Checked MAF sensor, replaced O2 sensor, replaced plugs and wires, replaced Camshaft Positioning Sensor, running good gas...Car stopped revving over 4100 rpms!
Could it be a Crankshaft Positioning Sensor? Feels like the car's running really rich and smells like it too.
Only mods are a cold-air intake, and WRX catback exhaust.
Any suggestions are greatly appreciated!