a dyno run gives you a basic tune up. but weather changes. my best sugestion is tune the car on the dyno and take a thermometer with you to get the temp reading in the shop. This is a base reading. Go to the track and run your car. turn the car off at the end of the run and coast intot he return lane and rad yoru plugs, see if your rich or lean or just right. Take the temp right before the run. Log your readings in some kind of binder statign the temp and the size jets used and if it was lean, rich or just right, also your MPH and e.t. do this in the return lane. My track hates it when I read my plug there but oh well. get back to the pits quickly and read the temp again if it is the same then go up a jet size to see if it makes it rich. get back in line and make another pass. Read the temp again right before the pass and log as before. seems liek a lot of work? it is, but it is a small price for being competetive. It all depends on how serious yuo want to get. I could tell you all the info on my jettign at what temps and what elevation, but it is different with each car. you should see what we log on our altered fuel car each pass. It takes a person just to do that on our 5 man pit crew.
Mark Thompson PSCA Mustang Maddness 37
84 Mustang GT, 408 super Vic intake, high port heads, pro system 1000cfm carb, inductions solutions sledge hammer nitrous system, glide. Full TeamZ suspension.