My car is going on the Dyno tomorrow - how do i tune it? 1994 / OBD-I

[67Continental]

I am doing 3 pulls on a dyno tomorrow, and I was wondering if there was anyway I could make adjustments between runs to improve hp? It's an OBD-I car, so I am uncertain as to how much I can do. My car, engine wise, is stock, with the air reservoir and silencer removed.

Any Tips?