increased air from the filter or a bad O2 sensor? Or is this just the result of an low torque down low?
I would appreciate any suggestions.