Having JK 2017 Rubicon, I changed the transfer case to the Sahara version to have higher speed on the 4L

installed and driving fine on 2H and 4H however when i try 4L RPM goes up and it doesn't shift

was told i need to change ratio with AEV Procal

having HP i looked and can only find gearratio and tiresize, is there a way to change Transfercase ratio also ??

I'm using the latest Beta as of yesterday