In scripts/lib/galaxy.lua, this function:
function Balancing_GetTechLevel(x, y)
-- this is just a number indicating how strong the tech of the object is
-- ranges from 0 to ... lots
local coords = vec2(x, y)
local dist = math.floor(length(coords))
local tech = lerp(dist, 0, 500, 52, 1)
return math.floor(tech + 0.5)
end
If you only change the 52 to something higher, it will increase the cap, but also increase the tech level of every other sector. You'll also probably want to mess with Balancing_GetSectorWeaponDPS because tech level doesn't actually seem to have anything to do with weapon damage. That stuff will change all weapons though, I don't know how you'd make specific wrecks drop better items than anything else.