Gonna get right to it. Built motor 8.8-1 plus vortech v2 walbro 250, 600cc injectors and tuned with uprev. Runs like a damn dream till about 5400rpm, when my air fuel decides to dip into the tens. Fuel compensation map is set mid elevens but chooses to dip regardless. I'd like to lean it out.... What am I missing??

 

You should work on your MAF table first. Then (if needed) fuel compensation.

 

This.

 

MAF table is perfect, idles great, runs fantastic. Just likes to run rich at higher rpms regardless of my table

 

You need to set you fuel compensation table to 100.Then fix your MAF table. If your running rich then your maf table is to high at those RPMS.

 

You're airflow is exceeding the factory MAF's electronic range. You need to adjust the MAF tables to allow a greater range of airflow.