By the way, something I just thought of:
BEFORE I changed the EGR Valve I was getting the P0401 and P0402 Codes, along with some O2 Sensor code, can't remember which one. AFTER I changed the EGR Valve, and BEFORE I cleaned the passages it was not throwing the P0402 (EGR Excessive) anymore. After I cleaned the TB and passages it started throwing the P0402 code again.
