[KRatcliff]

It is a personal preference, but I don't want the ECU correcting the tune on my cars going down track. Some do like it this way, but I don't at all.

The A/F ratio you would want to target is somewhat dependent on the fuel you are using and sometimes the current O2 sensor in the car. They all seem to read a little differently. For example I run VP C11 and my car seems to like the 12.8 range.

You could be anywhere between 11 and 14 on a pass and I don't think you will hurt the car due to the limited time you are going down track. I doubt you are that far off in the first place since it was running at other tracks. You are probably pretty rich. I would put it in open loop and log it then target somewhere in the 12.8 to 13.0 range. The car will tell you what it likes on the time slip (or time slip app).

You may be able to get it to where all you do is adjust fuel pressure depending on the track. I would start with my fuel pressure at 52 lbs or so with a 4,000' DA. That should give you some room to drop it if needed on a worse DA. I don't like to run less than 50 lbs of fuel pressure.