You might consider swapping out your K&N, they let more junk by, including air, than other filter types. I actually have a K&N on my 85 with weber carb (not sure what to replace the filter with), had one on my 00 Camaro but won't put one on the new truck.
A friend on mine actually had a transmission problem that the dealer said resulted from his K&N, I guess the extra junk caused some senser in the intake to quit working, sounds fishy, but if you read the reports on them you will find out that people have proved doing tests on engine oil that more gets through.
Just don't run one blindly, make specific choice based upon research. I don't think that they are worth the small performance gain, there are other options that are good as well.
