What is FTL engine speed good for?
In "Faster Than Light" each upgrade of the ship's engine increases dodge factor, but also it increases you FTL speed, which starts at 1 and goes up to 2.75.
What is FTL engine speed good for?
Solution 1:
It's not your FTL speed, but the rate your FTL charges at while in combat.
http://ftlwiki.com/wiki/Systems#Engines
Upgrading improves dodge chance and the rate that your FTL drive charges
Faster charging is useful when you want to get out of a sector sooner without fighting.