https://forums.frontier.co.uk/showthread.php/261356-Post-your-Jump-Range
For FSD mods
My +54.8% roll and +4.5% fuel use is
#3 on that list at 71.68Ly (OP hasn't fully updated yet theres a new number 1 just come in yesterday). Number 1 and 2 are better but the exact FSD roll is not known. The best gets 72.32ly.
Using my ship but with a better FSD they'd have to have about 56.2% with the fuel per jump at +4.5% to make that 72.32ly. Without the extra fuel they'd need about 58.8% FSD.
It's possible they have better lightweight mods on particularly sensors as they are a big factor. I've seen +57% FSD but never anything greater so can only assume they've got the fuel use per jump and a slightly better than my 54.8% roll.. I'm also not sure if max fuel use per jump can be greater than +4.5% or not.
As to the OP. A god roll is something that puts you in the top 1% or 2%, maybe even 3% of what is possible for that modification. It's the roll where the stars align and the mod is something you would never think of re-rolling..
Personally I view the whole god-roll thing as silly, I can see the competitive nature for one or two items but trying to get a whole ship or even multiple ships maxxed out is just crazy in my eyes. I'll generally be happy with top 10% of whats possible, usually I'll do a single roll on each of my weapons for what I'm upgrading and then pick the lowest one and try to improve it. Repeat until happy or out of materials.
Not sure on boosters but I'd consider a 56%+ FSD a god roll not to be sold/re-rolled. Thrusters on dirty drive maybe a 40%+ or 39%+. I've only modded 2 thrusters with DD so am not sure really about the difficulty to get in the top levels.
Also I misread this when first arriving as "good roll" not "god roll"
