85 Corvette L98 ARAP $6E Map

Hi all, fairly new to tuning, looking to run $6E on an 85 Cast Head L98 with Bosch 3 22lb injectors. I already know how to disable the EGR, VATS and such, and I'm planning on running the timing tables from my original HLH rom, is there anything else I should do. I'm currently running an ARAR EPROM and having some idle hunting issues on occasion as well some lean issues. Wondering if I can solve them all with the table from my original ECU. I should mention I have bosch 3 22lb injectors, and just recently obtained the offsets for them, if that helps with advice given.