I have a 1995 Ford Cobra (331, vortech supercharger, Anderson Ford piping with Pro-M Airflow meter, etc). The internals I don't know a lot about because the previous owner I bought it from this past fall was Polish and new little English but had the money to get this car built up big time. Anyway, I changed the oil two weeks ago with Joe Gibbs Drive 5w/30 and K&N oil filter. I go to my buddies house for a surprise part and I was surprised instead from oil spot underneath the air filter (behind the splash guard) on the ground. I thought maybe I put too much oil, but I didn't after checking the dip stick. The car ran fine but now all of a sudden I am getting oil through the breather tube that is tied into the supercharger piping where it receives the air after the air filter. Now I take it out today and it is running like butt. Spitting stuttering and sound like misfiring after 2000 RPM. It idles fine at first, but after it gets warm it barely idles. And it still left oil behind after I put it back into the garage. Do you think this oil issue has the MAF all dirty? But at the same time the MAF is getting air from a small area that is isolated from the rest of the Anderson Ford piping. My friend owns his own mechanic shop but is in Vegas for the weekend. I am just trying to wrap my head around this. It happened all of a sudden after an oil change...that is why I am concerned. Thank you in advance!