My 94 Z28 wasn't running well the other day. Step on the gas and it would just blubber, almost like it was vapor locking or fuel starving. The check engine light came on. Drove it over to my mechanic right away. He hooked up to his computer and took it for a ride. Came back and said the was getting airflow readings that varied from 43 cfm to 80 cfm (not real sure about the unit of measure) at the throttle body. He said the Mass Air Flow Sensor was bad. I had just installed a K&N Filter! Had the same exact thing happen when I installed one on my 2004 Gmc Envoy XUV.. Has anyone else had a MAF Sensor go bad due to K&N oil contamination??